C++ jobs in crypto and blockchain companies

Cribl does differently.  What does that mean? It means we are a serious company that doesn’t take itself too seriously; and we’re looking for people who love to get stuff done, and laugh a bit along the way. We’re growing rapidly - looking for collaborative, curious, and motivated team members who are passionate about putting customers first. As a remote-first company we believe in empowering our employees to do their best work, wherever they are.  As the data engine for IT and Security many of the biggest names in the most demanding industries trust Cribl to solve their most pressing data needs. Ready to do the best work of your career? Join the herd and unlock your opportunity.Why you’ll love this role: Cribl Inc is looking for a Product Security Engineer with an AWS security background to join our mission to unlock the value of all machine data. Cribl provides users a new level of observability, intelligence and control over their real-time data. You will join a team of security engineers who are committed to shipping secure software and enjoying all the goat gifs the internet has to offer. This role is remote and you will report into the engineering organization where you will be responsible for both identifying security risks as well as ensuring mitigation across all Cribl products in the Cloud and on premise. The Product Security Engineers in this role will engage with development and operations teams across the Cribl products to enable and drive them to follow secure development best practices, making sure security is built into every product we ship. Our software is deployed in some of the largest organizations in the world processing 100s of TB to PB of IT & Security data.   As An Active Member Of Our Team, You Will... Evaluate results from Cribl’s Cloud Security Posture Management (CSPM), perform root cause analysis on AWS misconfigurations, and educate engineering teams on secure AWS patterns Perform application security assessments including AWS architecture review, threat modeling, secure code review, and general security consulting.  Assist and enable product teams to follow secure development practices, while also empowering them to own security within their product area.  Have a proven development background and can communicate with engineering teams with authority, credibility, and empathy. Product Security is complex and context-specific and, as such, will require you to learn constantly and be committed to continuous innovation, because what worked yesterday may not work tomorrow. Consult with development and operations teams to provide guidance and recommend secure design patterns Perform security assessments on new and existing products and services to identify security risks and establish baseline security requirements Establish and drive security standards across Cribl to improve security and resiliency of software and systems architecture   If You Got It, We Want It Experience in software development or product security engineering, with additional full-time product or information security experience Proven experience performing security design reviews for complex applications, including distributed systems, APIs, and services deployed to cloud, on-premise, and hybrid environments Expert knowledge and implementation experience across information security disciplines, including web application, network, and operating systems security Fluency with the OWASP Top 10 and other common vulnerabilities and exploit techniques, and ability to define appropriate countermeasures Deep understanding of common application and network protocols, cryptographic technologies, and authentication and authorization protocols Knowledge of compliance requirements for industry-standard certifications like PCI DSS, SOC2, HIPAA, FedRAMP Direct experience supporting cloud operational models, including SaaS security architecture, microservices, containers, and/or Kubernetes BA/BS in computer science, a related discipline, or equivalent work experience   Preferred Qualifications Contributions to the security community: research papers, public CVEs, conference talks, open source, etc. Extensive automation and development experience in programming languages such as: C++, JavaScript/TypeScript, Python, Go Familiarity with “big data” and distributed systems technology OSCP or related security credentials   #LI-MV1 #LI-Remote  Bring Your Whole SelfDiversity drives innovation, enables better decisions to support our customers, and inspires change for the better. We’re building a culture where differences are valued and welcomed, and we work together to bring out the best in each other. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or any other applicable legally protected characteristics in the location in which the candidate is applying. Interested in joining the Cribl herd? Learn more about the smartest, funniest, most passionate goats you’ll ever meet at cribl.io/about-us. 

