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About us: B2C2 is a digital asset pioneer building the ecosystem of the future.The firm has unlocked institutional access to crypto by providing reliable liquidity across market conditions. B2C2’s success is built on crypto-native technology and continuous product innovation, making it the partner of choice for diverse institutions globally.Founded in 2015 and acquired by Japanese financial group, SBI, in 2020, B2C2 remains a standalone company. Headquartered in the UK, with offices in the US and Japan, B2C2 OTC Ltd. is authorised and regulated by the UK’s Financial Conduct Authority (FRN 810834). We pride ourselves on our company culture and ability to attract not only the top talent but the right people. If you are looking for a role in an exciting new industry, at a dynamic company please keep reading. About the role: The Risk Technology team develops and maintains high-performance position keeping and valuation software for global trading. These trade booking and risk management systems power signals for strategies, treasury operations and risk management. We focus on optimising every component of the stack—including multi-threading, network communication and encoding, to achieve low latency and high throughput. Robust monitoring, alerting, and performance tracking ensure system reliability and uptime. The team possesses deep expertise in complex event processing systems, network architectures, and concurrent computing, supporting a complex and high-frequency trading landscape. We work closely with the Chief Risk Officer and wider Risk, Operations, Trading and Quant teams. Our internal customers cover the whole spectrum of risk, from low latency signals for strategies through point in time and historical regulatory reporting, then on to forward looking stress testing and VaR models. We are looking for a Senior Java Software Developer to join our Risk Technology team. This is an opportunity to gain experience in High Frequency Trading (HFT) platforms while contributing to the growth of the business. This role is based in our London office, with the option to work remotely up to two days per week. Duties and Responsibilities:
Develop and maintain efficient Java-based applications and components, ensuring high-quality code and adherence to coding standards. Understand end to end risk data flows. Improve our automation framework. Identify and fix inefficiencies in the plant. Maintain and enhance in-house shared libraries to ensure their reliability and effectiveness. Write robust, maintainable, automatically tested and well-documented code to meet project goals and deadlines. Troubleshoot and resolve software defects and technical issues to minimise disruption in revenue-generating processes. Collaborate with cross-functional teams to define and implement new features. Participate in code reviews and incorporate feedback to enhance the code. Maintain and enforce good quality internal documentation.
Required Skills and experience:
Experience in TradFi spot FX, rates or equity markets. 5+ years of software development in Core Java (J2SE). Deep understanding of object-oriented programming concepts, and design patterns for performance, scalability and safety of delivered solutions. Clean and efficient coding >
Preferred Qualifications:
Experience in TradFi or DeFi derivatives markets. Understanding of network technologies and protocols (e.g. TCP, gRPC, SBE). Experience with asynchronous event-driven applications. Understanding of low GC, highly efficient coding in Java. Experience with Kafka, Redis or Aeron. Experience with Linux, Docker, Kubernetes and/or AWS. Knowledge of relational databases and SQL. Comfortable coding in Python. Interest in crypto.
What we offer:
An amazing global culture who are ambitious, innovative and fun while working with the highest levels of honesty and integrity. Two discretionary bonus awards a year. A range of benefits in line with local market practice. Regular fun events and activities, as well as Social Impact volunteering days. A strong culture is a common denominator among the most successful companies and B2C2 is proud to be a values-based company.
Ambitious - Striving to make history through world class achievements Innovative - Forward looking in our solutions for clients and employees Meritocratic - Rewarding positive contribution across the organisation Collegiate - Achieving through teamwork through a healthy environment Risk Aware – Informed decision making and considered in our practices
Equal Employment Opportunities Policy: B2C2 is committed to a policy of equal employment opportunity for applicants and employees and we welcome applicants from all backgrounds. It is the policy of B2C2 to apply recruiting, hiring, training, promotion, compensation and professional development practices without regard to actual or perceived race, colour, religion, sex (including pregnancy, sexual orientation and gender identity), national origin, age, disability or certain classifications based on genetic information, or because someone is married or in a civil partnership or any other characteristic protected by federal, state or local laws, regulations or ordinances. As such, B2C2 will not tolerate discrimination against any of our employees on the basis of membership in a protected category. We are also committed to creating an inclusive environment to ensure we attract, engage, promote and retain the best talent. We will consider flexible working arrangements for any of our roles.
