Senior Backend Engineer

Location: EMEA / EU Hours - Authorised to work in EMEA

Remote | Full-time

Compensation: €90K - €130K

Our client is a high-growth fintech leader specializing in simplifying multi-chain DeFi for traditional financial institutions, fintechs, and service providers. By offering a unified API, the platform provides seamless access to on-chain liquidity across all major blockchains for optimized same-chain and cross-chain swaps. The organization is on a mission to enable a fairer, decentralized world while prioritizing exceptional user experiences to make complex technologies accessible to a global audience.

The organization is seeking multiple Senior Backend Engineers to lead the design, development, and maintenance of robust, scalable, and secure backend systems. Reporting to the Backend Lead, the successful candidates will collaborate with cross-functional teams— including frontend developers, product managers, and designers—to deliver high-quality software solutions. The technical environment utilizes a modern stack including Node.js (TypeScript), MongoDB, Redis, and ethers.js, supported by a GitOps CD chain involving Kubernetes and AWS.

Key Responsibilities

System Leadership: Lead and participate in the design, development, and maintenance of backend systems and APIs
Scalable Architecture: Architect and implement robust backend solutions capable of handling increasing user loads and evolving business requirements
Quality Standards: Maintain high coding standards, conduct thorough code reviews, and ensure best practices for maintainability and readability
Performance Optimization: Identify system bottlenecks and optimize code and algorithms to improve overall performance
Proactive Monitoring: Implement monitoring and debugging tools to identify and resolve issues proactively, ensuring high system availability
Testing & Reliability: Develop comprehensive test suites—including unit, integration, and end-to-end tests—to ensure backend reliability
Mentorship: Provide guidance to junior developers to foster technical growth within the team
Documentation: 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
Technical Expertise: Strong professional experience with TypeScript and Node.js is required
Stellar Experience: Proven experience working with the Stellar network in production environments
Blockchain Background: 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
Seniority: Extensive professional experience in a similar role at a senior or lead level
Infrastructural Knowledge: Solid understanding of document databases (MongoDB), caching mechanisms (Redis), and system architecture design
Soft Skills: Excellent analytical, problem-solving, and communication skills. Ability to work both autonomously and collaboratively in a proactive manner
Education: A Bachelor's or Master's degree in Computer Science is considered a plus
Language: Very strong written and verbal English skills for effective stakeholder communication

Our Client's Culture

Our client operates on a foundation of mutual respect, high accountability, and continuous growth. They are looking for teammates who resonate with the following core values:

Embracing Differences: Our client values unique qualities and views individual differences as an opportunity for the entire team to grow
Ownership and Execution: Every team member is expected to own their tasks end-to-end, holding 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 without repeating them, 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

Our client offers a comprehensive package designed to support a high-performing, remote-first team:

Compensation: Competitive salary range of €90,000 - €130,000 EUR, plus equity participation from day one
Time Off: 30 days of Paid Time Off (PTO)
Flexibility: Flexible remote work days and flexible working hours
Offsites: Annual team offsites (previous locations include Thailand, Vietnam, and Marrakech)
Equipment: Choice of work computer and hardware
Allowances: * An 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.

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing 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 you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing [HIDDEN TEXT].

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Senior Backend Engineer - Stellar Ecosystem