Testing jobs in crypto and blockchain companies

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.   What we offer: Earn $5k—$10,4k monthly: the rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers. No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best. We'll manually find the best project for you according to your skills and preferences. Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours. We respect your seniority so you can expect no micromanagement or screen trackers. Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah? We will support you from the time you submit the application throughout all cooperation stages. Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do. Through our community, we will connect you with the best developers from more than 50 countries.   Requirements: 4+ years of software development experience. 3+ years of commercial experience with React.js. 3+ years of commercial experience with Python AND/OR 4+ years of experience with Node.js.   For React & Python Developer: hands-on experience with AWS, Next.js, TypeScript, PostgreSQL would be a plus. For React & Node Developer: hands-on experience with AWS, Next.js, TypeScript is a must.   Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture. Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls. Strong self-organizational skills — ability to work full-time remotely with no supervision. Reliability — we want to trust you and expect that you won’t let us and the client down. Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.   Sounds good for you? Apply now and join the Lemon.io community!   NOT YOUR TECH STACK? We have different projects for Senior Engineers, so if you have 4+ years of commercial experience in software development/testing and you are fluent with AI Engineering or QA Engineering, Blockchain, Solidity, we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.   If your experience matches our requirements, be ready for the next steps: VideoAsk — watch a short video about our startup, up to 10 minutes Complete your profile on our website 30-minute screening call Technical interview Feedback Magic Box (we are looking for the best project for you).   P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.   At the moment, we don’t have a legal basis to accept applicants from the following countries: European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia. Latin America: Cuba and Nicaragua Most Asian countries and Africa.   We expand and shorten the list of exemptions regularly.   Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

Company DescriptionCeffu is an institutional custody platform on a mission to propel the adoption and active participation of institutional investors in the digital asset ecosystem. With world-class security and liquidity solutions, Ceffu provides a unique gateway to the world’s deepest liquidity as the only institutional crypto custody partner of the Binance Exchange, positioning itself as one of the leading global institutional custody technology providers. Visit www.ceffu.com for more information.Job DescriptionWork closely with team members (developers, product manager, customer support and partners) to develop, test and deliver high quality productsCreate detailed, comprehensive and well-structured test plans and test casesPrevent, report, analyze and track issues in an effective and efficient mannerRoot cause analysis of existing script failures or product issues, propose and drive enhancement for minimizing project issues or risksDesign, develop and execute automation scripts or implement quality tools to continuously increase efficiencyQualifications3 years experience in software testing methodologies, both manual and automatedPrior working experience for banks, payment systems or fund security testing is a big plus Experience in writing clear and comprehensive test plans and test casesExperience testing backend services such as APIs, distributed servicesFamiliar with AWS and database operationFamiliar with test environment construction with CICDGood programming ability, master at least one of Java, Python and other programming languagesStrong analytical and trouble-shooting skillsExperience working in an Agile/Scrum development process Good interpersonal, consultative and communication skillsSelf-managed, proactive work style and good commitmentAdditional InformationAll your information will be kept confidential according to EEO guidelines.

