Backend System Architect

About Coframe

At Coframe, we are building a future where user and agent interfaces can adapt, evolve, and personalize themselves. We are generating revenue, growing rapidly, and trusted by companies you definitely know.

Coframe is a primarily in-person company based in San Francisco, well-capitalized with backing from Khosla Ventures, Nat Friedman, the founder of Android, and others. Our team is small and talent-dense, consisting of competitive programmers, former founders (including our founder who previously co-founded a unicorn), and AI researchers from top institutions who have created some of the most popular open-source code generation projects.

About the role:

We’re looking for a Backend System Architect to help build the systems that power Coframe’s platform. This role is based in our San Francisco office, where our team works together five days per week.

You’ll work across our backend infrastructure, data systems, APIs, and AI-powered workflows. This is a high-ownership role for someone who enjoys solving ambiguous technical problems, designing systems from the ground up, and shipping reliable production software quickly.

As an early engineer, you’ll have significant influence over our architecture, engineering practices, and product direction. You’ll work closely with our founders, product engineers, and applied AI team to turn complex product requirements into scalable and reliable systems.

You’re a great fit if you have:

3+ years of experience building and operating backend systems in production

Comfort working in a fast-moving environment with evolving requirements and limited structure

Strong software engineering fundamentals and experience designing distributed or data-intensive systems

Proficiency in Python or another modern backend language

Experience building APIs, services, databases, and asynchronous workflows

A track record of owning meaningful technical projects from conception through production

Strong judgment around system design, reliability, and technical tradeoffs

Clear communication and a collaborative approach to solving problems

A builder mindset—you move quickly, care deeply about quality, and are energized by creating something from the ground up

Experience at an early-stage or high-growth startup

Familiarity with technologies such as AWS, Kubernetes, Docker, Kafka, and Postgres

Familiarity with evaluation systems, observability, orchestration, or distributed task execution

Experience working on systems where correctness, latency, and reliability directly affect the customer experience

What You’ll Do:

Design, build, and operate reliable backend services, APIs

Own technical projects from initial architecture through production deployment and ongoing operation

Build systems that process high volumes of events, experiments, and customer data

Improve the interoperability, reliability, performance, observability, and scalability of our platform

Make thoughtful architectural decisions while balancing speed, simplicity, and long-term maintainability

Work closely with product and customer-facing teams to translate real-world needs into reusable platform capabilities

Help establish engineering standards and shape the technical foundation of the company

Benefits:

Flexible (Unlimited) Paid Time Off

Medical, Dental, and Vision benefits for you and your family

Life Insurance and Disability Benefits

401k Plan with Coframe match

Meals covered in-office

Gym membership

Why Coframe

Elite Team: Our founder is a serial entrepreneur who previously co-founded a $2B+ unicorn with Tom Brady and guest lectures AI at Stanford. Our team includes researchers from top institutions who created some of the world's most popular open-source code generation projects.

OpenAI: We’re the only marketing technology company officially partnered with OpenAI. Our engineers and researchers work directly with their team to co-train a model specifically for our use case, which is a differentiator, and a testament to the technical caliber of our team.

Inbound Leads: We’re currently growing at 120% QoQ with a consistent flood of inbound demand. We’re looking for the right saleshumans to capture this demand and market opportunity.

Top VCs: We’re backed by tier-1 investors including Khosla Ventures, Nat Friedman (former GitHub CEO), and Rich Miner (Android co-founder). Joining now means getting a seat on the rocket ship before our Series A: a once-in-a-lifetime opportunity to join in the early innings.

Already Crushing It: For our first product, we built proprietary generative AI technology that enables our Agents to autonomously design, code, debug, and deploy A/B tests, Landing Pages, and Personalization experiences. We effectively 10x testing velocity, replacing agencies, legacy tools, and the need to pull in-house designers and engineers for testing. In the last 6 months, we have already driven $221.4M in incremental revenue for our customers like Dropbox, Replit, and Intuit.

“You guys are insane.” - OpenAI team

“Coframe makes you feel like you have a team of 100 people.” - Replit team

Coframe is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by applicable federal, state, or local law.