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Senior Full Stack Engineer
About On The Spot
About the team
Hypernative builds real-time Web3 security infrastructure, protecting protocols, chains, wallets, and institutions from on-chain threats before damage occurs.
Our platform operates in highly adversarial, high-scale environments — processing billions of blockchain events across multiple chains using big data, AI, and real-time monitoring systems.
We’re a fast-growing, well-funded startup building critical infrastructure for the future of digital assets.
About the role
We’re looking for a Senior Full Stack Engineer to take ownership of core product experiences and drive end-to-end feature development across our platform.
This is a high-impact role at the intersection of product, architecture, and execution - ideal for engineers who enjoy building complex systems and delivering user-facing value.
You’ll work across the stack - from backend services and APIs to frontend applications - helping shape both the user experience and the underlying architecture.
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Responsibilities
- Own the end-to-end development of major features — from design to production
- Design and implement scalable backend services and APIs
- Build high-quality, performant frontend applications (React-based)
- Collaborate closely with Product, Design, and Security teams to deliver impactful features
- Contribute to system architecture, scalability, and performance decisions
- Ensure high standards for code quality, testing, and observability
- Take part in shaping the product during a critical growth stage
Requirements
- 5+ years of experience in software engineering, including full-stack development
- Strong experience with JavaScript/TypeScript, including:
- Backend: Node.js
- Frontend: React
- Experience designing and building production-grade systems
- Solid understanding of system design, APIs, and distributed systems
- Experience working with cloud platforms (AWS preferred)
- Familiarity with CI/CD pipelines and modern development workflows
- Strong communication skills and ability to work cross-functionally
Nice to have
- Experience in Web3 / blockchain / fintech / security domains
- Experience working in high-scale, real-time systems
- Experience with data pipelines or event-driven architectures
- Previous experience in startups or fast-scaling environments
- Work on real-time systems protecting billions in assets
- Be part of a core engineering team shaping the product and architecture
- Solve complex, high-impact problems in Web3 security
- Join a fast-moving team with strong ownership and impact
Benefits
- Work in a highly professional team with informal and friendly atmosphere
- Paid vacation — 20 business days per year, 100% sick leave payment
- Equipment provision
- Partially compensated educational costs (for courses, certifications, professional events, etc.)
- Legal and Accounting support in Poland
- Ability to work from our comfortable office in Warsaw at Prosta 51
- 5 sick days per year
- Medical insurance (after the end of the probationary period)
- Flexible working hours — we care about you (!) and your output
- English and Polish classes 2 times a week (online)
- Bright and memorable corporate life: corporate parties, gifts to employees on significant dates
Join us
Contribute to our growth
Know someone perfect for this role? Let us know about them. We have a referral program to recognize your support.