The InfoSec team at Chainalysis is focused on maintaining the security and integrity of our solutions. We collaborate with various teams to integrate secure practices into our development processes, build and manage security tools and dashboards, and oversee the security operations and deployment across our products and infrastructure.The Product Security Engineer at Chainalysis is dedicated to maintaining and enhancing the security of our products.. This role involves collaborating with developers to embed security into every stage of the product lifecycle, building custom security tools, automating assessments, and ensuring a robust security posture within our CI/CD pipelines. The Product Security Engineer also leads proactive efforts in vulnerability management, penetration testing, and security reviews to safeguard our products and continuously enhance our security practicesIn this role, you’ll: Conduct penetration testing and security assessments to identify vulnerabilities and ensure robust security measures.Develop and maintain custom security tools and scripts to automate and enhance security processes.Collaborate with development teams to integrate secure coding practices and solutions into both front-end and back-end systems.Review and improve security within CI/CD pipelines, integrating tools like SonarCloud and Wiz for continuous security assurance.Perform security audits and code reviews, offering guidance through pull requests and collaborative sessions.Analyze and address security issues by providing expert advice and actionable solutions to maintain the integrity of applications.We’re looking for candidates who have: Hands-on experience in penetration testing and security assessments, with a strong ability to identify and mitigate vulnerabilities.Excellent communication skills, both verbal and written, for effective collaboration with cross-functional teams.Proficiency with security tools like Burp Suite, Sonarcloud, Jfrog, and Wiz, and the capability to create custom scripts using Python to enhance automation.Proficient coding skills with a focus on security, particularly in Java and/or JavaScript. Alternative languages include Python and Go.Extensive knowledge of cloud security practices, specifically on platforms such as AWS and GCP.Experience integrating security tools into CI/CD pipelines, and a demonstrated ability to automate security testing within development workflows.Nice to have experience:Familiarity with blockchain or cryptocurrency security challenges and solutions.Experience with Infrastructure as Code (IaC), particularly reviewing and securing Terraform code.Certifications such as CISSP, OSCP, or similar credentials, demonstrating a formalized knowledge of security principles and practices.Technologies we use and teach:Coding Languages: Java, Python, and JavascriptIaC: TerraformCloud: AWS, GCP, CloudflareCI/CD Pipeline: GitHub, GitHub Actions, JenkinsAPIs: REST APIsAbout ChainalysisBlockchain technology is powering a growing wave of innovation. Businesses and governments around the world are using blockchains to make banking more efficient, connect with their customers, and investigate criminal cases. As adoption of blockchain technology grows, more and more organizations seek access to all this ecosystem has to offer. That’s where Chainalysis comes in. We provide complete knowledge of what’s happening on blockchains through our data, services, and solutions. With Chainalysis, organizations can navigate blockchains safely and with confidence.You belong here. At Chainalysis, we believe that diversity of experience and thought makes us stronger. With both customers and employees around the world, we are committed to ensuring our team reflects the unique communities around us. Some of the ways we’re ensuring we keep learning are an internal Diversity Committee, Days of Reflection throughout the year including International Women’s Day, Harvey Milk Day, World Humanitarian Day, and UN International Migrants Day, and a commitment to continue revisiting and reevaluating our diversity culture. We encourage applicants across any race, ethnicity, gender/gender expression, age, spirituality, ability, experience and more. If you need any accommodations to make our interview process more accessible to you due to a disability, don't hesitate to let us know. You can learn more here. We can’t wait to meet you. 

Mural, the leading visual work platform for the enterprise, makes teamwork feel like less work. Our intuitive visual workspace enables teams to easily work together and collaborate better using proven design-thinking techniques. Built for enterprise teams, Mural meets the most stringent of IT and regulatory requirements. Industry leaders — including IBM, ‌Microsoft, SAP, and Abercrombie & Fitch — choose Mural to help their teams accelerate innovation and problem solving at scale. Whether your team is fully remote, distributed, in the office, or still figuring it out, Mural brings teams across the enterprise together to do the work that matters most.ABOUT THE TEAM The product security plays a vital role in identifying and mitigating risks within the Mural product as well as partnering with other engineering teams to recommend product features that enhance security for our customers. YOUR MISSION As an Application Security Engineer, your role will involve executing the MURAL product security strategy. You will manage Mural’s public bug bounty submissions, SAST testing within our CI workflow. Collaborating closely with developers, you will work to expand security testing coverage and lead security reviews of MURAL product features. Additionally, you will play a crucial role in educating and promoting secure coding best practices. WHAT YOU'LL DO Performing security reviews of Mural product features and architecture Manage and operate our bug bounty program Lead penetration testing and manage any risks to remediation Implementation and operation of SAST and DAST technologies in the CI workflow Working closely with Engineering teams to track and manage product risks to remediation Working closely with Engineering to increase coverage of security testing Communicating and nurturing relationships with security researchers, customers, and other stakeholders Producing metrics to help track the health of our product vulnerability management strategy Educating and evangelizing secure coding best practices WHAT YOU'LL BRING 5+ years experience in a product security focused role Experience with product security at a multi-tenant SaaS company preferred Experience with vulnerability management Deep understanding of web application and mobile application security risks Deep understanding of Linux, Networking, Cryptography, and Cloud Architecture fundamentals Software development experience with Node.JS or other frameworks like React, Angular, etc. is a preferred Familiarity with MongoDB, Node.JS, Ruby, and/or Python is preferred.  If you have participated in public or private Bug Bounty programs, or have any other open source or community contributions, presentations, or blog posts in the security space, please share it with us! Excellent command of English, both written and verbal For roles based in New York City, California, Colorado, and Washington, the base salary for this role ranges from $160,000 - $200,000 + benefits. Compensation offered will be determined by factors such as location, level, job-related knowledge, skills, and experience. Certain roles may be eligible for variable compensation.Equal Opportunity  We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

