Blockchain Jobs

• London
• On-site
• Lead · manages people

Lead the engineering direction for crypto savings and crypto-backed lending products, defining architecture and building scalable, secure distributed systems. This hands-on role combines production coding with leading a small team, making architectural decisions, mentoring engineers, and partnering with a Business Lead to turn product vision into reliable systems.

Kafka · PostgreSQL · Redis +3

• London
• Hybrid · 3 days in office
• Senior

Owns design and end-to-end delivery of features across the Prime team's institutional prime brokerage platform, spanning backend services for settlement, credit, lending and tokenized securities through to frontend and backoffice screens. Leads other engineers through high-ambiguity, correctness-critical work on systems that move real institutional money, with an on-call rotation.

Python · Django · Go +1

• United Kingdom
• Remote
• Permanent

Technical lead across the full customer journey, running discovery, demos and proofs of value with Sales, then owning post-sale configuration, deployment and tuning of blockchain analytics products. Works directly with banks, exchanges and payment processors on compliance, investigations and risk workflows, feeding field insights back to Product and Engineering.

Chainalysis · REST API · SQL +2

• London
• Remote
• Senior

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

• United Kingdom

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

• London
• On-site
• Director · manages people
• Permanent

Executive role owning the global cybersecurity strategy for a large crypto platform, reporting to the CTO and advising the Board. Leads Security Engineering, SOC and GRC teams, covering cloud and application security, incident response, custody systems and AI governance, with a focus on IPO and regulatory readiness.

GCP · AWS · HSM +6

• Birmingham
• Hybrid
• £95,000 – £140,000 pa
• Senior

Builds low-latency, high-throughput Rust services for a fintech and digital assets platform, owning critical components such as trading, market data, payments or core infrastructure. Involves end-to-end performance tuning across networking, concurrency and memory, plus distributed systems work, mentoring engineers and leading technical design discussions.

Rust · C++ · AWS +5

• London
• Hybrid
• Lead · manages people
• Permanent

Player-coach lead role owning a small data science team within the Intelligence function, setting direction, hiring, and running model governance while still writing code and reviewing methods. Work spans clustering, attribution, heuristics and labelling on large behavioural and on-chain datasets using Python, SQL, Spark or Databricks and AWS.

AWS · Spark · Databricks +1

• United Kingdom
• Remote
• Senior
• Permanent

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

• United Kingdom
• Remote
• Director · manages people
• Permanent

Owns the exchange layer underpinning every Kraken product: matching engine, core infrastructure, third-party custody, algo and API engines. Leads four to five product managers, partnered with an engineering manager, to consolidate multiple matching engines into one interface-agnostic stack, starting with US derivatives. Defines success metrics such as p99 latency, throughput and uptime while sequencing migration without disrupting live markets.

• United Kingdom
• Remote
• Senior
• Permanent

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

• London
• Hybrid
• Senior
• Permanent

Leads counter-terrorism financing investigations into cryptoasset use by terrorist actors and facilitation networks, validating exposure and attribution confidence. Builds typologies and detection logic, works across UN, US, UK and EU designation regimes, and briefs clients, regulators and public-sector partners. Requires OSINT, blockchain tracing and AI-assisted analysis.

Python · SQL

• London
• Hybrid · 3 days in office
• Senior

Build and run the AWS infrastructure behind crypto custody, key management and blockchain node operations, writing Python services for wallet operations and owning third-party custodian integrations. The role sits at the boundary of infrastructure and security, covering Kubernetes and Docker deployments, Terraform/Ansible automation, and Prometheus/Grafana monitoring, with on-call rotation. Based in London with at least three days a week in office.

AWS · Ansible · Terraform +7