Runware

Lead design and implementation of core AI platform backend systems and APIs, optimizing performance and scalability. | Deep experience in distributed high-performance backend systems, strong PHP or Go skills, and excellent communication for collaboration. | We’re looking for a Senior Software Engineer who thrives on turning ambitious ideas into production systems that delight developers and deliver real business impact. You’ll work across the stack, from backend APIs and orchestration to SDKs, dashboards, and developer tools. You’ll take ownership from start to finish, understanding user needs, designing elegant solutions, and delivering outcomes that make building with AI faster, simpler, and more creative. You’ll collaborate across the company to build systems that are robust, performant, and a joy to work on. This role combines technical depth, product intuition, and leadership, making it ideal for engineers who want to shape both how things are built and why they matter. Is this role a fit for you? You are motivated by impact. You thrive on transforming complex AI systems into products that developers love to use. You think holistically about architecture, user experience, and business outcomes, and you take pride in delivering systems that are both elegant and dependable. You are equally comfortable designing APIs, building scalable backend services, and improving developer-facing experiences. You set a high bar for quality, mentor others to reach it, and drive alignment between product ambition and technical reality. What this role could entail Lead the design and implementation of core systems powering Runware’s AI platform Build and evolve backend APIs, SDKs, and developer tools that make AI integration seamless Integrate and optimise image and video models while supporting new modalities such as audio and custom LLMs Architect scalable, reliable systems for inference orchestration and workload optimisation Partner with platform and infrastructure teams to drive performance, reliability, and observability improvements Shape technical direction through architectural discussions and long-term planning Mentor engineers through code and design reviews, fostering technical excellence and growth Contribute to documentation, tooling, and SDKs that enhance the overall developer experience Drive initiatives that improve how we build, deploy, and maintain our platform Deep experience building distributed and high-performance systems Strong programming skills in PHP or Go Proven track record of designing and delivering scalable backend systems and APIs Understanding of asynchronous workloads, queues, and streaming data Experience working with cloud and bare-metal infrastructure Excellent grasp of system design, performance optimisation, and scalability principles Clear communicator who leads technical projects and collaborates effectively across teams Passionate about mentoring others and raising engineering standards Proactive problem-solver who balances short-term progress with long-term vision European time zone We’re a remote-first collective, meeting in person twice a year to plan, brainstorm, celebrate wins, and enjoy some face-to-face time. We have core hours for cooperative working and calls, but outside of that your calendar is yours. Work the hours that let you perform at your peak while also building a healthy life. Our release cycles are fast and intense, but they’re followed by real downtime. After big pushes we expect the team to unplug, recharge, and come back ready & stronger than ever for the next leap. Generous paid time off – vacation, sick days, public holidays Meaningful stock options – share in the upside you create Remote-first setup – work from home anywhere we can employ you Flexible hours – own your schedule outside core collaboration blocks Family leave – paid maternity, paternity, and caregiver time Company retreats – twice-yearly gatherings in inspiring locations

Lead design and implementation of scalable backend systems and developer tools for an AI platform. | Deep experience with distributed systems, proficiency in PHP or Go, and mentoring engineering teams. | We’re looking for a Senior Software Engineer who thrives on turning ambitious ideas into production systems that delight developers and deliver real business impact. You’ll work across the stack, from backend APIs and orchestration to SDKs, dashboards, and developer tools. You’ll take ownership from start to finish, understanding user needs, designing elegant solutions, and delivering outcomes that make building with AI faster, simpler, and more creative. You’ll collaborate across the company to build systems that are robust, performant, and a joy to work on. This role combines technical depth, product intuition, and leadership, making it ideal for engineers who want to shape both how things are built and why they matter. Is this role a fit for you? You are motivated by impact. You thrive on transforming complex AI systems into products that developers love to use. You think holistically about architecture, user experience, and business outcomes, and you take pride in delivering systems that are both elegant and dependable. You are equally comfortable designing APIs, building scalable backend services, and improving developer-facing experiences. You set a high bar for quality, mentor others to reach it, and drive alignment between product ambition and technical reality. What this role could entail Lead the design and implementation of core systems powering Runware’s AI platform Build and evolve backend APIs, SDKs, and developer tools that make AI integration seamless Integrate and optimise image and video models while supporting new modalities such as audio and custom LLMs Architect scalable, reliable systems for inference orchestration and workload optimisation Partner with platform and infrastructure teams to drive performance, reliability, and observability improvements Shape technical direction through architectural discussions and long-term planning Mentor engineers through code and design reviews, fostering technical excellence and growth Contribute to documentation, tooling, and SDKs that enhance the overall developer experience Drive initiatives that improve how we build, deploy, and maintain our platform Deep experience building distributed and high-performance systems Strong programming skills in PHP or Go Proven track record of designing and delivering scalable backend systems and APIs Understanding of asynchronous workloads, queues, and streaming data Experience working with cloud and bare-metal infrastructure Excellent grasp of system design, performance optimisation, and scalability principles Clear communicator who leads technical projects and collaborates effectively across teams Passionate about mentoring others and raising engineering standards Proactive problem-solver who balances short-term progress with long-term vision European time zone We’re a remote-first collective, meeting in person twice a year to plan, brainstorm, celebrate wins, and enjoy some face-to-face time. We have core hours for cooperative working and calls, but outside of that your calendar is yours. Work the hours that let you perform at your peak while also building a healthy life. Our release cycles are fast and intense, but they’re followed by real downtime. After big pushes we expect the team to unplug, recharge, and come back ready & stronger than ever for the next leap. Generous paid time off – vacation, sick days, public holidays Meaningful stock options – share in the upside you create Remote-first setup – work from home anywhere we can employ you Flexible hours – own your schedule outside core collaboration blocks Family leave – paid maternity, paternity, and caregiver time Company retreats – twice-yearly gatherings in inspiring locations