About Paxos Today’s financial infrastructure is archaic, expensive, inefficient and risky — supporting a system that leaves out more people than it lets in. So we’re rebuilding it. We’re on a mission to open the world’s financial system to everyone by enabling the instant movement of any asset, any time, in a trustworthy way. For over a decade, we’ve built blockchain infrastructure that tokenizes, custodies, trades and settles assets for the world’s leading financial institutions, like PayPal, Venmo, Mastercard and Interactive Brokers. About the team The Compliance team plays a vital role in ensuring Paxos adheres to global regulatory standards across financial products and services. This team tackles complex challenges such as AML, sanctions, and transaction monitoring, all while ensuring a robust compliance framework in a rapidly evolving crypto and fintech landscape. By safeguarding Paxos against regulatory risks, the team is essential in helping the company achieve its mission of creating a more transparent and efficient financial ecosystem. About the role As a Quality Control and Testing Program Manager, you will be responsible for overseeing the integrity of Paxos' compliance programs, focusing on regulatory reporting (SARs/STRs), testing, and risk mitigation. You will address challenges such as improving QC processes, ensuring compliance with evolving regulations, and leading initiatives to streamline reporting workflows. This role plays a critical part in maintaining Paxos’ regulatory standing and contributing to the company’s long-term operational success. What you'll do  Lead and manage the QC process for compliance, focusing on regulatory reporting (SARs/STRs). Design and execute testing frameworks for AML and sanctions compliance. Collaborate with cross-functional teams to identify gaps in QC processes and develop remediation plans. Own the execution of quality control and testing initiatives across various compliance functions. Drive process improvements that enhance reporting accuracy and regulatory compliance. Work closely with senior stakeholders and compliance leadership to ensure alignment on risk management strategies. About you 4-5+ years of experience in compliance, focusing on BSA/AML, sanctions, and regulatory reporting. Proven track record in leading QC programs and developing testing frameworks. Experience working with SARs/STRs and regulatory audits. Strong analytical skills and proficiency with data tools like Google Suite and Looker. Excellent stakeholder management and communication skills, with the ability to work cross-functionally. Demonstrated experience in identifying process inefficiencies and implementing solutions. Excellent communication skills, both written and verbal While we do not require prior work in the fintech, crypto, or blockchain industries, candidates must demonstrate an aptitude for the space and show they can quickly understand our processes.  Paxos offers a competitive total compensation and benefits package, including equity. Actual salary within that range is dependent upon the individual’s skills, experience and qualifications.Expected range for the salary component for candidates located within the United States is:$180,000—$243,000 USD

We are looking for a detail-oriented QA Tester with experience in mobile games to join our team and who will be responsible for testing our games, identifying bugs and ensuring a smooth player experience. You’ll collaborate closely with the team to uphold our quality standards and contribute to creating a polished final product.All the responsibilities we'll trust you with:You'll test the mobile game across various platforms (iOS, Android) to identify and report bugs, glitches, and gameplay issues.You’ll perform functional, regression, and performance testing to ensure game quality and stability.You’ll collaborate closely with developers, designers, and other QA team members to understand game features, mechanics, and design goals.You’ll write clear and detailed bug reports, including reproduction steps, expected results, and actual results.You’ll execute test plans, test cases, and checklists throughout the development cycle.You’ll participate in daily stand-ups, sprint planning, and team meetings to provide updates on testing progress and issues.You’ll ensure the game meets platform-specific guidelines and requirements (Apple, Google).You’ll conduct usability testing to ensure a smooth and enjoyable user experience.You’ll stay up-to-date with the latest trends in mobile gaming and QA methodologies.What you'll bring to the team:At least 2 years of experience in QA for mobile games.Experience working with mobile devices, emulators, and debugging tools.Strong understanding of mobile platforms (iOS, Android) and their testing environments.Proficiency in bug tracking tool JIRA.Excellent attention to detail, with the ability to spot subtle issues in gameplay and UI.Knowledge of game development pipelines and agile workflows.Excellent English proficiency to collaborate effectively with our international team.Strong communication skills to effectively report and discuss issues with the development team.Passion for gaming, with a solid understanding of game mechanics and user experience principles.Why you'll love working with us:We’re 100% remote, work wherever you want forever!We offer unlimited holidays and sick days. Take as much time off as you need, to spend time with your family and friends or just because you feel like playing games all day. We trust our team and want to offer a modern work life balance that allows you to thrive both at work and in your personal life.You’ll be able to make an impact, to work closely with the rest of the team and its leads to work on one of the most promising upcoming games in the mobile gaming industry and the Web3 space.You’ll have a comfortable work schedule and stable workload. With a variety of tasks that will allow your constant professional development.We want our team to grow personally and professionally and support learning opportunities, especially with a focus around new AI tools and methods. We have a culture that puts our people first. We believe in open communication, creativity and the value of unique contributions from everyone in the team.We offer a competitive salary in addition to equity option plans.

