Your responsibilities

• Own a surface end-to-end. You will take a part of the Voice product from problem definition through architecture and delivery all the way to operation in production, across the whole path from interface to inference.
• Build where the requirement is still moving. You will make progress under genuine ambiguity, working directly with product and research on problems whose shape is still changing. You will know what to build now, what to defer, and what not to build at all, and you will be able to explain the difference.
• Make the latency and quality calls. The interesting decisions here are trade-offs a metric cannot settle: a mitigation that improves quality and costs delay, a model that is better and slower. You will make the call and own the consequence.
• Set the standard and lift the team. You will own technical design for medium to large efforts, define testing and incident standards for a product where failures are immediately audible, lead the hardest debugging, and mentor the engineers around you.

Qualities we look for

• A zero to one builder mindset. You do not need a roadmap to build, you need a problem. You are comfortable prototyping a feature in the morning and refactoring it for scale in the afternoon.
• Depth in real-time systems. Real experience with WebRTC, WebSockets, streaming architectures, or latency-sensitive systems in production, and a working understanding of where the time actually goes.
• Full-stack fluency with real range. React and TypeScript on the frontend, C# on the backend, or a language that transfers. You can follow a latency problem across every layer it touches.
• High agency. You do not wait for permission. If the transcript is flickering and nobody owns it, you own it. If a research constraint is undocumented, you write it down and take it to the people who can change it.
• AI native velocity. You use AI-powered tools to accelerate your work and remove repetitive toil. Boilerplate, test generation, and debugging go to the tools so your own attention goes to the decisions that matter. You know where the tools are reliable and where they are not, and you check the output rather than trusting it.

A note on our process

We hire into a specific team. This role sits in our Voice team, and the interview process is run by the people you would actually work with, including the hiring manager for this team. That means the conversations are about problems this team genuinely owns rather than generic exercises, and it means we can be honest with you early about whether the fit works in both directions. If we think you are strong but a better match for a different part of engineering, we will say so and introduce you.

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. Our global presence is growing–we've doubled in size nearly every year, with our employees based in the UK, Germany, the Netherlands, Poland, the US, and Japan, and we continue to expand our network.
• 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 a 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. We believe everyone should share in our success, and that’s why 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: Just as our team spans the globe, so does our benefits package. We've crafted it to reflect the diversity of our team and tailored it to align with your unique location, to ensure you feel supported every step of the way.

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. Go ahead, apply—let's discover your potential together. We can't wait to meet you!

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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. The more voices we have represented and amplified in our business, the more we will all succeed, contribute, and think forward! So bring us your personal experience, your perspectives, and your background. It’s in our diversity that we will find the power to break down language barriers in the world.