Senior / Principal Akka Consultant

remote|b2b|up to 60€/hWe are looking for a Senior / Principal Akka Consultant for a short-term consulting project with a UK-based technology company in the utilities sector. The role focuses on performance analysis and optimization of a complex distributed system supporting electricity, gas, and water markets. The client’s systems handle tens of millions of metering points and process millions of records daily, requiring high performance, reliability, and scalability. This is ideal for an experienced freelancer ready to make a real impact on a critical production system.ResponsibilitiesConduct independent audits, profiling, and performance optimization of distributed systemsIdentify and eliminate bottlenecks, memory leaks, and CPU issuesRefactor technical debt and resolve architectural problemsModernize legacy code patterns, such as implementing Akka TypedImplement basic monitoring and improve observabilityMentor the client’s development team, guiding them in best practices for working with AkkaRequirements Must-HaveExtensive commercial experience in ScalaExpert knowledge of the Akka ecosystem, including Akka Actors (including older Classic 2.6.x versions), Akka Persistence, and Akka ClusterStrong skills in multithreading, dispatcher configuration, and serializationExperience in systems processing large volumes of background dataAbility to profile JVM applications (Java 8 / Java 11+)Consulting experience and independence - capable of acting as the main problem-solver, proactively delivering value, and advising on architectural solutionsExcellent communication skills in English, essential for daily collaboration with business and technical stakeholdersNice-to-HaveExperience with Akka 3 (Akka Workflows) or Apache PekkoKnowledge of AWS (EC2) for diagnosing infrastructure-level performance issuesProject DetailsLocation: 100% RemoteClient: UKRate: up to €60/hStart: ASAPEngagement: preferably full-time (minimum 0.5 FTE)Duration: 1–3 months, with possible occasional returns to the projectThis is an excellent opportunity for an experienced consultant or freelancer to join a technically challenging project and make a real impact on the performance of a critical production system. If this sounds like you, don’t hesitate – apply now!#J-18808-Ljbffr

Created: 2026-04-17