Senior Software Engineer (Python)
Harnham
Senior Software Engineer
We’re hiring a Senior Software Engineer to play a key role in building and scaling a high-impact ad‑fraud prevention platform used globally. This is a senior IC role for engineers who enjoy ownership, solving complex problems, and setting a high bar for engineering quality.
What you’ll do:
- Lead delivery of complex, cross‑service features
- Make pragmatic architecture and design decisions
- Own services end‑to‑end, including performance, reliability, and incident response
- Set standards for testing, observability, and security
- Mentor engineers and contribute to strong team practices
- Collaborate closely with Product, Design, and Data teams
What we’re looking for:
- Strong experience as a Senior Software Engineer in modern product teams
- Proven ability to design and deliver scalable, reliable systems
- Experience operating production services
- Strong coding, code review, and technical leadership skills
- Comfortable working through ambiguity and influencing technical direction
Why apply?
- Salary up to £100,000
- Hybrid working – 2 days per week in the London office
- High ownership, high‑impact role
- Strong engineering culture focused on quality and reliability
Reference: WJ-766_22122734