Description
Senior Software Engineer, (Blockchain)
Team: Engineering - Blockchain
Location: Spain, Germany, Hungary, Dubai, Portugal, United Kingdom
Commitment: Full-time
Workplace Type: remote
1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond.
So if you’re someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team.
Location: We prioritise candidates who are based in Dubai then consider those working remotely in one of our European Hub Locations (UK, Spain or Germany).
We're looking for a Senior Blockchain Engineer with a "Get Stuff Done" mentality and a passion for innovation. As a key member of our team, you'll be responsible for designing, developing, and optimising smart contracts and blockchain infrastructure. This role requires a strong problem-solver who can navigate the constant changes of the crypto market while executing quickly and maintaining a high standard of security and quality.
You'll work closely with the CPO, product teams, and other engineers to deliver innovative and secure solutions within the DeFi ecosystem. Your commitment to decentralisation and open-source development will be essential in helping us stay ahead of industry trends and build a platform that is robust and forward-thinking.
Location: For this role, we prefer candidates who are either based in Dubai or working remotely within +/- 4 hours GST time.
Responsibilities
- Designing and optimising blockchain product architecture, with a focus on scalability, security, and performance.
- Leading the development, auditing, and integration of smart contracts within decentralised protocols.
- Conducting technical research and proof-of-concept (PoC) experiments, while implementing best practices in blockchain development.
- Developing and improving cross-chain interoperability solutions, such as cross-chain swaps and bridges.
- Designing and developing efficient algorithms, with a focus on gas optimisation.
- Defining and implementing effective CI/CD processes for blockchain development.
- Analysing and addressing potential attack vectors and ensuring security best practices.
- Continuously monitoring emerging blockchain, Web3, and crypto technologies.
- Performing rigorous code reviews, mentoring developers, and enforcing best practices in blockchain engineering.
- Collaborating with auditors and cross-functional teams to ensure successful product launches.
Requirements
- 7+ years of software development experience, with at least 3+ years in blockchain engineering.
- Deep understanding of blockchain ecosystems, smart contracts (Solidity, Yul, EVM), and decentralized applications (dApps).
- Hands-on experience with Ethereum, Layer 2 solutions (Optimistic & ZK Rollups), and cross-chain protocols (atomic swaps, bridges, etc.).
- Proven track record in technical leadership, architectural decision-making, and mentoring development teams.
- Strong background in blockchain security and experience with smart contract audits.
Skills
- Proficiency in Solidity, Yul, Rust, TypeScript.
- Experience with smart contract development and deployment frameworks (Foundry, Hardhat).
- Understanding of DeFi protocols, AMMs, liquidity pools, and oracle integrations.
- Expertise in blockchain security principles and smart contract auditing methodologies.
- Experience in building high-performance distributed systems.
Why you'll love working with us
- Join a young, creative team in a fast-paced and supportive environment
- We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
- Enjoy competitive pay that matches your skills and experience
- Be part of a company that’s shaping the future of DeFi
- Take time when you need it — we offer unlimited vacation days
- Get fully compensated for your work gear — we’ll set you up for success
- Travel with us! We host an annual team retreat at a top international location
There are more than 50,000 engineering jobs:
Subscribe to membership and unlock all jobs
Engineering Jobs
60,000+ jobs from 4,500+ well-funded companies
Updated Daily
New jobs are added every day as companies post them
Refined Search
Use filters like skill, location, etc to narrow results
Become a member
🥳🥳🥳 452 happy customers and counting...
Overall, over 80% of customers chose to renew their subscriptions after the initial sign-up.
To try it out
For active job seekers
For those who are passive looking
Cancel anytime
Frequently Asked Questions
- We prioritize job seekers as our customers, unlike bigger job sites, by charging a small fee to provide them with curated access to the best companies and up-to-date jobs. This focus allows us to deliver a more personalized and effective job search experience.
- We've got over 200,000 jobs from 15,000+ vetted companies. No fake or sleazy jobs here!
- We aggregate jobs from 15,000+ companies' career pages, so you can be sure that you're getting the most up-to-date and relevant jobs.
- We're the only job board *for* software engineers, *by* software engineers… in case you needed a reminder! We add thousands of new jobs daily and offer powerful search filters just for you. 🛠️
- Every single hour! We add 2,000-3,000 new jobs daily, so you'll always have fresh opportunities. 🚀
- Typically, job searches take 3-6 months. EchoJobs helps you spend more time applying and less time hunting. 🎯
- Check daily! We're always updating with new jobs. Set up job alerts for even quicker access. 📅
What Fellow Engineers Say