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Step into RedStone – the fastest-growing blockchain startup – as a Backend Developer &##RedStone is a fast-growing Polish blockchain startup revolutionizing oracle infrastructure. With our 45+ person team, including over 50% senior engineers, we deliver scalable, secure, and low-latency off-chain data to smart contracts across multiple chains. We’ve secured over $6B in TVS, raised $15M in Series A funding, and were recognized by Forbes as the top VC-backed startup in Poland. Backed by leading Web3 names like Arrington Capital, Stani Kulechov (Aave), and Gnosis, our team includes alumni from Google, OpenZeppelin, and major crypto projects. We work remotely across time zones, with a Warsaw HQ for deep work and collaboration. &##Our current goal is to expand our technical team with new developers, which is why our job posting is continuously renewed. As a Senior Backend Engineer at RedStone, you’ll take ownership of core components powering our oracle infrastructure — including data-fetching, aggregation, and verification pipelines, as well as blockchain node integrations and monitoring. This is a unique opportunity to join a rapidly growing team and make a real impact on the future of DeFi and cross-chain data availability. TypeScript, Go, Rust, Node.Js, AWS (CloudFront, EC2, ECS, Lambda, CloudWatch), Terraform, GCP, GitHub (with Actions for CI/CD), MongoDB, InfluxDB/Grafana, Solidity/Yul. Knowledge of multi-layer web architecture patterns and various network architectures Practical knowledge of async/event-driven frameworks for data processing Background in blockchain technologies and protocols, especially within DeFi Hands-on experience running blockchain nodes and working with modular blockchain architecture (e.G., Fully remote or hybrid (center of Warsaw) Private healthcare & Multisport card Flexible hours & pre-agreed paid service breaks Regular team off-sites, hackathons, and Web3 conferences Technical interview – You’ll meet with our developers to discuss your experience, skills, and approach to problem-solving. Final conversation – You’ll have a conversation with our co-founders about your expectations, working style, and how we can best support your growth. After that, you’ll complete a second technical task — a live coding session.