Senior Backend Engineer - Stellar Ecosystem

Location: EMEA / EU

Hours – Authorized to work in EMEA. Remote: Full-time.

Compensation: €90K – €130K.

Our client is a high-growth fintech leader specializing in simplifying multi-chain DeFi. They offer a unified API that provides seamless access to on‑chain liquidity across major blockchains for optimized same‑chain and cross‑chain swaps. Their mission is to enable a fairer, decentralized world while prioritizing exceptional user experiences.

The organization seeks multiple Senior Backend Engineers to lead the design, development, and maintenance of robust, scalable, and secure backend systems. Candidates will report to the Backend Lead and collaborate with cross‑functional teams to deliver high‑quality software solutions. The technical stack includes Node.js (TypeScript), MongoDB, Redis, ethers.js, with a GitOps CD chain involving Kubernetes and AWS.

Key Responsibilities

• Lead and participate in the design, development, and maintenance of backend systems and APIs.
• Architect and implement robust backend solutions capable of handling increasing user loads and evolving business requirements.
• Maintain high coding standards, conduct thorough code reviews, and enforce best practices for maintainability and readability.
• Identify system bottlenecks and optimize code and algorithms to improve overall performance.
• Implement monitoring and debugging tools to proactively identify and resolve issues, ensuring high system availability.
• Develop comprehensive test suites—including unit, integration, and end‑to‑end tests—to ensure backend reliability.
• Provide guidance to junior developers to foster technical growth within the team.
• Document code, APIs, and technical processes to facilitate knowledge sharing and streamline onboarding.

Interview Process

• Initial Screening: Recruiter / HR Call
• Hiring Manager Interview: Discussion with the Backend Lead
• Technical Assessment: Take‑Home Test
• Technical Deep‑Dive: Technical Interview
• Cultural Alignment: Group Interview

Requirements

• Location: Candidates must be located in the EMEA or APAC regions.
• Strong professional experience with TypeScript and Node.js is required.
• Proven experience working with the Stellar network in production environments.
• Previous experience in the blockchain space with a technical understanding of the EVM ecosystem (or other blockchain environments).
• Familiarity with Stellar’s Soroban smart contracts is a significant plus.
• Extensive professional experience in a similar senior or lead role.
• Solid understanding of document databases (MongoDB), caching mechanisms (Redis), and system architecture design.
• Excellent analytical, problem‑solving, and communication skills.
• Ability to work autonomously and collaboratively in a proactive manner.
• A Bachelor’s or Master’s degree in Computer Science is considered a plus.
• Very strong written and verbal English skills for effective stakeholder communication.

Our Client's Culture

• Embracing Differences: Valuing unique qualities and viewing individual differences as opportunities for team growth.
• Ownership and Execution: Every team member owns tasks end‑to‑end and holds themselves to a high bar for execution and accountability.
• Failing Forward: Innovation requires courage; the team is encouraged to try new things, learn from mistakes, and adapt quickly.
• Collaborative Fun: Beyond the tech, the team prioritizes getting to know one another, maintaining a light‑hearted environment rooted in love and respect.

Benefits

• Compensation: Competitive salary range of €90,000 – €130,000 EUR, plus equity participation from day one.
• 30 days of Paid Time Off (PTO).
• Flexible remote work days and flexible working hours.
• Annual team offsites (previous locations include Thailand, Vietnam, and Marrakech).
• Choice of work computer and hardware.
• Annual €1,000 personal development budget (after 6 months of tenure).
• A one‑time €1,000 remote work budget for office setup or coworking expenses.

Note: Candidates joining as independent contractors are entitled to the first five benefits listed above.

Commitment To Equality And Accessibility: At MLabs, we are committed to offering equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and provide information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or would like to see the job advert in an accessible format, please let us know at the earliest opportunity by emailing human‑resources@mlabs.city.