Backend Developer
Track This Job
Add this job to your tracking list to:
- Monitor application status and updates
- Change status (Applied, Interview, Offer, etc.)
- Add personal notes and comments
- Set reminders for follow-ups
- Track your entire application journey
Save This Job
Add this job to your saved collection to:
- Access easily from your saved jobs dashboard
- Review job details later without searching again
- Compare with other saved opportunities
- Keep a collection of interesting positions
- Receive notifications about saved jobs before they expire
AI-Powered Job Summary
Get a concise overview of key job requirements, responsibilities, and qualifications in seconds.
Pro Tip: Use this feature to quickly decide if a job matches your skills before reading the full description.
We are a decentralized finance (DeFi) project on the brink of unveiling an on-chain derivatives trading venue (DEX). We aim to bring the largest asset class in traditional Finance into the blockchain ecosystem. Our products are designed to cater predominantly to professional and sophisticated retail traders in the crypto ecosystem. We have recently closed a sizable funding round led by a leading European VC and successfully launched a beta. Our team is distributed between London (business) and Lisbon (engineering).
We seek a highly experienced and talented Full Stack Developer (Backend / Blockchain Focus) to join our team. Currently, we are focusing our search on professionals based in Lisbon, Portugal. We offer an opportunity to join a well-funded project early in its lifecycle and apply your skills and knowledge to become a major driving force behind its success. While this is not a requirement, as we cater to the sophisticated traders’ community, we will prioritize professionals with experience in building trading technology.
Your Responsibilities
Hiring Manager Interview
Interview with the Backend Lead. Discussion about experience and candidates goals.
Technical Interview
20 Minutes technical interview/chat. (No live coding required)
Skills: jvm,angular.js,javascript,blockchain,defi,node,backend development,typescript,distributed systems,react.js,go (golang),graphql,go,solidity
We seek a highly experienced and talented Full Stack Developer (Backend / Blockchain Focus) to join our team. Currently, we are focusing our search on professionals based in Lisbon, Portugal. We offer an opportunity to join a well-funded project early in its lifecycle and apply your skills and knowledge to become a major driving force behind its success. While this is not a requirement, as we cater to the sophisticated traders’ community, we will prioritize professionals with experience in building trading technology.
Your Responsibilities
- Backend/Frontend Development & Security:
- Develop, maintain, and optimize backend services related to the protocol
- Ensure data consistency, fault tolerance, scalability
- Develop APIs for front-end consumption and third-party integrations
- Conduct thorough code reviews, vulnerability assessments, and penetration tests
- Stay updated with the latest security threats and ensure our protocol remains resilient against attacks
- Contribute to frontend development and support integrations of web3 frontends with backend and smart contracts
- Protocol Design & Smart Contract Development
- Design, develop, test, and deploy smart contracts on EVM Blockchains (Arbitrum, Ethereum, Optimism, Base, Polygon, others)
- Ensure all smart contracts are optimised, gas-efficient, and adhere to the highest security standards, incorporating the latest technologies and standards as they evolve
- Liaise with external audit firms for periodic reviews
- Collaboration & Leadership:
- Collaborate with the product and research teams to design novel DeFi products and services
- Work closely with other engineers, researchers, designers, and stakeholders to ensure smooth development
- Mentor junior developers and foster a collaborative and innovative development environment
- Provide clear documentation and training materials for the team
- Bachelor’s or Master’s degree in Computer Science or a related field
- Strong experience in backend development (JavaScript/TypeScript/Node, JVM, Go, GraphQL) and infrastructure
- Proven experience in developing smart contracts on Ethereum or other major blockchain networks, proficiency in Solidity and a deep understanding of the Ethereum Virtual Machine (EVM)
- Experience with frontend development (React.js, Angular.js, etc)
- Familiarity with centralized and decentralized oracles, layer 2 solutions, and cross-chain technologies
- Passion for blockchain, decentralization, and financial innovation combined with a knowledge of DeFi platforms, token standards, and existing DeFi products
- Strong attention to detail, especially in the areas of security and scalability
- Excellent communication skills, both verbal and written
- Contributions to a major DeFi project in trading, lending, and derivatives spaces
- Technical curiosity, experience with other blockchain platforms and technologies
- Other contributions to open-source blockchain projects
Hiring Manager Interview
Interview with the Backend Lead. Discussion about experience and candidates goals.
Technical Interview
20 Minutes technical interview/chat. (No live coding required)
Skills: jvm,angular.js,javascript,blockchain,defi,node,backend development,typescript,distributed systems,react.js,go (golang),graphql,go,solidity
Post Date
2025-03-01
Job Type
-
Employment type
Full-time
Category
Engineering, Information Technology
Level
Mid-Senior
Country
Portugal
Industry
Business Consulting , Services ,
*******