Apply Now:
Ready to be pushed beyond what you think you’re capable of?
At Coinbase, our mission is to increase economic freedom in the world. It’s a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform — and with it, the future global financial system.
To achieve our mission, we’re seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the financial system. We want someone who is eager to leave their mark on the world, who relishes the pressure and privilege of working with high caliber colleagues, and who actively seeks feedback to keep leveling up. We want someone who will run towards, not away from, solving the company’s hardest problems.
Our work culture is intense and isn’t for everyone. But if you want to build the future alongside others who excel in their disciplines and expect the same from you, there’s no better place to be.
While many roles at Coinbase are remote-first, we are not remote-only. In-person participation is required throughout the year. Team and company-wide offsites are held multiple times annually to foster collaboration, connection, and alignment. Attendance is expected and fully supported.
We’re looking for a Senior Software Engineer to join the Crypto Data Foundation - Core team!
Our team has built the fundamental Web3 infrastructure, the data layer, by delivering an open-source, industry-leading suite of data availability solutions, ChainStack, to ensure efficient and scalable access. ChainStack is designed to ingest, index, and parse vast amounts of crypto data with minimal latency, providing a comprehensive solution to a widespread industry challenge. Come join us!
What you’ll be doing:
What we look for in you:
Nice to haves:
Job #: GPBE05US
*Answers to crypto-related questions may be used to evaluate your onchain experience
#LI-Remote
Please be advised that each candidate may submit a maximum of four applications within any 30-day period. We encourage you to carefully evaluate how your skills and interests align with Coinbase's roles before applying.
Coinbase is committed to diversity in its workforce and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sex, gender expression or identity, sexual orientation or any other basis protected by applicable law. Coinbase will also consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state and local law. For US applicants, you may view the Know Your Rights notice here. Additionally, Coinbase participates in the E-Verify programin certain locations, as required by law.
Coinbase is also committed to providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please contact us at accommodations[at]coinbase.com to let us know the nature of your request and your contact information. For quick access to screen reading technology compatible with this site click here to download a free compatible screen reader (free step by step tutorial can be found here).
Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job applicants. Our full notice outlining how data will be processed as part of the application procedure for applicable locations is available here. By submitting your application, you are agreeing to our use and processing of your data as required. For US applicants only, by submitting your application you are agreeing to arbitration of disputes as outlined here.
Apply Now:
Job Title: Founding Full-Stack Developer (AI Focus) - Ryze Labs Incubation
About Ryze Labs:
Ryze Labs is an innovative venture capital firm that not only invests in groundbreaking startups but also actively incubates and builds its own ventures from the ground up. We believe in fostering a dynamic environment where bold ideas are transformed into impactful products. As we embark on a new wave of internal projects, we're seeking a visionary and hands-on developer to be a foundational member of our incubation team.
The Opportunity:
We are looking for an exceptionally talented and hyper-entrepreneurial Full-Stack Developer with a keen interest and practical experience in Artificial Intelligence. This isn't just a coding role; it's an opportunity to be a co-creator, to shape product vision, and to rapidly iterate on new concepts within a fast-paced, lean incubation environment. You will be instrumental in bringing our internal ideas to life, from initial prototype to potential market launch.
What You'll Do:
Who You Are:
Why Join Ryze Labs:
Ready to Build the Future with Us?
If you're a passionate, entrepreneurial full-stack developer with a deep curiosity for AI and a desire to build groundbreaking products, we want to hear from you! Reach out to email to submit your resume.
Apply Now:
Apply Now:
We’re building a genuine GameFi platform featuring casino games, live betting, sports, unique in-house games, rewarding gameplay, and a focus on delivering the best user experience and performance.
