Senior Software Engineer

The Role

Raydar is recruiting for this role on behalf of our client. Join as one of the first engineers and build backend-heavy, full-stack software while helping shape technical direction and engineering culture. This is a hands-on lead role that combines daily coding with mentoring a more junior engineer.

What You'll Do

Build the data foundations that record user activity and connect decisions to their results.

Develop automated , AI-driven systems that evaluate performance, decide on changes and carry them out.

Own full-stack delivery end to end , leaning toward backend and infrastructure work.

Ship dependable connections to external third-party platforms, along with workflow orchestration tooling.

Mentor a junior engineer while staying hands-on in the code every day.

What We're Looking For

3+ years of software engineering experience.

Experience taking production systems built on large language models from design through launch and operation.

Experience connecting LLM-driven applications to external services.

Full-stack skills with a strong backend emphasis, including data pipelines and service integrations.

Background at a high-growth technology company or a well-funded startup.

Experience leading or mentoring one or two engineers, for example as a tech lead or founder.

Early-stage or founding engineer experience building products from zero to one.

Strong communication skills.

Comfort juggling many priorities and creating structure in ambiguous situations.

Bonus Points

Familiarity with APIs from e-commerce or marketing technology providers.

A degree from a top engineering program, which can count in place of a startup track record.

Location And Work Model

New York, NY, United States

Hybrid, 4 days per week in office

Full-time

Compensation, As The Posting Describes It

Equity