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Context Labs BV

Senior Backend Engineer – System Services

Context Labs BV

. Lead the services engineering team as a hands-on technical authority, providing architectural and development guidance .

Posted 10/23/2026full-timeAmsterdam • NetherlandsSeniorWebsite

Tech Stack

Tools & technologies
ApacheDockerErlangJavaKafkaKubernetesMicroservicesMySQLNoSQLPostgresRustSpringC++Go

About the role

Key responsibilities & impact
  • Lead the services engineering team as a hands-on technical authority, providing architectural and development guidance
  • Design, develop, and maintain APIs and platform services for the Immutably™ Platform
  • Ensure scalable, performant, and maintainable solutions
  • Translate business requirements into technical designs, estimates, and development tasks with Product and Engineering
  • Establish engineering best practices through code, architecture, documentation, and code reviews
  • Collaborate within an Agile development environment to deliver high-quality software
  • Mentor and coach engineers and help resolve technical and methodological challenges
  • Coordinate development efforts across distributed teams and multiple time zones
  • Perform other duties as reasonably required by the company

Requirements

What you’ll need
  • Strong full-stack development experience with an end-to-end understanding of modern application architectures
  • Expertise in distributed, peer-to-peer, and distributed ledger systems, including consensus algorithms and smart contracts
  • Experience with distributed protocols and patterns such as RAFT, BFT, Gossip, DHT, CRDT, Event Sourcing, CEP, and CQRS
  • Strong knowledge of cryptography and application security, including hashing, digital signatures, encryption, and data integrity/confidentiality practices
  • Proficiency with Java frameworks such as Spring, Quarkus, and Helidon
  • Experience with Docker-based microservices and Kubernetes
  • Strong database experience across relational, NoSQL, and NewSQL technologies, including MySQL, PostgreSQL, Apache CouchDB, CockroachDB, FoundationDB, and Kafka
  • Proficiency in unit/functional testing and source code management
  • Strong problem-solving, communication, and attention to detail, with the ability to balance architectural strategy with hands-on execution
  • Experience with functional programming
  • Experience with logic programming
  • Experience with languages other than Java, such as Rust, Go, Erlang, Zig, or C++
  • Experience with Streambase, Voldemort, Accumulo, Aerospike, VoltDB, or Kafka
  • Bachelor’s degree in computer science or related field is listed as preferred experience

Benefits

Comp & perks
  • Continuous learning and discovery
  • Reasonable accommodation for individuals with disabilities
  • Benefits and privileges of employment