Full-Stack Engineer (DeFi / Trading) - Hybrid Dubai / EU

Client of OnHires

What you ll do

• Build and scale decentralized trading products from web trading interfaces to Telegram trading bots and backend systems.

• Design and implement backend services & APIs for on-chain execution, routing, pricing, and risk logic.

• Work with smart contracts (Solidity) and on-chain data (indexing, explorers, mempool/tx decoding).

• Own the entire lifecycle: specification implementation deployment monitoring iteration.

• Touch the frontend (React/Next.js) enough to ship end-to-end.

• Handle pragmatic infrastructure work: deployments, debugging, performance tuning, reliability.

• Contribute to product thinking shaping features and prioritizing impact.
  
  

You are

• A Swiss-knife engineer comfortable switching between backend, frontend, infra, and on-chain work.

• Deep on fundamentals: data structures, scalability, performance, reliability, security mindset.

• Autonomous and fast-moving no need for micro-management.

• Startup-ready: prefer shipping over bureaucracy, communicate clearly, and take ownership.
  
  

Our client values exceptional ability over years of experience - they welcome both Strong-Middle and Senior engineers, as long as the technical depth is genuine.

Must-have

• Solid backend experience with TypeScript/Node.js, Python, Go, or Rust.

• Strong API design, data modeling, testing, and production debugging skills.

• Experience delivering in high-load or fast-paced environments (crypto, trading, or startups).

• Confident with databases (PostgreSQL or similar) handling large, fast-growing datasets.

• Hands-on DevOps mindset - containers, CI/CD, observability, deployments.

• Fluent English; French is a major plus.
  
  

Nice to have

• DeFi/Web3 background - Solidity, Ethers.js/Web3.js, DEXs, perps, launchpads, or on-chain analytics.

• Experience in trading systems (pricing, execution, routing, risk).

• React / Next.js front-end experience.

• Knowledge of AWS (ECS/EKS, S3, IAM), Grafana / Prometheus / Datadog / Sentry.

• Work with data pipelines for large blockchain datasets.

• Security awareness - keys, permissions, anti-MEV, safe deployments.
  
  

Why this role

• Impact & ownership: small senior team, direct collaboration with CEO & CTO.

• Strong upside: competitive pay + equity.

• Innovation space: decentralized trading, multi-chain indexing, real user scale.

• Lifestyle: mix of Europe & Dubai, travel and lodging fully covered during on-site months.
  
  

Hiring process

1. Pre-screen call (30 min) with recruiter - discussing your background, motivation, and technical breadth.

2. Profile review by CTO.

3. Intro call with CEO (5 10 min).

4. Technical interview with CTO - live discussion based on your real work (no take-home tests unless you prefer one).