Jito Labs is architecting the future of high-performance distributed systems on Solana. We're the team behind Jito-Solana, the leading MEV Solana client, and the Jito Block Engine, which has revolutionized block building on Solana. Today, Jito-Solana currently runs on 88% of stake and 1,100 validators, producing an additional $370M of revenue for stakers and validators on the network.At Jito Labs, you'll work alongside a small, nimble group of engineers and operators who are passionate about solving complex technical challenges at the cutting edge of Solana trading and infrastructure. As a small, profitable company with product-market-fit, we're in a unique position to tackle ambitious technical challenges while maintaining our startup speed. Our team culture emphasizes:- High ownership: Every team member drives significant technical decisions and shapes our product roadmap.- Fast execution: We ship rapidly and iterate based on real-world feedback. Progress, not motion.- Technical excellence: We tackle complex problems with elegant, scalable solutions.- Sustainable growth: Strong financials and proven market fit enable us to focus on long-term impact.If you're excited about:- Solving complex distributed systems challenges- Working with cutting-edge MEV and trading infrastructure- Contributing to open-source blockchain technology- Making a tangible impact on one of the fastest-growing L1 blockchains...then we want to hear from you. We're not just building tools - we're architecting the future of high-performance distributed systems. Our work directly impacts Solana's ecosystem, enabling a faster network, better capital efficiency, and more robust DeFi applications for millions of users.We offer competitive compensation, significant equity, and the opportunity to work on problems that matter. Don't just watch the future of blockchain unfold—help us build it.About the PositionWe are seeking an exceptional Senior Test Engineer to join our core team building critical, next-generation infrastructure for the Solana ecosystem. Your goal is to accelerate the rate of engineering progress by ensuring that code deployed to production meets our performance, reliability, and compliance specifications. You will become very familiar with Solana's tech stack and ours, working very closely with core engineers within Jito Labs and other client teams (Anza, Firedancer, Syndica) to build high value testing frameworks.Responsibilities- Working with core engineers to understand challenges in moving fast and build monitoring and testing infrastructure to help the team move fast.- Stand up and tear down Solana clusters.- Build synthetic load testing plans for Solana clusters and Jito's core stack.- Plan testing frameworks for core engineers so new code written can have high impact tests.Relevant BackgroundsThe engineering team at Jito Labs consists of multi-disciplinary engineers. If you have experience in any of the following, you may be a good fit:- Embedded Systems- Firmware- Operating Systems- Robotics- HFTRequirements5+ years of systems-level programming in C, C++, or Rust (we use Rust)Obsessed with progress, not just motion, especially in the context of testingWillingness to dive into complicated systems to accurately root cause and fix issuesFamiliar with synthetic load testing and traffic replayHungry to learnClear, simple communicationHigh agencyExcitement for decentralized finance and high performance systems

Seedify MetaStudios is looking for a talented and experienced Generalist Game Engineer to join one of the most unique UGC platforms in the games industry: Seedworld. You have a strong knowledge of a variety of game systems implementation with Unreal Engine and experience setting up or collaborating with other engineers implementing multiple systems for scalable game projects.Responsibilities:Collaborate closely with art, design, and development teams ensuring both visual and functional requirements are metImplement diverse game systems for prototyping and beyondOptimize and improve existing systems (including but not limited to gameplay, AI, data management, etc)Write clean, efficient, and maintainable codeParticipate in code reviewsCreate and maintain technical documentationKeeping an up-to-date knowledge of Unreal Engine and improvementsDebugging and profilingExperience:Experienced using Unreal Engine 5Experience in delivering timely prototypeExperience working in cross-discipline teamsExperience implementing scalable solutionsExperience in UI in AAA projects especially if MMO or UGCWorking Knowledge of C++Nice to have/Preferred/Bonus skills:Experience participating in building an MMO, Metaverse, or a AAA project in Unreal Engine 5Experience with blockchain projectExperienced in optimizing, profiling, and debugging in Unreal Engine 5Experience in developing engine editor toolsTeam Structure:You will be an integral part of a UE game engineering team (Seedwolrd), working closely with other UE engineers and in contact with the design and art teams for various core aspects of the game development implementation, or assisting in their implementation along with other engineers.Location:100% remoteBenefits:21 days of holidays / year + local bank holidays.Sick days.Budget for training/courses.Budget towards purchasing work equipment such as laptop.Monthly salary paid in stable coins (USDC)