Lead technical development of a serverless platform for AI workload execution and infrastructure management. | Strong senior-level experience in distributed backend systems with proficiency in Python or Go and infrastructure management. | We’re looking for a Staff/Senior Software Engineer to technically lead and build Runware’s serverless platform. You’ll be part of a small team working closely with senior leadership to bring a new product line to market. Runware is evolving beyond model APIs into a platform where developers can deploy models and run AI workloads without managing GPUs, servers or infrastructure. You’ll build the software layer that connects our proprietary high-performance sonic inference engine and turns complex infrastructure into a compelling developer experience. This is a role for someone who enjoys technical leadership, hard platform problems and clean, simple systems. Your work will help enterprises, model labs and developers move from idea to production faster, then scale without needing to build and operate the infrastructure themselves. What you’ll do Build the core systems behind Runware’s serverless platform, including workload execution, routing, scheduling, isolation and scaling leveraging our inference engine Make it simple for developers to deploy models and run AI workloads without managing GPUs, servers, queues or infrastructure through a simple SDK interface Design and improve the control plane for serverless execution, including APIs, workers, lifecycle management, retries and failure handling Work closely with our infrastructure and ML teams to improve workload startup time, GPU utilisation, model warm-up, caching and placement Build observability that makes serverless workloads easy to monitor, debug and operate at scale globally Lead the technical design, mentor other engineers and help define the engineering standards for a new product area Strong experience as a Staff Engineer, Senior Software Engineer, Backend Engineer, Platform Engineer or similar Experience building backend services, distributed systems, developer platforms or workload orchestration systems Strong understanding of async processing, queues, scheduling, retries, back pressure and failure handling Comfortable working across APIs, control planes, workers, databases and observability systems Strong engineering fundamentals in one or more backend languages such as Python, Go or similar Good judgement around trade-offs between reliability, latency, scale, cost and developer experience Clear communication, strong ownership and the ability to lead technical direction in a fast-moving environment Nice to have Experience building serverless platforms, job execution systems, container platforms or compute orchestration systems Experience with GPU-backed workloads, AI/ML inference, model serving, batch processing or high-performance compute Familiarity with technologies such as vLLM, TensorRT, Triton, Kubernetes, Nomad or Knative Experience improving workload performance through batching, autoscaling, model warm-up, caching, request routing or queue management Experience with multi-tenant isolation, sandboxing, quotas, rate limits, resource accounting or usage-based billing We’re a remote-first collective, meeting in person twice a year to plan, brainstorm, celebrate wins, and enjoy some face-to-face time. We have core hours for cooperative working and calls, but outside of that your calendar is yours. Work the hours that let you perform at your peak while also building a healthy life. Our release cycles are fast and intense, but they’re followed by real downtime. After big pushes we expect the team to unplug, recharge, and come back ready & stronger than ever for the next leap. Generous paid time off – vacation, sick days, public holidays Meaningful stock options – share in the upside you create Remote-first setup – work from home anywhere we can employ you Flexible hours – own your schedule outside core collaboration blocks Family leave – paid maternity, paternity, and caregiver time Company retreats – twice-yearly gatherings in inspiring locations