Senior Backend Developer – Rust / C++ / Python / Java

About Justera Group Justera Group AB is a leading Swedish IT consulting firm with great experience specializing in building high-performing technology teams and delivering end-to-end IT solutions. Led by dynamic female executives, Justera Group focuses on helping businesses harness the power of digital technologies to continuously evolve in today’s rapidly changing economy. The company has deep expertise in IT consultancy, software development, and recruitment services, providing clients with purpose-driven, well-trained consultants who consistently deliver efficient and effective results. Justera Group manages the entire talent lifecycle, from hiring to ongoing management, ensuring the right fit for each project on time and within budget. With their strong commitment to quality, collaboration, and client success, Justera Group is a trusted partner for technology innovation across Sweden. About the Role: We are looking for an experienced Senior Backend Developer to join a team responsible for developing and maintaining high-performance media delivery and processing solutions. In this role, you will work on backend services that determine how media content is processed, packaged, and delivered to different devices. You will contribute to adaptive streaming solutions, optimize media processing workflows, and ensure content is efficiently distributed through Content Delivery Networks (CDNs). This is an excellent opportunity for a developer who enjoys working across different technologies, navigating complex codebases, and collaborating with multiple engineering teams. You should be comfortable working independently, adapting to new environments, and influencing technical decisions. Key Responsibilities: Design, develop, deploy, maintain, and support backend media processing and packaging services. Build scalable, reliable, and high-performance backend solutions. Work primarily with Rust, Python, and Java, leveraging C/C++ libraries where needed. Develop and optimize services running on Google Kubernetes Engine (GKE). Take operational ownership of services, ensuring reliability, performance, and maintainability. Work with media technologies, including video and audio processing, transcoding, and adaptive streaming. Optimize high-throughput processing pipelines for performance and resource efficiency. Collaborate with engineering teams and contribute to technical architecture and design decisions. Ensure services are observable, scalable, and cost-efficient in a cloud environment. Requirements: Proven experience developing or operating media delivery systems. Strong understanding of adaptive and segmented streaming, media packaging, and transcoding. Practical knowledge of video and audio codecs, including H.264, HEVC, AV1, and AAC. Experience with media containers and streaming formats such as MP4, MPEG-TS, HLS, and DASH. Proficiency in a systems-level programming language such as Rust or C/C++. Strong backend development experience, ideally with Python and/or Java. Experience developing and operating production backend services at scale. Familiarity with Google Kubernetes Engine (GKE) and cloud-native environments. Understanding of high-throughput pipelines, performance optimization, monitoring, and observability. What We Offer: A dynamic and innovative workplace driving advancements in cutting-edge robotic technologies The opportunity to collaborate with talented cross-functional teams on meaningful and impactful projects Competitive compensation and comprehensive benefits package A supportive culture that fosters continuous learning, growth, and professional development Flexible hybrid working model for an optimal work-life balance 25 days of annual leave to recharge and relax An annual wellness allowance of 3,500 SEK to support your health and wellbeing