Arrakis aims to disrupt the current market-making industry by providing the infrastructure to enable every project in the world that wants to launch a token to benefit from non-custodial, trust-less, and automated on-chain market-making strategies. We believe in a world where every organisation, from a small startup to a large enterprise, will be tokenized and traded on-chain. For this world, Arrakis is building the tools to create the necessary liquidity to enable this token economy to rival and out-compete the traditional financial industry.As one of our Backend Developers within market making, you will be further contributing to the cutting edge development of Arrakis, working with a very experienced and high performing team to create the future of DeFi. What you will achieve:  Creation of new on-chain trading strategies Monitoring, tuning and improving market making performance across chains. Develop backend infrastructure for our market making operations Develop, refine and implement strategies and infrastructure for algorithmic  liquidity provisioning for the major tokens of the industry Requirements Strong experience building and developing high frequency, ultra-low-latency applications 3+ years of experience with C++ / Rust Good understanding of the financial market, order books, market making, arbitrage and/or markets microstructure A bachelor's degree in computer science, maths, physics, or similar field Experience working with SQL databases Experience with Google Cloud / AWS Experience working with containers such as Docker / Kubernetes Awareness of security principles for critical finance applications, both on and off-chain. Nice to have: Previous automated market making experience and experience with Uniswap Experience building your own trading bot CEX / DEX arbitrage experience Experience dealing with low level networking advantageous (TCP/IP, UDP, networking in the cloud, packet decoding, latency) Passionate about contributing / researching cutting edge DeFi technologies. Ability to know/understand smart contract code BenefitsJoin an amazing team of industry veterans focused on revolutionising web3 market making, collaborating with major projects like MakerDAO, Uniswap, Aave, Lido, operating fully remotely with members spanning Zug, Paris, New York, Berlin, London supported by world-class investors including Uniswap Labs, Robot Ventures, Accel, Longhash, and more.What we offer: Competitive salary + performance-based compensation SPICE token package Work remotely or with the Founders in person, in Switzerland Chance to travel the world to go to exciting events, connecting with key industry players  Join amazing in-person offsites all over the world About the companyBuilding Trustless Market Making Infrastructure & Strategies on Ethereum.

SORAMITSU is an award-winning global financial technology company with expertise in developing blockchain-based solutions for digital asset and identity management. Our mission is to use blockchain to promote innovation and solve pressing societal challenges.SORAMITSU is the developer of and major contributor to the open-source blockchain platform Hyperledger Iroha, which is tailored for enterprise and public-sector use. Hyperledger Iroha, a project of Hyperledger Foundation, part of the Linux Foundation, has a permissions system that is scalable and performant.Utilizing blockchain, SORAMITSU has developed a digital currency for the National Bank of Cambodia, a CBDC Proof-of-Concept with the Bank of the Lao PDR, a closed-loop payment system for the University of Aizu in Japan, an identity verification system prototype for Bank Central Asia in Indonesia, we were finalists in the Monetary Authority of Singapore CBDC Challenge, and are currently participating in Asia-Pacific's first proof-of-concept test of a cross-border, multi-currency security settlement system using distributed ledger technology with the Asian Development Bank. We have also conducted proof-of-concept tests for several major Japanese enterprises, and are active contributors to open source projects, such as Klaytn, South Korea's leading Layer-1 blockchain, KAGOME, the C++ Polkadot Host implementation, the SORA crypto-economic system, the Polkaswap DEX, and the DeFi wallet, Fearless WalletBased on these experiences, SORAMITSU aims to deploy cutting-edge technology on a global level in order to expedite financial inclusion and health, mitigate economic inefficiencies, and contribute to the fulfilment of the Sustainable Development Goals.You can find out more by visiting our homepage at soramitsu.co.jp or check out our Twitter profile.We are looking for a creative and motivated Web Developer to join our Brand Experience team. In this role, you will be responsible for creating engaging marketing websites, landing pages, and documentation websites for all of our brands and products. The ideal candidate will be passionate about creating engaging, on-brand websites and able to work independently while delivering high-quality results efficiently.You will be responsible for:Create and maintain all marketing and documentation websites for our brands and products.Execute on all phases of the web development process within the Brand Experience team, ensuring mobile and desktop compatibility.Collaborate with Marketing and Product teams to ideate and implement innovative web concepts and solutions.Ensure high-quality visual aesthetics by translating designs into functional websites through code.Develop interactive animated visuals for the web using the latest technologies.Ensure our websites deliver optimal performance across all targeted platforms and browsers.Optimise for SEO and website performance.Assist in the daily duties of the Brand Experience and Marketing teams.Manage your responsibilities autonomously in a remote-first work environment.You need to have:A portfolio showcasing your web development skills, with at least four years of professional experience.Expertise in delivering responsive, high-quality websites using Vue 3 and Nuxt 3, along with full proficiency in HTML/CSS/JS.Experience with Figma and working with design systems.Familiarity with SVG, Canvas, and WebGL visualisation libraries.Proficiency in Git/GitHub.Experience in creating static websites.Familiarity with AI tools and a strong willingness to explore the latest AI solutions to enhance efficiency.A strong general interest in Web3, crypto, and blockchain technologies.Creativity, problem-solving skills, and strong attention to detail.Excellent time management skills, with the ability to meet deadlines and multitask effectively.Ability to handle ambiguity and incomplete information.Ability to take ownership and drive projects to completion.Ability to maintain a positive attitude while giving and receiving constructive criticism with empathy and understanding of diverse perspectives and cultures.Excellent communication skills in EnglishCVs will not be considered without an accompanying portfolio.Would be nice if you had:General experience in Web3, crypto and blockchain-related projects.Personal experience of using cryptocurrencies, and familiarity with decentralised exchanges, wallets, and DeFi protocols.Knowledge and broad understanding of enterprise blockchain solutions, including payment systems and identity systems.Knowledge of meme magic and its relevance in the crypto space.What we offer:A relaxed remote-first (work from anywhere) environment with flexible working hours.A full-time permanent role within a rapidly growing international team.An educational budget to support your growth and development.Opportunities to attend global meetups and conferences for learning and speaking engagements.The opportunity to join an award-winning team designing a better world through decentralised technologies.This is a remote position. Our distributed team is mostly spread across Europe and Asia. Team meetings are held generally during European working hours, and it is expected that you would adapt if necessary and be available accordingly.If you have the required qualifications and are passionate about the Web3 industry, we encourage you to apply for this exciting opportunity.SORAMITSU values diversity and is committed to providing equal opportunities for all applicants and employees. Our employment decisions, such as hiring, promotion, discipline, and termination, are based solely on an individual's qualifications, performance, and business needs. We do not discriminate against anyone on the basis of their race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other protected status under federal, state, or local law.

About the Company Gemini is a global crypto and Web3 platform founded by Tyler Winklevoss and Cameron Winklevoss in 2014. Gemini offers a wide range of crypto products and services for individuals and institutions in over 70 countries. Crypto is about giving you greater choice, independence, and opportunity. We are here to help you on your journey. We build crypto products that are simple, elegant, and secure. Whether you are an individual or an institution, we help you buy, sell, and store your bitcoin and cryptocurrency.  At Gemini, our mission is to unlock the next era of financial, creative, and personal freedom. In the United States, we have a flexible hybrid work policy for employees who live within 30 miles of our office headquartered in New York City and our office in Seattle. Employees within the New York and Seattle metropolitan areas are expected to work from the designated office twice a week, unless there is a job-specific requirement to be in the office every workday. Employees outside of these areas are considered part of our remote-first workforce. We believe our hybrid approach for those near our NYC and Seattle offices increases productivity through more in-person collaboration where possible. The Department: Credit Card The Role: Staff Software Engineer As an engineer on our team, you’ll architect and solve complex problems that will directly influence the direction of the credit card space. There's a wide range of challenges to tackle – from ensuring the secure handling of millions of dollars worth of customer transactions, to developing innovative new credit card features, to optimizing our API response times to enhance the customer experience. We have a strong culture of code reviews, and a focus on security, with the end goal of writing and shipping high-quality code by getting things right the first time. As we scale and grow our business, we are committed to building the best credit card products in the industry. If you get excited about solving technical challenges that directly impact our customers, and the rest of the Gemini team, we’d love to hear from you. Responsibilities: Develop new products and product features on the Gemini platform, as part of a tight knit team of two to eight developers. Provide technical input and knowledge to the planning, design, and requirements process for new products and features. Review other software engineers’ code for correctness, style, and information security concerns. Improve the performance, maintainability, and operations of the Gemini code base by engaging in occasional refactoring and upgrade projects. Support your team’s production software by responding to an occasional alert or bug report. Design, develop and test operating systems level software. Oversee general functionality of the risk systems and the utilization or development of