Software Engineer, Ads (Backend)

Cambridge · Concord · USD 110,000-125,000 / year · Full-time · Hybrid · Posted Oct 2, 2026

At a glance

Design and build backend features, from scoping through deployment and ongoing production support, with guidance from senior engineers and tech leads.
Work with product managers and commercial partners to understand requirements and deliver reliable outcomes for the Ads backend team.

Design and build backend features, from scoping through deployment and ongoing production support, with guidance from senior engineers and tech leads on more complex or ambiguous problems
Take part in technical design reviews and architecture discussions, asking good questions and contributing ideas
Write well-tested, readable, and maintainable code consistent with team quality standards; participate actively in code reviews, both giving and receiving feedback
Work with product managers and commercial partners to understand requirements and deliver reliable outcomes
Participate in on-call rotations: monitor system health, investigate production issues, and write clear bug tickets and documentation
Look for opportunities to improve system performance, reduce complexity, and pay down technical debt in aging codebases
Take part in sprint ceremonies — planning, refinement, retrospectives, and demos — and contribute ideas for improving team delivery
Use AI-assisted development tools responsibly to improve productivity, code quality, and delivery efficiency
Collaborate with engineers, data scientists, and business intelligence teams to deliver integrated solutions
Grow your skills through mentorship, pairing, and feedback from more senior engineers

Experience designing, building, and operating backend systems, gained through professional roles, internships, or substantial personal or academic projects
Working proficiency in Java or a comparable backend language
A foundational understanding of system design and debugging, and comfort working in distributed or multi-service environments
A collaborative working style: you communicate clearly, follow through on commitments, surface risks early, and ask good questions
Professional proficiency in written and spoken English
Curiosity and a willingness to learn new tools, systems, and approaches, and to challenge existing approaches with well-reasoned alternatives

Familiarity with ad tech systems, bidding logic, or monetization infrastructure
Experience with server-to-server data integrations or event-driven architectures
Experience working in an agile team environment with sprint-based delivery
Exposure to observability tooling, metrics, or production debugging workflows