Senior Software Engineer, Data & Machine Learning

We’re looking for a Senior Software Engineer who thrives at the intersection of software engineering and applied ML. This role is ideal for engineers who enjoy building real products — not just models — and want to take machine learning systems all the way from data to production. You’ll own the full lifecycle of ML-powered applications: designing data pipelines, building training workflows, integrating models into services, and deploying production-ready features that power delightful user experiences.

You’ll help us test new ideas quickly, by working in lean, build-measure-learn cycles. You’ll develop rapid prototypes, test them on real users, and iterate based on learnings and user-feedback.

No hands-on AI/ML experience, no problem! Do you excel at solving end-to-end software problems but don’t have hands-on experience with AI/ML? Do you have a computer science, statistics or other relevant STEM background? If so we’d love for you to learn the ML part on the job.

You’ll work in London, with 3 days per week from our office and 2 days per week from home.

• You’ll implement, test, and scale a wide variety of ML and AI capabilities, leveraging both established tools and emerging technologies;
• You’ll own the end-to-end development cycle of ML-powered features, including assessing the impact through means of experimentation
• You’ll collaborate with other cross-functional teams to integrate ML solutions into our products;
• You’ll monitor, evaluate, and improve the performance of models and ML-powered features in production;
• You’ll stay up-to-date with the latest developments in ML and AI, to ensure we’re always operating at the cutting-edge;

• Strong software engineering background with experience in building and maintaining production systems.
• Hands-on experience with machine learning frameworks (e.g., PyTorch, TensorFlow, scikit-learn) and MLOps tools (e.g., Airflow, MLflow, Vertex AI, or similar).
• Solid understanding of data engineering practices, including ETL, batch/streaming pipelines, and data quality monitoring.
• Familiarity with cloud infrastructure (AWS, GCP, Azure) and containerization.
• You have experience with shortening “build-measure-learn” by means of prototyping and experimentation to iterate quickly and build software users love.

Note: Linktree is committed to providing a fair and competitive compensation package including cash, equity, and benefits. The base salary offered for this role is targeted at $80,000-$110,000 GBP for roles based in United Kingdom. Final offers depend on multiple factors including location, experience, expertise, and role scope, and may vary from the range listed.

P.S. If you don’t tick every box in this listing, please don’t rule yourself out. We take pride in inclusion and hiring incredible human beings with great potential over ticking boxes – so if this role resonates with you, hit that apply button!

We’re on a mission to empower anyone to curate, grow, and monetize their digital universe. We created the “link in bio” category — and we’re just getting started. From creators, artists, and entrepreneurs to global brands, we’re redefining how people connect with their communities, showcase their content and promote products — all in one link. Today, a community of 70+ million use Linktree, including icons like Adidas, TikTok, the UN Environmental Program, The NFL, Manchester United, World Central Kitchen, Sabrina Carpenter, Olivia Rodrigo, and Selena Gomez. With 48,000 new accounts created every day, Linktree is the fastest-growing leader in our space. We’ve teamed up with some of the world’s biggest platforms including TikTok, Snap, YouTube, GoFundMe, Spotify, Google, Stripe, Reddit, Laylo, and Kajabi, to unify Linkers’ digital spaces, and we partner with retail brands Amazon, Lululemon, Nike, Target, Sephora, Lululemon, and more to share products they love. We’re a tight-knit, passionate team building best-in-class tools that make online presence simple, powerful, and yours. If you’re excited by the idea of shaping a new category, setting the standard, and making space for everyone to be seen and succeed, we’d love to meet you.

We’re a global, diverse team spread across continents with offices in London, Los Angeles, Melbourne, and San Francisco. We work together flexibly and you can choose the setup that works best for you: fully remote or a hybrid mix of office and home.

We offer autonomy in how you structure your days and weeks. While we’re mindful of time zones and occasionally collaborate outside the typical 9–5, we lean into async work to keep things flowing. Our culture is family-friendly and Zoom-casual where kids, pets, and delivery drivers are welcome.

Our approach to benefits considers the whole person and the unique contributions they bring to Linktree. We want the experience at Linktree to be one that enables people to truly thrive so we can Go Further Together (one of our values). Some ways we support you:

• An annual wellbeing allowance to use on things like (but not limited to) fitness memberships, development courses, childcare, travel, charitable donations, pet insurance, home office set-up - the choice is yours!
• Employer contribution towards your retirement.
• Generous time off for vacation, holidays, parental leave, volunteer time, and other categories.
• Employee stock option program - we want each and every employee to share in the company’s success.

At Linktree, we believe in promoting a culture that celebrates unique backgrounds, talents, and experiences, and we’re proud to be an equal opportunity workplace. We are creating an inclusive workplace where every individual feels valued, respected, and has equal opportunities to thrive. Linktree welcomes all people regardless of sex, gender identity, race, ethnicity, disability, pregnancy, age, or other lived experience. If you require accommodations to fully participate in our opportunities, please don’t hesitate to reach us at – your needs are important to us.