DeepL is a global communications platform powered by Language AI. Since 2017, we’ve been on a mission to break down language barriers. Our human-sounding translations and intelligent writing…
DeepL is a global communications platform powered by Language AI. Since 2017, we’ve been on a mission to break down language barriers. Our human-sounding translations and intelligent writing…
Core product: Language AI (DeepL Translator, DeepL Write, voice translation)
Latest major raise: $300M led by Index Ventures (May 2024)
Reported valuation: $2.0B post-money (May 2024)
Customers: Over 100,000 businesses
Company Overview
Problem Domain
Machine translation, automated writing assistance, and real-time multilingual communication for enterprises and individuals.
Founded
2017
Industry
Software Development
Funding Track Record
- May 22, 2024
$300,000,000
Reported post-money valuation ~$2.0B
Investor Signal
“Raised a $300M growth round led by Index Ventures with reported participation from institutional investors; earlier-stage support from notable VCs has been referenced.”
Founders
What we do
Join the Team
Senior Software Engineer | Full-Stack
HybridLondon Area, GB
Hybrid • London Area, GB
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Meet the team behind this journey
DeepL is not just a translation tool; we are building the Operating System for Global Communication. We are the rare AI company that builds the entire stack in-house: from training next-gen LLMs on our own NVIDIA DGX SuperPODs to delivering real-time Language AI to over 300 million users and 200,000+ businesses globally.
We are shifting gears. We are moving from "Software-First" to "Product-First." We don't hire engineers to just close tickets or optimize algorithms in isolation. We hire Missionaries—builders who obsess over the Why before the How.
As a Senior Engineer at DeepL, you will operate with the agency of a founder. You will join a high-performance engineering culture that values shipping speed, system reliability, and direct business impact over theoretical perfection, whether you are building our next-gen Voice API, architecting our massive billing engine, or scaling our core product platform, you will own your domain end-to-end.
Your responsibilities
Own the Outcome, Not Just the Code: You will move beyond "implementing specs." You will own revenue-critical systems from the initial problem definition through to architectural design, deployment, and production reliability. You measure success by user impact, not just pull requests merged.
Architect for Ambiguity: You will make high-stakes technical decisions (monolith vs. microservice, consistency vs. availability) with incomplete information. You don't wait for perfect requirements; you identify risks, build prototypes, and iterate based on real-world feedback.
Bridge the Gap: You will be bilingual in "Engineering" and "Business." You will translate complex technical constraints (latency, eventual consistency) into business terms for Product Managers, ensuring we negotiate the right trade-offs to ship value faster .
Drive Technical Pragmatism: You will avoid "Resume-Driven Development." Whether using our core stack (C#/.NET Core, Python, Kubernetes, React) or exploring new tools, you choose the technology that solves the customer problem most effectively, ensuring long-term maintainability over short-term trends.
Qualities we look for
A "System Thinker" Mindset: You don't just know syntax; you understand failure modes, system boundaries, and how your code impacts the broader architecture at scale. You can design systems that survive 10x growth.
High Agency & Bias for Action: You don't wait for permission. If you see a fire, you put it out. If the documentation is missing, you write it. You are comfortable unblocking yourself and the team in a fast-paced environment .
Product Fluency: You care deeply about the user. You ask "Why are we building this?" before writing a line of code. You have a track record of shipping features that solve real business problems.
Polyglot & Adaptable: While experience with C#/.NET Core or React is a bonus, we value engineers who can pick up the right tool for the job. You are comfortable traversing the full stack, from the database lock to the UI state.
Company Benefits
Startup jobs. A lot of them.
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AI-Native Velocity: You leverage AI-powered tools (like GitHub Copilot or Claude) to accelerate your velocity and eliminate repetitive toil. You use AI for boilerplate code, test generation, and debugging, allowing you to focus your cognitive energy on high-value architectural decisions and complex problem-solving.
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 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.
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.
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.
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.