new monitoring tools for tracking and reporting performance. Identify, coordinate and manage resolution efforts on processing usage issues. Own technical issues through resolution and implement solutions and recommendations based on business needs. Plan and coordinate project implementation support efforts and estimate work efforts and schedule for supporting project development and deployment. Minimum Qualifications: At least 8 years of software engineering experience. Advanced proficiency in at least one language. We use mostly Scala and C++ on our backend and Typescript on the frontend – it’s great if you’re comfortable in those or if you’re willing to learn. The ability to work closely across teams and manage dependencies. A customer and product-focused mindset, with the ability to make well-reasoned tradeoffs between speed and quality. The ability to adapt and handle multiple competing priorities in collaboration with peers. Preferred Qualifications: Experience working with or being a power user of Bitcoin, Ethereum, and/or blockchain technology. Work experience or knowledge of the finance industry, payments, trading and/or exchange systems. It Pays to Work Here   The compensation & benefits package for this role includes: Competitive starting salary A discretionary annual bonus Long-term incentive in the form of a new hire equity grant Comprehensive health plans 401K with company matching Paid Parental Leave Flexible time off Salary Range: The base salary range for this role is between $172,000 - $215,000 in the State of New York, the State of California and the State of Washington. This range is not inclusive of our discretionary bonus or equity package. When determining a candidate’s compensation, we consider a number of factors including skillset, experience, job scope, and current market data. At Gemini, we strive to build diverse teams that reflect the people we want to empower through our products, and we are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. Equal Opportunity is the Law, and Gemini is proud to be an equal opportunity workplace. If you have a specific need that requires accommodation, please let a member of the People Team know. #LI-AH1

GAMING EXPERIENCE ESSENTIALWe are Seedworld, a dynamic and innovative video game platform committed to delivering immersive gaming experiences to our global audience. Our mission is to create engaging, rewarding, and sustainable experiences that entertain our players.We are seeking an experienced and visionary Technical Director to lead the development of our gaming platform Seedworld using Unreal Engine 5, with a focus on Unreal 5 technology with Web 3 integration. With Unreal Engine & multiplayer open world games tech expertise, you analyze, recommend and select the best technical directions in order to maximize cost & schedule efficiency, balancing short-term priorities with long term-goals.Responsibilities:Provide strategic technical leadership and direction for the development of the gaming platform. Make key technical decisions that align with business goals and project requirements.Develop and maintain a technical roadmap that outlines the steps needed to achieve short-term and long-term project goals, ensuring that the team stays on track and meets milestones.Foster collaboration between the engineering team and other departments such as art, design, and business, ensuring that all technical solutions support the creative and business objectives of the studio.Identify potential technical risks and create mitigation strategies to address them before they impact the project timeline or quality.Encourage and lead the exploration of new technologies and methodologies that can enhance the studio’s capabilities, staying ahead of industry trends.Work closely with the QA team to ensure that technical solutions meet the highest standards of quality and reliability.Provide mentorship to senior engineers, fostering a culture of growth and continuous improvement within the team.Oversee the technical budget, ensuring that resources are allocated efficiently and that the project stays within financial constraints.Act as the primary technical point of contact for internal and external stakeholders, providing clear and concise updates on the project’s technical progress.Requirements:Minimum of 8 years of experience in game development, with at least 3 years in a technical leadership role. Extensive experience with Unreal Engine 5 is essential.Extensive hands-on experience in leading AAA game development projects, with a proven track record of successfully delivering published AAA titles;Proficiency in C++, Blueprints, and Unreal Engine development. Strong understanding of front-end technologies (e.g., HTML5, CSS, JavaScript) and back-end technologies (e.g., RESTful APIs, database design, server-side programming).Solid experience in multiple aspects of game technology development (gameplay, UI & UX, 3D, network, tools, animation)Strong understanding of software development processes with respect to networked applications, blockchain and integration of the twoMastery of common software development tools like bug tracking software (e.g. Jira) & version management systems (e.g. Perforce)Good analytical and synthesis skillsAutonomy and resourcefulnessAttention to detailFlexibility in organizing workExcellent communication, interpersonal, mentorship, and presentation skillsLocation:100% remotePreferable locations APAC, EMEABenefits:21 days of holidays / year + local bank holidays.Sick days.Budget for training/courses.Budget towards purchasing work equipment such as laptop.

