Backend Engineer

Noom US

$129K — $152K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of software engineering experience in Java, Python, Kotlin, and TypeScript.
  • Hands-on experience with LLM APIs like OpenAI and Anthropic, including prompt engineering and function calling.
  • Experience with orchestration frameworks, particularly LangGraph and CrewAI.
  • Familiarity with agentic development tools such as Claude Code and Codex.
  • Production experience with AWS, Kubernetes, and CI/CD systems like GitHub Actions.
  • Experience developing evaluation frameworks for LLM outputs.

Responsibilities

  • Architect and implement autonomous systems translating product requirements into executable specs.
  • Design and build coordination systems for complex development workflows.
  • Develop observability infrastructure for agent performance and failure handling.
  • Productionize workflows utilizing LLMs from providers like OpenAI and Anthropic.
  • Integrate with CI/CD pipelines and infrastructure-as-code tools.
  • Implement frameworks for evaluating LLM outputs with human oversight.
  • Collaborate across teams in small, agile squads.

Benefits

  • Direct visibility and collaboration with executive leadership.
  • High autonomy and rapid iteration cycles for transforming systems.
  • Opportunity to build production-grade AI systems in a health mission.
  • Pioneering role in defining the future of agentic software development.
Full Job Description
About the Role

Our AI Team is looking for a mid-level Backend Engineer. In this role, you'll own meaningful backend engineering work, writing clean, scalable code, collaborating with senior engineers and stakeholders, and contributing to GenAI-adjacent initiatives that extend what we're already building. This is an IC-first, hands-on role: you'll spend the majority of your time doing the engineering work, with coordination across teams both local and international.
You Will
  • Deliver backend engineering work across Noom's product and Agentic/AI initiativesd
  • Partner with cross-functional stakeholders across engineering, product, and healthcare teams to execute on defined scope and priorities
  • Write and maintain scalable backend systems using Java and/or Kotlin that support Noom's community of users
  • Help continuously improve how the engineering team operates
About You

If you're energized by solving real backend challenges and want to build at the intersection of health tech and AI, this role may be for you!
You Have
  • 3-5 years of backend engineering experience with a strong command of Java, Kotlin, or similar languages
  • Solid engineering fundamentals; you write clean, well-structured code and can take ownership of meaningful technical scope
  • Ability to collaborate cross-functionally to understand requirements and deliver against business priorities
  • A pragmatic, adaptable mindset; you can navigate ambiguity and move fluidly across engineering projects without losing momentum
What Makes This Job Amazing
  • This is a hands-on engineering role and you'll spend your time building real systems with meaningful ownership
  • You'll collaborate closely with other engineering stakeholders, contributing to how scope and priorities are defined, not just executing them
  • You'll have the opportunity to grow into GenAI-adjacent work as the team explores extensions of ongoing projects across the business
  • You'll join a mission-driven company making a real difference in people's health
What You'll Earn and Enjoy
  • Pay that reflects your impact. Compensation benchmarked to the market and shaped by your impact and value.
  • Investment in your future. A 401(k) with company match to help you build long-term financial security.
  • Time to truly recharge. Paid holidays, generous time off, Summer Fridays, and a company-wide Summer Break week so the whole team can unplug together.
  • Care that covers it all. Access to top-tier medical plans for you and your family, including a premium-free plan option, alongside dental, vision, and life insurance.
  • Support for growing families. Paid parental leave to give you the time and flexibility to focus on what matters most.
  • And more to help you thrive. Stock awards, a performance-based bonus, and exclusive access to Noom's products, so you can grow with us, win with us, and enjoy what we build.

The base salary range for this position is $129,000-$152,000. Actual compensation is determined by job-related factors, including experience, skills, qualifications, and location.

This role is based in our Princeton office with a hybrid schedule (2 days per week on-site).

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