Vivid is a dynamic fintech company that provides innovative solutions to enhance our users' financial experience. We are on a mission to identify and solve user problems, continuously improve our products, and introduce new features to make financial management more straightforward and more rewarding. As a Copywriter at Vivid and as part of our Growth Team, you will play a pivotal role in shaping the future of our products and services.What you will do:● Assist in proofreading English copies to ensure cohesion among different teams.● Assist in copywriting in-app, marketing, legal, website and communications texts in English and German.● Translate content from English to German to ensure continuity and a high language level throughout platforms.● Assist in managing localisation projects from start to finish, ensuring timely and accurate delivery of localised content.● Coordinate with internal stakeholders and external vendors to allocate resources and review translations.● Maintain and update localisation glossaries, style guides, and reference materials for consistency.● Conduct linguistic and functional testing of localised products and services to identify and resolve issues.● Assist in managing localisation budgets, tracking costs, and optimising localisation processes.● Stay updated with industry trends and propose innovative ideas to improve localisation strategies.Requirements● Bachelor's degree in Translation, Localization, Linguistics, or a related field (Master's degree is a plus).● Strong understanding of localisation concepts, tools, and processes.● Excellent written and verbal communication skills in English and native German. ● Attention to detail and ability to maintain high-quality standards in translations and localised content.Would be a plus:● Proficiency in Dutch or Polish.Benefits We have a hybrid model in one of our offices, Berlin, Limassol or Almaty, or fully remote outside office locations. Competitive salary and benefits package (depending on location). If you're looking for an exciting new opportunity to advance your skills and make an impact in the world of finance, Vivid is the perfect place for you. Join our talented team of professionals and help us revolutionize the way people think about their money!About the companyVivid offers a unique mobile banking app and a distinctive digital investing platform from a single app. Whether it’s payments, transfers, multi-currency accounts for your travels, spendings reports, split bills as well as the possibility to invest in international stocks, ETFs, precious metals and crypto. With Vivid, managing your finances is easy, flexible and 100% transparent. We founded Vivid wanting to bring a colourful and entirely different experience to modern banking. Banking needs to put the customer first and in control. With our knowledge and experience, we strive to help our customers earn more and increase their wealth. Online banking needs to be very easy, and on the other hand, very safe. On the 8th of June 2020, Vivid was launched in Germany as its first market, followed by France, Spain and Italy, with more European countries to come!

About Paxos  Today’s financial infrastructure is archaic, expensive, inefficient and risky — supporting a system that leaves out more people than it lets in. So we’re rebuilding it. We’re on a mission to open the world’s financial system to everyone by enabling the instant movement of any asset, any time, in a trustworthy way. For over a decade, we’ve built blockchain infrastructure that tokenizes, custodies, trades and settles assets for the world’s leading financial institutions, like PayPal, Venmo, Mastercard and Interactive Brokers.  About the team The Money Movement team’s mandate is to provide seamless access to Paxos’s network of tokens and partners. We work directly with payments and web3 firms who are interested in incorporating crypto/stablecoin into their platforms. We are trying to solve the problem of how to provide fast, reliable and trustworthy movements of funds at scale to support clients like Paypal, Mastercard. About the role  As a Software Engineer on the Money Movement team, you will be directly responsible for building the products that hundreds of millions of people will interact with to transact and transfer assets on/off platforms like Paypal and Venmo.  You’ll have the opportunity to work in a fast-paced, mission driven organization that rewards ownership. At Paxos we are highly collaborative and every engineer works closely with our product team and external stakeholders to shape our roadmap and tech strategy.  What you’ll do  Join a highly collaborative team with direct impact on the company revenue Own feature development from design to implementation to testing to deployment Develop, maintain and improve platform capabilities that hundreds of millions of customers depend on Work across a cloud-native stack incorporating the latest technologies Scale our existing services to power the global adoption of crypto/stablecoins About you 3+ years in software engineering Strong computer science and programming fundamentals (data structures, algorithms) Experience designing, developing, maintaining production services Effective collaboration with stakeholders The ability to write high-quality, well-tested code Eagerness to disrupt the status quo and democratize access to the financial system

Bishop Fox is the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface management to product, cloud, and application security assessments. We’ve worked with more than a quarter of the Fortune 100, half of the Fortune 10, eight of the top 10 global technology companies, and all of the top global media companies. Our Cosmos platform, service innovation, and culture of excellence continue to gather accolades from industry award programs including Fast Company, Inc., SC Media, and others. For more than 16 years, we've been contributing and giving back to the security community. We’ve published more than 16 open source tools and 50 security advisories in the last five years alone. Learn more at bishopfox.com or follow us on social media.  We’re looking for talented, experienced professional hackers to help us secure some of the world’s most complex software and sophisticated technologies. You’ll be working alongside our Mexico, US, and other internationally-based teams supporting clients across multiple industries.                                                    Responsibilities You’re a penetration tester who knows their way around source code. You’ve plundered apps and pillaged networks (legally, of course). You have a passion for hacking and information security. You may also have written a few blog posts about your favorite hacks or have presented at a handful of conferences – with an eye to doing more. With Bishop Fox, your responsibilities would include testing web applications, hacking networks, and reversing software. As a consultant, you’ll work on a variety of projects which include short-term engagements and extended program work with well-established clients. You'll solve challenging technical problems and build creative solutions. As a trusted advisor, you’ll provide your expert opinion to help our clients navigate difficult business decisions.         Requirements 7+ years experience in planning, conducting, and managing web application penetration tests 5+ years of application security experience Deep understanding of security fundamentals (OWASP), common vulnerabilities, and application security best practices Skilled in vulnerability assessment and the development of exploits for diverse targets Background in system and network security, authentication and security protocols, and applied cryptography is helpful Experience with programming and scripting languages such as Python, Ruby, PowerShell, Java, JavaScript, etc. Experience with AWS cloud environments preferred with an understanding of its major technologies, such as IAM, EC2, VPC, EBS, S3, CloudWatch, and Lambdas, and how to keep them secure Proficiency with operating systems- Linux, Windows, MacOS Experience with network and system exploitation including modern tactics, techniques, and procedures (e.g. c2 frameworks, EDR bypass, privilege escalation, password cracking, lateral movement, etc.) Strong technical reporting and documentation skills Advanced relevant academic training, such as a degree in Computer Science or an OSCP, is a definite bonus Bishop Fox has always allowed its employees to work remotely, and this role could work anywhere in Mexico. Our comprehensive benefits program is tailored to meet your needs. We embrace diversity and an inclusive culture. We value our employees and who they are, which fosters a powerful and collective talent base to successfully serve our clients and the security community with unparalleled expertise.  Bishop Fox is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex including sexual orientation and gender identity, national origin, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.  All new hires must pass a background check as a condition of employment. Interested? Apply today!   

AAA STUDIO EXPERIENCE ESSENTIAL!!!! Are you a Tech Recruiter who can speak Tech, Geek and Games fluently? If so, we need you on our team! We’re a next generation Blockchain Metaverse Studio and leading Blockchain P2E & NFT launchpads in the world that have launched 50+ projects. We need a Gaming Recruiter on a remote basis to help build the best AAA Open World RPG Web3 game & launch more projects though the biggest p2e incubator. What We Need:An experienced gaming recruiter to source and recruit qualified candidates for open roles at our game development studios. Your primary focus will be filling open positions in our studio Game Development teams including Engineering, Game Design, Art, Animation, Production and others as needed. You will partner with hiring managers to drive candidate hiring process forward including: create new job descriptions, sourcing and building your own candidate pipeline, manage candidate testing, interview potential candidates, evaluate candidates potential fit for hire, organize interview schedules, and close offers.What You Will Do:Your primary focus will be filling open positions in our studio Game Development teams including Engineering, Game Design, Art, Animation, Production and others as needed.Participate in all recruiting events including but not limited to job fairs, virtual-recruiting job fair, open houses, and public speaking eventsProactively research and be aware of current industry events, trends, and how to use that intel to our advantageCandidate sourcing, and aggressively looking for creative ways to find the talent we needDevelop and maintain relationships with industry colleagues, agencies, and other sources of high-quality candidates Who We Think Will Be A Good Fit:We are going through hypergrowth. We source, we cold call, we are constantly looking for creative ways to find the talent we need. We are a team, and we work in partnership together to help each other to succeed. We strive always to partner with our hiring managers to help make them better, more effective hiring experts. Bachelor’s degree and 5+ years’ experience or an equivalent combination of education and experiencePreferred candidate will have 3+ years’ experience as an in-house recruiter in video game development/or creative studio environment ( games, animation, VFX)Versatility, flexibility, and a willingness to work with swiftly changing prioritiesExcellent organizational skills & multitasking abilitiesAccustomed to documenting your work daily in an ATS. Proven ability to handle multiple projects and meet strict deadlinesStrong interpersonal & communication skills, both written and verbalAbility to deal effectively with diverse individuals at all organizational levelsGood judgment with the ability to make timely and sound decisionsCreative, flexible, and innovative team player