Lead Backend Engineer

On the technical side, you’ll take charge of a high-traffic Ruby on Rails platform and power ongoing feature development while modernising the architecture. You’ll lead key initiatives such as improving performance and reliability, introducing better caching and data flows, and supporting real-time features at scale on AWS.

Your tasks will include

Lead and mentor a team of mid/senior backend engineers (4–5), including 1:1s, feedback, and performance management

Translate product and business goals into clear technical roadmaps, sprint plans, and backend priorities

Own the backend architecture and technical vision for mobile-first, consumer-facing apps used by tens of thousands of daily active users

Drive and oversee implementation of new features for our mobile apps, working closely with iOS/Android, Product, Data, DevOps and Trust & Safety teams

Take key architectural decisions around scalability, performance, reliability, data flows, and infrastructure on AWS

Identify and resolve performance bottlenecks, improve API speed and reliability, and design effective caching and database strategies

To be a good fit for the Lead Backend Engineer role:

8+ years of professional backend development experience in production environments and most recent experience in leading a backend teams

Proven experience owning backend architecture for a mobile-first, consumer-facing app

Strong hands-on expertise with Ruby On Rails

Experience building and scaling high-traffic systems (Over 10k+ daily active users) with a focus on performance and reliability

Solid understanding of distributed systems, relational databases, caching, and performance optimization

Practical experience working in the cloud (preferably AWS) and collaborating closely with DevOps / infrastructure engineers

Offers

Fully Remote Role with flexible working hours (core collaboration typically in European daytime)

30k USD bonuses (seasonal + EOY, dependant on individual and company performance)

Work on high-impact, high-scale mobile products (millions of downloads) in a profitable, growing startup

Strong engineering culture: open-minded, low-ego, direct communication, and high ownership

Access to company-provided AI tools (e.g. ChatGPT, Claude, Cursor company accounts) to boost your productivity

27 days of paid vacation (15 days of personal leave + 12 days of public holidays following your local country calendar)

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Skills

• Ruby on Rails
• AWS
• Backend development
• Distributed systems
• Relational databases
• Caching
• Performance optimization