Top Software Engineer Jobs in Cologne

Run and evolve multi-cloud streaming and database infrastructure (100+ clusters), diagnose cross-layer failures, design safe rollouts, improve observability and automation, collaborate with platform and database teams, serve as on-call escalation and own vendor relationships.

Architect and implement scalable, robust systems for ML-driven scientific research. Build and optimize distributed data-processing and model-training pipelines on cloud or HPC with GPUs/tensor accelerators. Develop tools to train, optimize, and scale ML solutions, collaborate with scientists and engineers, document best practices, and maintain high code quality.

As a Senior Software Engineer, you will build and maintain SDKs, optimize performance, and deliver solutions for Speechify's product experience across platforms.

Develop and maintain C# applications, design robust solutions with the team, write unit tests and occasional end-to-end test plans, conduct code reviews, and diagnose and resolve technical issues to ensure code quality and reliability.

Drive performance and scale characterization for NVIDIA DGX Cloud across Kubernetes and NVIDIA components. Build automated tests, monitoring, and CI/CD for large-scale GPU-accelerated workloads. Triage and resolve distributed systems performance issues, collaborate with researchers and upstream open-source communities, and present findings at conferences.

Lead and own platform architecture across Infrahub ecosystem, implement high-impact architectural improvements, reduce technical debt, champion AI-first engineering, provide hands-on technical leadership, mentor engineers, and collaborate with product and leadership to ensure scalable, extensible systems.

Own and improve core scraping and job-execution infrastructure for high-throughput distributed workloads. Design fault-tolerant, observable systems, lead reliability and scaling efforts, define SLAs, run incident response, mentor engineers, and contribute to architecture decisions to maximize throughput and platform availability.

Build and architect Alpaca's advisory services (block trading, portfolio management, IRA). Design scalable, low-latency distributed systems, write full-stack code, optimize throughput, work with messaging systems and OMS, and implement high-availability, concurrency-safe solutions for financial trading/exchange workloads.

The Senior Software Engineer will develop AI-powered recruiting products using Python, manage microservices, build RESTful APIs, and collaborate with teams on scaling applications.

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

Build and maintain core post-trade clearing systems and securities-finance infrastructure. Own projects end-to-end, design reliable distributed services and RESTful APIs, integrate new clearing partners, participate in on-call rotation, and improve systems to enable new product offerings.

Build and own end-to-end features across Sona’s platform using AI-assisted development. Direct and correct agent-produced code, work cross-functionally, engage customers in discovery and workshops, and contribute across scheduling, payroll, HR, and mobile domains.

Develop, enhance, and maintain a large-scale enterprise case management application in C++. Implement new features, work with Oracle/SQL, support document generation and data processing, troubleshoot defects, participate in builds/releases, use JIRA, and collaborate with Product Owners, QA, and Release Management in an Agile environment.

Seeking a Senior Software Engineer to build AI inference systems. Responsibilities include optimizing GPU kernels, architecting inference stacks, and defining benchmarking methodologies. Requires strong programming skills and experience in ML systems.

Lead the development of software solutions for a logistics platform, overseeing technical strategy, mentoring teams, and ensuring high-quality software delivery.

As a Senior Engineer at Mapbox, you will design, develop, and operate the routing services within their API, focusing on scalability, monitoring, and collaboration across teams, while using AI in engineering workflows.

Develop and maintain Windows agent software for banking applications, writing new components in Rust and maintaining C++ legacy code. Collaborate with designers, frontend developers, and product managers, participate in agile ceremonies, perform code reviews, and ensure CI/CD integration and high-quality, well-documented production code.

Lead architecture, implementation, and operation of a cloud-native 5G Standalone core. Design and run core network functions, roaming signaling, and service-based interfaces. Build for high availability on AWS/Kubernetes, mentor teams, and troubleshoot production telecommunications systems.

Design, build, and run end-to-end partner integrations for ClickHouse Cloud: own architecture (auth, multi-tenancy, data movement), implement CI/deployments, operate production systems, collaborate with partner platforms and internal teams, write design docs, and be on-call for your services.

Design, build, and operate scalable backend components and APIs for regulated digital health products. Collaborate with cross-functional teams to deliver features, ensure architecture, code quality, security, and mentor engineers while supporting cloud-native, containerized deployments.

Design and develop services for automating work with a large server fleet while engaging in DevOps processes.

Develop reliable cloud services on the hyperscaler platform, contributing to cloud infrastructure, databases, and monitoring systems. Must write reliable code with team-oriented skills.

Design and develop services for monitoring servers, improve metrics pipelines, automate maintenance workflows, and investigate incidents to ensure infrastructure reliability.

Lead architecture and technical initiatives for Mapbox's Android Navigation SDKs, design developer-friendly APIs, implement cross-SDK features, mentor engineers, and perform hands-on development, debugging, profiling, and performance optimization to deliver high-quality navigation experiences.

Lead development and scaling of data processing pipelines for road and navigation products. Design and implement new pipelines, monitor performance metrics, and enforce security best practices. Collaborate within a cross-functional team to build high-quality, distributed data systems supporting mapping and navigation features.