Software Engineer

Location: San Francisco
Type: Full time
Compensation: $130K - $175K; 0.10% equity
Posted: 8D AGO

About the role

About Reflex

Reflex helps teams build, deploy, and manage production applications in Python. We’re hiring a Software Engineer to build and maintain the shared technology behind our platform.

About the role

You’ll join the Platform team under the Head of Engineering and contribute across infrastructure, AI, and the open-source Reflex framework. Your focus will follow project needs and your expertise, with clear ownership for each project.

You’ll turn product requirements and customer feedback into reliable, reusable capabilities, taking work from design through implementation, testing, release, and production operation.

What you’ll do

Design, implement, test, review, and release maintainable software. Explain technical tradeoffs and document interfaces and operational behavior.
Build and operate hosting, deployment systems, monitoring, and recovery tooling. Improve reliability, capacity, infrastructure security, and cost, including on-premises platform deployments where applicable.
Build shared AI capabilities and model integrations. Improve inference performance, latency, and cost; develop evaluations and investigate quality regressions and production failures.
Develop core Reflex components, APIs, and application runtime capabilities. Fix framework defects, improve performance and developer experience, and maintain compatibility, releases, and migration guidance.
Maintain meaningful tests, diagnostics, and documentation. Diagnose incidents and address recurring failure modes.
Collaborate with Platform engineers and Forward Deployed Engineers on shared dependencies. Work with the Deployment Strategist to understand customer feedback and shape reusable product improvements.

How you’ll work with the team

The Head of Engineering leads Platform and sets its roadmap and priorities. You’ll own technical implementation and quality for your assigned projects across infrastructure, AI, and the framework. Forward Deployed Engineers own customer applications and integrations; you’ll partner with them on shared platform capabilities and technical fixes.

What you bring

Strong software engineering skills and experience building production systems.
Ability to design, debug, test, and maintain reliable software.
Clear communication of technical decisions and tradeoffs.
Relevant depth in infrastructure, AI systems, or frameworks and developer tools.

Helpful experience includes Python, cloud infrastructure, deployment automation, model APIs and evaluations, application runtimes, frontend integration, and open-source development. Specialized experience depends on the project.

How success is measured

Reliable delivery of useful shared capabilities.
Improvements to quality, performance, reliability, or developer experience.
Effective resolution of defects and production issues.
Clear documentation and productive collaboration across Platform and Deployment.

Your first 90 days

First 30 days: Learn Platform systems, priorities, users, and production risks.
Days 31–60: Own a scoped improvement with appropriate tests, documentation, and success measures.
Days 61–90: Ship the improvement, review its impact, and identify the next priorities with the Head of Engineering.

Location and compensation

Full-time, in-office in San Francisco. Base salary: $130,000–$175,000 annually. Equity: 0.1%.

Must be authorized to work in the United States. Reflex does not offer visa sponsorship for this role.

When applying, tell us about a system you built or improved, the technical decisions you made, and what you personally owned.

About Reflex

Reflex is the operating system for building mission-critical enterprise applications.

Today’s enterprise stack is fragmented. Shipping an app requires stitching together multiple tools and coordinating across multiple roles. Reflex replaces that complexity with a single, unified platform to build, deploy, and manage production applications end-to-end.

We empower teams to own the entire lifecycle of their apps — from idea to production — without needing specialized infrastructure, DevOps, or platform teams. We do this by providing solid, reusable abstractions at both the framework and infrastructure layers. Because we own the underlying open-source framework and the platform it runs on, we can manage the full lifecycle of the application seamlessly.

With Reflex, teams securely connect to company data, use AI to build standardized applications on top of our open-source framework, and deploy with a single click to share across their organization.

We’re replacing the fragmented enterprise stack — and the organizational bottlenecks that come with it.

Why join Reflex now?

Growth: Reflex has powered over 1 million applications, earned 28,000+ GitHub stars, and is used by 30% of Fortune 500 companies for internal tools and data-driven applications.
Team: Work with people who are genuinely passionate about improving the web. Our founding team consists of open source maintainers, top-ranked competitive programmers/IOI medalists, and founding team members from dev tool unicorns.
Future: We are growing extremely quickly and just raised another round of funding.

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