What You’ll Do
•Build and ship features across Svelte, TypeScript, and Tailwind
•Work with real-time systems: WebSockets, live balances, and sessions
•Write code that’s fast, secure, and production-ready
•Take ownership of features that impact real-money play in an iGaming environment
•Collaborate with a senior product/dev team, no micromanagement, full accountability
Our Stack
•Frontend: Svelte, TypeScript, Tailwind
•Backend: Rust, Node.js, Elixir, PostgreSQL, Redis, WebSockets
•Blockchain: Ethers.js, Web3.js, TronWeb
•Infra: Docker, AWS, Cloudflare, CI/CD
You
•5+ years in full-stack roles
•Strong with TypeScript, clean architecture, and test coverage
•Solid understanding of real-time systems and data integrity
•Hands-on experience in crypto and iGaming is essential
•You take ownership, from delivery to edge cases and performance
•Clear communicator, fluent in English
•Experience managing or mentoring devs is a big plus
We are specifically seeking someone with solid experience in both iGaming and crypto who is sharp, reliable, and ready to contribute from day one.Apply Now:
Job Description:
Winnables.com is looking for a creative front-end-leaning Full Stack Developer who loves bringing slick, engaging user experiences to life while still caring about the behind-the-scenes details.
You’ll collaborate closely with designers and product leads, iterate quickly on new ideas, and see the direct impact of your work in the hands of players around the world.
If you enjoy mixing imaginative front-end polish with just enough back-end know-how to make the magic happen, we’d love to hear from you.
Key Responsabilities:
What You’ll Be Building
Tech Stack:
What We're Looking For
Nice to Have
Winnables.com is on a mission to re-imagine iGaming through full on-chain transparency. We believe players deserve provably fair odds, transparent math, and no black-box RNGs. Every spin and ticket purchase is recorded immutably on Ethereum, so anyone can audit the outcome, track prize pools, or even build their own analytics on top of our contracts.
All of our games are designed and engineered 100% in-house by a small, senior team that blends game design, cryptography, and smart-contract security. We currently operate two flagship experiences:
We’re still just getting started. The roadmap is full of green-field challenges—and real, measurable impact on an industry ripe for change. Join us and help craft the next generation of fair, fun, and truly player-owned gaming.
Apply Now:
📌Backend Developer – Java, Spring & Kafka (Full-time Contract, Remote) Kick off your next career move with Launchpad! We're looking for a technically curious backend developer ready to make an impact in a collaborative, clean-code-driven environment. If you’re passionate about building scalable services, exploring domain-driven design, and working on distributed systems, this might be the opportunity for you.
🗓 Start date: August 2025📆 Contract type: Contractor, indefinite🌐 Work hours: Monday to Friday, 7.30 to 16.30 PST - 100% Remote
🛠️ What You’ll Be Doing
Designing and implementing backend services in Java and Spring Boot to power scalable, high-performing systems
Applying Hexagonal Architecture and clean code principles to ensure long-term maintainability and modularity
Building and consuming RESTful APIs, focusing on versioning and developer-friendly design
Integrating asynchronous processes using Apache Kafka in a distributed microservices architecture
Collaborating with infrastructure engineers to deploy services using Terraform on Microsoft Azure
Participating in code reviews and applying software craftsmanship in a team that values continuous learning
✅ What You Need to Succeed Must-haves
2–4 years of experience as a Java backend developer
Solid hands-on experience with the Spring Boot ecosystem (e.g., Spring Web, Spring Data JPA, Spring Security)
Proven ability to design, consume, and document RESTful APIs
Comfort working with relational databases such as MySQL or PostgreSQL
Confident writing and maintaining unit and integration tests
Experience working with Git and following modern version control workflows
Strong communication and collaboration skills in distributed teams
Nice-to-haves
Familiarity with Hexagonal Architecture (Ports & Adapters)
Experience applying Domain-Driven Design (DDD) and CQRS
Knowledge of Apache Kafka for event-driven architectures
Exposure to non-relational databases like Redis
Experience deploying services on Azure using Terraform
🧭 Our Recruitment Process Here’s what to expect from our candidate-friendly interview process:
Initial Interview – 60 minutes with our Talent Acquisition Specialist
Culture Fit – 30 minutes with our Team Engagement Manager
Technical Interview – 60 minutes with the Team and Hiring Manager, general overview of your expertise
Final Interview - 60 minutes with the Team and Hiring Manager, exploring your technical and problem-solving skills
🌟 Why Join Launchpad? We believe that great work starts with great people. At Launchpad, we offer:
💻 Fully remote work with hardware provided
🌎 Global team experience with clients in Northamerica
💸 Competitive USD compensation
📚 Training and learning stipends
🌴 Paid Time Off (vacation, personal, study)
🧘♂️ A culture that values autonomy, purpose, and human connection
✨ Ready to make your mark? Apply now and be part of something exciting.
Apply Now: