Full Stack Developer jobs in United Kingdom

Intercom is the AI Customer Service company on a mission to help businesses provide incredible customer experiences.

Our AI agent Fin, the most advanced customer service AI agent on the market, lets businesses deliver always‑on, impeccable customer service and ultimately transform their customer experiences for the better. Fin can also be combined with our Helpdesk to become a complete solution called the Intercom Customer Service Suite, which provides AI enhanced support for the more complex or high‑touch queries that require a human agent.

Founded in 2011 and trusted by nearly 30,000 global businesses, Intercom is setting the new standard for customer service. Driven by our core values, we push boundaries, build with speed and intensity, and consistently deliver incredible value to our customers.

We’re looking for a Senior Software Engineer to join our GTM Systems team. This role sits at the intersection of engineering, data, and business operations. You’ll be building the tools and systems that power our go‑to‑market teams, working across Salesforce and other internal platforms, and shaping how our revenue teams operate at scale.

You’ll combine strong engineering skills with a curiosity for business processes, tackling ambiguous problems and turning them into clear, scalable solutions.

• Design, build, and maintain scalable internal systems to support GTM workflows.
• Work closely with stakeholders to translate fuzzy business needs into clear technical solutions.
• Contribute to the data layer: modelling, transforming, and integrating data from different sources (e.g. Salesforce, Snowflake).
• Build and extend agentic/AI‑driven tooling to accelerate workflows.
• Contribute to technical design and code reviews, ensuring high‑quality, maintainable code.
• Mentor and support other engineers, helping to grow technical depth within the team.
• Balance speed and long‑term scalability, knowing when to prototype and when to harden solutions.

• Strong Python, SQL and Apex programming skills, proficiency in Python and Apex programming is essential, as Python will be the primary programming environment for most development tasks outside of the Salesforce codebase.
• Solid experience with data engineering/analytics tooling, especially Snowflake and DBT modelling.
• Comfort working in ambiguous spaces: able to frame problems, scope solutions, and iterate with stakeholders.
• Exposure to Salesforce and other GTM systems (eg. Outreach, LeanData, Clay, ZoomInfo), and an understanding of sales and marketing processes.
• Experience with backend or systems engineering – building APIs, integrations, or internal tooling.
• Excellent problem‑solving and communication skills, especially in collaborative, cross‑functional settings.
• Track record of operating at a Senior Engineer level: mentoring peers, leading projects, and delivering end‑to‑end solutions.

• Experience with agentic development or AI‑powered internal tools.
• Background spanning both analytics engineering and software engineering.
• Experience with Node.js, React.
• Familiarity with cloud infrastructure and deployment (AWS, GCP, or similar).

• Work on complex, high‑impact problems that sit right at the heart of how our GTM teams run.
• Collaborate with an experienced team where you’ll have autonomy and ownership from day one.
• Competitive compensation with relocation support if moving to San Francisco or Chicago.
• Opportunity to grow into a Staff‑level role as the team scales.

• Competitive salary and equity in a fast‑growing start‑up.
• We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen.
• Pension scheme & match up to 4%.
• Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents.
• Flexible paid time off policy.
• Paid maternity leave, as well as 6 weeks paternity leave for fathers, to let you spend valuable time with your loved ones.
• If you’re cycling, we’ve got you covered on the Cycle‑to‑Work Scheme. With secure bike storage too.
• MacBooks are our standard, but we also offer Windows for certain roles when needed.

Intercom values diversity and is committed to a policy of Equal Employment Opportunity. Intercom will not discriminate against an applicant or employee on the basis of race, color, religion, creed, national origin, ancestry, sex, gender, age, physical or mental disability, veteran or military status, genetic information, sexual orientation, gender identity, gender expression, marital status, or any other legally recognized protected basis under federal, state, or local law.