Backend Engineer (Node.js)

About This Role

As a Backend Engineer, you'll own critical platform services including our bidding engine, payment processing integrations, notification pipeline, and provider matching algorithms. You'll work in a microservices environment on AWS with a focus on reliability, security, and performance.

What You'll Do

• Design RESTful and GraphQL APIs consumed by web and mobile clients
• Own the bidding and matching engine for our marketplace
• Integrate payment providers (Stripe, bank transfers)
• Implement real-time features using WebSockets and message queues
• Ensure 99.9% uptime through proactive monitoring and alerting
• Define and enforce API contracts with frontend teams

Requirements

• 5+ years of back-end engineering experience
• Expert-level Node.js and Express knowledge
• Deep understanding of PostgreSQL (indexes, CTEs, transactions)
• AWS experience: EC2, RDS, Lambda, SQS, S3
• Security-first mindset (OWASP, JWT, rate limiting)

Nice to Have

• Experience with Kafka or RabbitMQ
• Knowledge of payment gateway integrations
• Background in marketplace or two-sided platform businesses

What We Offer

• Remote-first, flexible working culture
• Competitive salary with performance bonuses
• Comprehensive health & dental insurance
• €1,500/year personal learning & development budget
• 28 days paid holiday + public holidays
• Stock option plan for senior roles
• Home office setup allowance (€500)
• Team retreats twice a year across the Baltics

Skills Required