Mid/Senior Backend Developer

Step into RedStone – the fastest-growing blockchain startup – as a Backend Developer

The salary for this role (B2B contract):

• mid: 20 000 - 30 000 PLN + VAT
• senior: 30 000 - 40 000 PLN + VAT

About Us

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.

About the Role

Our current goal is to expand our technical team with new developers, which is why our job posting is continuously renewed. We're looking to hire more than one person.

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. You’ll work primarily with Rust-based systems, contribute to protocol design, and help expand our ecosystem support with a focus on high performance and reliability.

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.

Our stack includes: TypeScript, Go, Rust, Node.js, AWS (CloudFront, EC2, ECS, Lambda, CloudWatch), Terraform, GCP, GitHub (with Actions for CI/CD), MongoDB, InfluxDB/Grafana, Solidity/Yul. You don’t need to know all of these — familiarity with some is a plus.

Job Requirements

• At least 5 years of professional experience in software development
• Knowledge of multi-layer web architecture patterns and various network architectures
• Practical knowledge of async/event-driven frameworks for data processing
• Strong understanding of security best practices
• High attention to detail and diligence in all tasks
• Proven coding ability with a focus on writing readable and efficient software

Bonus Points

• Practical experience building distributed systems
• Background in blockchain technologies and protocols, especially within DeFi
• Hands-on experience running blockchain nodes and working with modular blockchain architecture (e.g., sidechains, rollups)
• Experience in the Solana ecosystem
• Participation in hackathons or programming competitions

What We Offer

• Fully remote or hybrid (Warsaw HQ at Zgoda 3)
• Competitive salary + token allocation (after 3 months)
• Private healthcare & Multisport card
• Flexible hours & pre-agreed paid service breaks
• Top-tier equipment (MacBook, external displays)
• Regular team off-sites, hackathons, and Web3 conferences
• Full ownership over your work
• A rare opportunity to build foundational infrastructure for the future of finance

Get to Know Us Better

• 🌐 Website
• 🧠 Docs
• 💻 GitHub
• 🐦 X

What’s Next?

Here’s what the recruitment process looks like:

• Initial call – One of our recruiters will reach out to get to know you better and answer any questions.
• 1st Technical interview – You’ll meet with our developer to discuss your experience. As part of the interview, you’ll complete an algorithmic task.
• 2nd Technical Interview – You'll take part in a live coding session to solve a problem and discuss your approach.
• Final conversation – You’ll have a conversation with our CEO about your expectations, working style, and how we can best support your growth.