Senior Software Engineer - Research Tooling in London

DeepL is a global AI product and research company focused on building secure, intelligent solutions to complex business problems. Over 200,000 business customers and millions of individuals across 228 global markets today trust DeepL's Language AI platform for human-like translation, improved writing and real-time voice translation. Building on a history of innovation, quality and security, DeepL continues to expand its offerings beyond the field of Language, including DeepL Agent - an autonomous AI assistant designed to transform the way businesses and knowledge workers get work done.

Research Tooling Team’s mission is to provide the tooling, services and workflows that enable our researchers to build and train cutting-edge AI models. Our services include large-scale compute & processing orchestration, managing CI/CD pipelines for our ML code base, and providing tooling and workflows for overall research productivity. We collaborate closely with technical researchers, ML & HPC Engineers and Platform teams to run thousands of model training jobs per day on one of the largest NVIDIA super compute infrastructure in Europe.

Your responsibilities

• Design and build full-stack features: You will own problems end-to-end, collaborating closely with our researchers to design, build and deliver tooling for efficient research workflows.
• Maintain and Improve Systems: Build and maintain CI/CD pipelines for our ML code base and manage service deployments to ensure fast, safe, and reliable releases.
• Operational Excellence: Improve observability, monitoring and automation to proactively detect and resolve incidents.
• Ensure code quality and clarity: You’ll participate in thoughtful code reviews, contribute to architectural decisions, and help raise the bar for engineering excellence across the team.
• Collaborate cross-functionally: You’ll work closely with researchers, ML engineers and platform teams to ensure we’re solving the right problems and delivering real value to our users.

Qualities we look for

• Deep empathy for solving user problems and bringing a product-oriented mindset toward internal tools, balancing technical excellence with usability, adoption and measurable impact.
• Strong software engineering skills - clean abstractions, robust data modeling, sound architectural decisions, and ability to make things scale.
• Comfortable working across the stack, even if your strengths lean more towards backend, frontend or infrastructure. Our tech stack includes Python, FastAPI, React, PostgreSQL, and Kubernetes.
• Technical leadership, driving cross-team initiatives, mentoring peers, and setting engineering standards.
• Clear communicator, active listener, and team player. You thrive in a collaborative environment and welcome feedback.
• Eager to learn, open to new challenges, and not afraid to work with unfamiliar languages or tools when the problem demands it.

What we offer

• Diverse and internationally distributed team: joining our team means becoming part of a large, global community with people of more than 90 nationalities.
• Open communication, regular feedback: as a language-focused company, we value the importance of clear, honest communication.
• Hybrid work, flexible hours: we offer a hybrid work schedule, with team members coming into the office twice a week.
• Virtual Shares: An ownership mindset in every role. Every employee receives Virtual Shares, linking your contribution directly to DeepL’s growth.
• Regular in-person team events: we bond over vibrant events that are as unique as our team.
• Monthly full-day hacking sessions: every month, we have Hack Fridays, where you can spend your time diving into a project you’re passionate about.
• 30 days of annual leave: we value your peace of mind. With 30 days off (excluding public holidays) and access to mental health resources.
• Competitive benefits: we’ve crafted our benefits package to reflect the diversity of our team and tailored it to align with your unique location.

If this role and our mission resonate with you, but you’re hesitant because you don’t check all the boxes, don’t let that hold you back. At DeepL, it’s all about the value you bring and the growth we can foster together.

We are an equal opportunity employer. You are welcome at DeepL for who you are—we appreciate authenticity here. Our product is for everyone, and so is our workplace.