Arrows Group

Scala Developer Senior Scala Engineer - Scala - paying up to £650/day (Inside IR35) - Hybrid (2x a week - London) - 6 month contract The role: * Build and maintain Back End services that move and integrate data * Create reliable, secure and observable software with strong automation * Help define requirements and shape technical solutions * Contribute to overall engineering direction * Support and mentor team members What you'll need: * Strong commercial experience delivering complex applications * Solid Scala skills (experience with similar ecosystems beneficial) * Exposure to Docker, Kubernetes and cloud environments * Strong TDD mindset and CI/CD experience * Comfortable working in an Agile setup and collaborating closely with others * A team-focused, lead-by-example approach Additional skills: Scala + React/TypeScript * Experience building modern Front End applications Scala + AI * Experience building AI agents using relevant frameworks * Understanding of LLMs, RAG, tool-building, etc. * Ability to design automations and improve processes using AI If you're excited to work in a fast-paced environment where engineers lead innovation - we'd love to hear from you.

Senior Performance Tester - Non-functional - 3 month contract - paying £550 Inside IR35 - Hybrid (2 days a week) We're looking for an experienced Senior Performance Tester to join a high-performing team working on a global streaming platform that powers millions of users across video-on-demand and live services. What you'll do: Develop and maintain a Gatling-based performance testing framework integrated into CI/CD pipelines. Define non-functional requirements and performance acceptance criteria. Analyze performance test results and production metrics to identify trends, risks, and improvements. Work with modern technologies including Docker, Kubernetes, Kafka, and NoSQL databases. Mentor junior testers and drive continuous improvement in performance testing practices. What we're looking for: 5+ years' experience in non-functional/performance testing for large-scale applications. Hands-on experience with Gatling and open-source performance tools. Strong knowledge of CI/CD tools (Jenkins, GitHub Actions, Gradle/Maven). Skilled in monitoring/logging with Prometheus and Grafana. Proficiency in Scripting languages (Scala, Python, Shell). This role offers the chance to make an impact on a global platform, work with cutting-edge tech, and collaborate with a talented cross-functional team.