Software Engineer | API

What Sets Us Apart

We are a global AI product and research company focused on building secure, intelligent solutions to complex business problems. Founded in 2017 by CEO Jaroslaw “Jarek” Kutylowski, DeepL now has around 1,000 passionate employees and is supported by world-renowned investors including Benchmark, IVP, and Index Ventures.

Our goal is to become the global leader in trusted, intelligent AI technology, building products that drive better communication, foster connections, and create a meaningful impact. To achieve this, we need talented people like you to join our journey.

Responsibilities

• Contribute to Developer Experience: Build features that improve how developers discover, onboard to, and use DeepL APIs. This includes implementing self-service flows, onboarding experiences, and configuration interfaces that reduce friction and delight developers from their first API call.
• Build Platform Components: Implement reusable components, contribute to documentation, and help maintain client libraries (SDKs) and starter templates that make it easier for customers and ISVs to build AI-enabled products on top of DeepL.
• Collaborate Across Teams: Work closely with teammates across API Core and adjacent teams—including Enterprise, Core Text, Voice, and Customization—to deliver consistent, well-designed APIs. Actively participate in code reviews, design discussions, and contribute to shared standards.
• Write Quality Code: Write well-tested, production-ready code and contribute to monitoring, alerting, and reliability improvements. Participate in incident response, learn from postmortems, and help the team continuously raise the bar on code quality and operational health.

Qualities We Look For

• A Developer-Centric Mindset: Think about APIs from the perspective of the developer using them. Care about clear abstractions, helpful error messages, and good documentation—not just whether the endpoint returns a 200.
• Solid Backend Fundamentals with Full-Stack Curiosity: Have a good foundation in backend development, RESTful APIs, and server-side systems (using Go, Python, Java, C#, or similar). Comfortable picking up frontend work when needed—whether that's contributing to a developer dashboard or a signup flow built in React/TypeScript.
• Ownership and Reliability: Take responsibility for what you ship. Write tests, monitor your code in production, and follow through when things go wrong. Proactive about flagging issues and asking for help when you need it, treating each incident as an opportunity to learn.
• AI-Native Velocity: Leverage AI-powered tools (like GitHub Copilot or Claude) to accelerate your output and reduce repetitive toil. Use AI for boilerplate code, test generation, and debugging—freeing up your focus for solving harder problems and growing your craft.

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. We're more than just colleagues; we're a group of professionals with a shared mission to connect diverse cultures.
• Open communication, regular feedback: As a language-focused company, we value the importance of clear, honest communication. We value smooth collaboration, direct and actionable feedback, and believe that leading with empathy and growth mindset makes us better together.
• Hybrid work, flexible hours: We offer a hybrid work schedule, with team members coming into the office twice a week. This allows you to engage directly with your team and experience the unique energy of our workspace, while still enjoying the flexibility and comfort of working from home. With flexible working hours and trust in your productivity, we are in sync with your team's general locations and time zones to foster effective and seamless collaboration.
• Virtual Shares - An ownership mindset in every role: Every employee receives Virtual Shares, linking your contribution directly to DeepL's growth and rewarding you with a stake in our future.
• Regular in-person team events: We bond over vibrant events that are as unique as our team, from local team and business unit gatherings, to new-joiner onboardings, to company-wide events that bring us all together–literally.
• 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 and get the opportunity to work with other teams–we value your initiatives, impact, and creativity.
• 30 days of annual leave: We value your peace of mind. With 30 days off (excluding public holidays) and access to mental health resources, we make sure you're as strong mentally as you are professionally.
• Competitive benefits: Our benefits package reflects the diversity of our team and is tailored to align with your unique location, ensuring you feel supported every step of the way.

About the Role

This role is within the API Core team, which focuses on Developer Experience, API platform infrastructure, and enabling internal product teams to launch world-class APIs quickly and independently. We are shifting from "Software-First" to "Product-First," hiring Missionaries—builders who obsess over the Why before the How.