Top Software Engineer Jobs in Cologne

Build and maintain services and tooling to automate and secure network lifecycle across data centers. Implement CI/CD, staged rollouts, drift detection, observability pipelines, and APIs that integrate network source-of-truth with the cloud platform. Collaborate with network engineers and SREs to turn operational pain into production-grade automation and tooling.

Work on Percona's open-source MongoDB operational tools (primarily ClusterSync and also Backup). Build and harden a Go-based replication engine handling initial cloning and continuous change streams, ensure correctness and fault tolerance at scale, support sharded clusters, optimize performance and resource usage, and maintain CLI/HTTP APIs, metrics, logging, tests, and packaging. Collaborate openly via GitHub pull requests and JIRA.

Design, build, and operate backend systems that power the incident lifecycle: automated AI ingestion/detection agents, validation/conflation algorithms, and delivery APIs. Collaborate with cross-functional teams and MapGPT, test and monitor services, reduce technical debt, be on-call, and drive product-focused distributed systems at scale.

Lead design and development of native Windows desktop applications; ensure accessibility and performance; collaborate with teams on features and maintain coding standards.

Develop and maintain ClickHouse Cloud interfaces and dashboards, collaborating with cross-functional teams while ensuring code quality and scalability.

Develop core backend components for a blockchain network, focusing on networking, reliability, scalability, and high-quality software practices.

Develop and enhance front-end, server-side, and database applications, focusing on blockchain products while ensuring high performance and security.

Dragonfly is seeking Software Engineers for various portfolio companies, focusing on crypto technologies. Engineers of all experience levels are needed across multiple stacks.

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

The Senior Infrastructure Engineer will manage and scale LiveKit's core infrastructure, focusing on reliability and performance, while working on Golang code and automation for distributed systems.

Design and evolve core control, data, and observability systems; implement resilient region-spanning architectures; build libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, and testing; and shape platform capabilities across identity, scheduling, observability, and distributed state management.

Design, implement, and manage LiveKit's infrastructure, focusing on performance, reliability, and automation while ensuring effective incident management and coordination with vendors.

The role involves designing and evolving core systems at LiveKit, implementing resilient architectures, and building tools to enhance system reliability and developer speed. Strong distributed systems experience and programming skills are essential.

Design, implement, and operate low-latency, highly available distributed control, data, and observability systems. Build region-spanning architectures, libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, testing, and real traffic; and shape platform capabilities around identity, scheduling, observability, and distributed state management.

The role involves designing, developing, and operating high-throughput streaming data pipelines, ensuring system quality and performance, and collaborating with engineering leaders to enhance Mapbox's telemetry capabilities.

As a Staff Software Engineer, you will lead the development of Apache Iceberg, enhancing data handling capabilities for large-scale systems, collaborating with teams, and architecting solutions for modern data lakes.

The Staff Tech Lead Software Engineer will drive technical vision, mentor teams, oversee code quality, and facilitate collaboration between engineering and product teams.

Lead the development of Runware's serverless platform by building core systems for AI workload management and providing technical guidance to the team.

The Senior Software Engineer will design and implement systems for AI integration, build scalable backend services, and mentor team members, ensuring high-quality systems that meet user needs.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

Join a remote Europe-based senior C++ engineer talent pipeline to work on Windows PC games using custom engines or UE5. Maintain and develop game features and tools, collaborate with multidisciplinary teams, and regularly debug, profile, and optimize code. Must complete a technical test.

Build and operate Python services and APIs for GPU virtual machines and bare-metal infrastructure. Develop provisioning, placement, maintenance, recovery, capacity, and scheduling workflows; integrate GPU servers with OpenStack and Kubernetes; automate validation and production readiness; and improve testing, observability, deployment safety, and operational tooling. Investigate complex production issues across compute, networking, storage, virtualization, and hardware while owning projects through rollout and ongoing operation.

Design, build, and maintain highly available, durable, horizontally scalable backend services for a distributed streaming platform. Lead multi-month engineering initiatives, improve disaster recovery, implement operator tooling, collaborate on CI and DevOps, and participate in L3 support and on-call rotations to resolve production performance issues.

Design, build, and maintain full-stack applications for data ingestion, video content, and workforce tooling. Implement Angular front ends, Spring Boot/Kotlin or Java backends, and SQL-driven databases. Optimize queries, contribute to architecture, work with Product and Design, document work, and support the customer support team when needed.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.