Junior Full-Stack Engineer (Web3)

Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time.

We are seeking a proactive and motivated Junior Full-Stack Engineer to join our lean, high-impact team and help shape the future of Web3. You’ll contribute to building innovative financial and crypto-native products, services, and APIs, supporting the delivery of cutting-edge onchain solutions.

This role is ideal for engineers who are passionate about Web3 and excited to grow in fast-paced, high-ownership environments.

As a junior member of the team, you’ll work across the stack—from developing intuitive user interfaces to contributing to backend services and assisting with smart contract integration. You’ll collaborate closely with product managers, designers, and experienced engineers to help build intuitive, secure, and performant Web3 experiences.

WHAT YOU WILL DO

• Design and build full-stack Web3 applications—including front-end components, APIs, and blockchain integrations.
• Collaborate proactively with our lean team, learning from peers and sharing your own insights as you grow.
• Tackle real-world challenges in the Web3 space, contributing to decentralized solutions with practical, hands-on engineering.
• Thrive in a fast-paced environment, leveraging the latest AI tools, frameworks, and advancements to get the job done.

WHAT YOU WILL NEED

• Web3 Interest: A foundational understanding of blockchain technologies, cryptocurrencies, and Web3 development, with a strong desire to go deeper. Exposure to client-side signing or crypto transaction flows is a plus.
• Technical Foundations: Working knowledge of TypeScript and React, with exposure to Web3 libraries (e.g., web3.js, ethers.js) and wallet integrations, or a strong interest in learning them. Familiarity with backend development concepts, RESTful APIs, and working with databases. Exposure to smart contract development or eagerness to learn tools like Hardhat, Foundry, or Anchor.
• Initiative & Growth Mindset: Eagerness to take ownership of your work—writing, testing, and shipping front-end features with increasing independence.
• Problem-Solving: Willingness to ask questions, seek clarity, and refine ideas through collaboration with engineers, designers, and product stakeholders.
• Adaptability: Excitement to work across both Web2 and Web3 challenges, and the ability to adapt quickly in a high-growth environment.
• Commitment to Quality: An appreciation for clean, secure, maintainable code and an interest in learning best practices, including automated testing.

COMPENSATION & PERKS

• Full-time salary based on experience and meaningful equity in an industry-leading company
• This is a hybrid role based in our London office, with a mandatory in-office presence three days per week.
• Work from Anywhere Policy: You can work remotely from anywhere in the world for up to 20 days per year.
• ClassPass
• Budgets for learning & professional development
• Unlimited vacation policy; work hard and take time when you need it
• Apple equipment
• The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field
• Flexible work culture

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time.

You may contact our Data Protection Officer by email at [email protected]. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment.

Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf. Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.

Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.