Senior Backend Engineer

Blitzy • Cambridge, MA

1d • $150,000 - $200,000

About The Position

We're looking for a Senior Back-End Engineer to take real ownership across our stack. You'll work directly alongside our CTO on current product and future development, and partner with the founding team to shape product, technology, and strategy. You'll help build not just our software, but our culture, our processes, and our engineering practices.
There are hard, interesting problems to solve here. We want someone who finds that genuinely exciting. If your colleagues describe you as curious, driven, kind, and creative — you'll fit right in.

What Success Looks Like
You write, review, and ship production code. The company's success depends on what you build.
You use Generative AI tools daily to improve the quality and speed of everything you deliver.
You make long-term architectural decisions, balancing speed, quality, and safety — not just what's easiest today.
You own the code you write end-to-end: from design through deployment to ongoing operations.
Your team can count on you when something breaks in production.
You communicate openly, share your reasoning, and keep the team aligned on important decisions.
You're a first-principles thinker who digs into how things actually work, not just how to use them.
You learn quickly from sparse documentation and unfamiliar codebases.
You thrive with autonomy, take pride in your craft, and go the extra mile to make things work.

Requirements

• Our hiring process is designed to assess a generalist set of engineering capabilities, with a specialization in back-end technologies.
• Required expertise: Python, Terraform, and GCP.
• Backend frameworks: Python, Node.js, NuxtJS, or Express.js
• Cloud platforms: Google Cloud, AWS, or Azure
• Languages: Python, JavaScript, TypeScript, Java, C++, or Go
• APIs & RPCs: REST, gRPC, or GraphQL
• Databases: SQL, NoSQL, PostgreSQL, MongoDB, or Firebase
• CI/CD: Jenkins, CircleCI, GitLab, or similar
• Version control: Git or Perforce
• Architecture: Microservices

Nice To Haves

• AI platform experience: OpenAI, Anthropic, HuggingFace, Vertex AI, Bedrock, or SageMaker
• Enterprise scale: proven track record building systems with >99% SLAs
• Deep Python, Terraform, and GCP expertise: not just familiarity — you've used these at scale

Responsibilities

• Write, review, and ship production code.
• Use Generative AI tools daily to improve the quality and speed of everything you deliver.
• Make long-term architectural decisions, balancing speed, quality, and safety.
• Own the code you write end-to-end: from design through deployment to ongoing operations.
• Be reliable when something breaks in production.
• Communicate openly, share your reasoning, and keep the team aligned on important decisions.

Benefits

• Competitive salary ($150K–$200K) and meaningful equity
• Paid medical, dental, and vision insurance for you and your dependents
• 4% 401K match
• Flexible vacation, sick days, and work-from-home days
• Technology budget — hardware, software, books, whatever you need
• The chance to reshape an entire industry and build technology that changes how software is created
• A beautiful office in One Kendall Square, surrounded by an energizing community of fellow startups
• Unlimited snacks, coffee, espresso, and fizzy water — fuel for your best work

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed