5 jobs for “Web3 Developer”
Improbable Ltd.
Own the frontend product experience for a live decentralised exchange, shaping how it looks, feels and performs for traders. Beyond frontend engineering, you influence product decisions, architecture and the direction of future products, working with engineering, design and commercial teams in an early-stage venture.
React · Next.js · EVM +1
Circle
Lead technical solutioning for Payments and Enterprise customers across EMEA, owning discovery, architecture design, proof-of-concepts and post-sale implementation alongside Business Development, Product and Engineering. The role focuses on APIs, transaction flows, custody and settlement models for stablecoin and blockchain infrastructure, with up to 25% travel and structured market feedback into product roadmap.
USDC · Circle Payments Network · Arc
Chainalysis · 51–200 people · Series C
Owns and improves a Java Spring Boot data ingest service generating enriched transfers and aggregations, tuning PostgreSQL batching, indexing and replication. Also builds AWS API services handling thousands of requests per second, runs PoCs and benchmarks for next-generation architecture, and integrates LLM tooling into incident triage and self-healing pipelines.
PostgreSQL · Java Spring · Kafka +7
Fireblocks
Pre-sales role supporting EMEA sales directors with tailored product demos, workshops and Proof of Concepts for Fireblocks' digital asset infrastructure. You'll design technical solutions covering custody, tokenization, DeFi and blockchain transaction flows, lead RFP responses, and guide clients through onboarding onto MPC-based wallet infrastructure and APIs, working closely with Product, R&D and Security teams.
Fireblocks · MPC-based Wallet Infrastructure · APIs
Kraken · 501–1000 people · Late stage
Hands-on security architecture role embedded within engineering teams, designing and reviewing security for infrastructure, cryptography, web3, Rust and AI products. Conducts security assessments and audits, advises blockchain teams on secure operations, and works remotely across a small, highly technical internal consulting group.
Rust
