Senior Software Engineer C# – FLEXIBLE WORKING

Company: ZEREN
Apply for the Senior Software Engineer C# – FLEXIBLE WORKING
Location: London
Job Description:

The Role We are helping to hire a Senior Software Engineer for an exciting AI startup.

This is a core platform role with real ownership. You will work on data integrations, platform execution, and the systems that power AI-driven analytics.

What You Will Be Doing Building core data integrations with common SaaS platforms Designing data pipelines that ingest provider APIs into our analytics datastore Improving the agent platform and executor with better error handling, observability, and speed Making LLM interactions more efficient through prompts, snippets, and tooling Improving internal developer experience and platform tooling Helping take an early MVP into a production-grade platform

Why Join Early, high-impact role in an AI-native company Direct influence on platform architecture and technical direction Opportunity to work with an experienced founding team Build technology that fundamentally changes how teams use data

What We Are Looking For Strong experience building in Python Deep understanding of design patterns and system architecture Experience building scalable, performant platforms Strong grasp of event-driven systems and concurrency Solid database and API design experience, ideally with Postgres Understanding of good security practices Ability to clearly communicate technical trade-offs Familiarity with the modern AI tooling landscape Some cloud infrastructure experience including Terraform

Nice to Have Zero-to-one product experience, including OSS or side projects Data engineering experience such as pipelines and analytics Experience integrating LLMs, including prompt design and understanding model capabilities Deeper cloud experience, especially with GCP Experience with Encore, though this is easy to pick up

Ways of Working Ownership mindset with comfort taking ideas from rough outline to implementation Execution first approach where speed matters, balanced with pragmatism Iterative development focused on shipping, learning, and improving First-principles thinking rather than cargo-cult engineering Ego-less culture with direct, constructive feedback Comfort working asynchronously and learning independently AI-native approach using tools like Cursor or Claude Code to move faster…

Posted: June 2nd, 2026