The Role: We are looking for a Senior iOS Developer for one of our clients. You are a perfect candidate if you are growth-oriented, you love what you do, and you enjoy working on new ideas to develop exciting products. What we’re looking for: Minimum of 5 years of extensive experience with iOS development. Proven experience with Swift for iOS development. Experience with Flutter and React Native for cross-platform development. Strong understanding of iOS development concepts including UIKit and SwiftUI. Familiarity with iOS application architecture patterns, responsive design, and state management. Responsibilities:   Lead the design, development, and maintenance of high-quality iOS applications using Kotlin, Flutter, and React Native. Utilise Flutter and React Native to build efficient and responsive cross-platform mobile applications for iOS devices. Collaborate with UI/UX designers to implement visually appealing and user-friendly interfaces for iOS applications. Conduct thorough code reviews to ensure code quality, consistency, and adherence to best practices. Implement and advocate for automated testing strategies. Identify and  address performance bottlenecks within iOS applications, optimise code and resources for improved efficiency.    What we offer:   Get paid, not played No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options. Predictable project hours Enjoy a harmonious work-life balance with consistent 8-hour working days with clients. Flex days, so you can recharge Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify. Career-accelerating positions at cutting-edge companies Discover exclusive long-term remote positions at the world's most exciting companies. Hand-picked opportunities just for you Skip the typical recruitment roadblocks and biases with personally matched positions. One seamless process, multiple opportunities A one-time contracting process for endless opportunities, with no extra assessments. Compensation Enjoy the same pay, every month with positions landed through Proxify.

Tether, the founder of the first, largest, and most widely used stablecoin USD₮, is rapidly expanding into a wide range of sectors, including secure and unstoppable communication technologies, energy production, mining, and further fintech infrastructure. All of these themes share and are deeply rooted in the principles of Bitcoin, which include decentralization, resilience, openness, freedom, security, and scalability. Tether stablecoins are used to power a wide variety of enterprises, including exchanges, wallets, payment processors, and financial services, by facilitating the use of reserve-backed tokens across blockchain networks. Tether stablecoins offer a global, secure, and instant means of storing, transmitting, and receiving digital tokens at a fraction of the cost of alternative traditional financial solutions. Unwavering transparency is of paramount importance and central to Tether's foundational principles. Our dynamic team operates entirely remotely, uniting talent from every corner of the globe. Our journey has been marked by rapid growth and efficient operations, firmly establishing us as pioneers within the industry. If you possess a passion for venturing into uncharted territory and believe in your ability to conquer even the most formidable challenges, we eagerly invite you to engage with us. Join our mission, and together, let's lay the groundwork for a decentralized future that reshapes industries far beyond the realm of stablecoins. As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry. Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth. Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.Exceptional Node/JavaScript skillsFamiliar with microservices architectureHave actively participated in the development of a complex platformFamiliar with Peer-to-Peer technologiesGood experience in interacting with databases (MySQL, MongoDB)Ability to quickly learn new technologiesGood understanding of security practices Nice to have Experience with blockchain integrationComfortable with high-availability conceptsRuby, Rust or C++ skills are a plusOther technologies of interest: Message queues (Redis), Caches and Job Queues