Senior Software Engineer

Senior Software Engineer

Build foundational systems behind real world decisions

Full time · Hybrid- (San Francisco)

$225K–$300K + meaningful equity

The Opportunity

An extremely well funded, YC backed Series A start-up is building a next generation platform that sits at the intersection of data, automation, and high stakes decision making.

The product is already live, widely used, and growing quickly. The next chapter is about deepening the platform, scaling carefully, and raising the technical bar across systems that must be reliable, explainable, and correct.

This is a role for Senior / Staff engineers who want to work close to the core.

Why This Role Is Different

Substantial ownership: You’ll take responsibility for meaningful parts of the platform, from design through execution.

High trust environment: Small, senior team. Few layers. Real autonomy.

Clear impact: Your work directly influences outcomes that matter to end users and customers.

Strong compensation: Competitive cash at Series A plus meaningful equity.

Practical interviews: Real world system design and problem solving, no algorithm games.

What You’ll Work On

Core application and platform systems

Complex backend and data heavy workflows

Scalable services operating in a regulated or sensitive context

Accuracy critical logic where edge cases matter

Cross stack problem solving, with a backend leaning focus

The problems are nuanced, the constraints are real, and the solutions need to hold up over time.

Requirements:

You’re likely a strong fit if you:

Have 8+ years of professional Full Stack software engineering experience – with a Backend Lean

Have TypeScript, React.js, Node.js, Python - Experience with data driven or intelligent systems is helpful but not required

Have owned or significantly shaped production systems

Have experience working on Complex Backend systems at Infrastructure level

Are comfortable making architectural trade-offs with incomplete information

Have experience in early stage or fast moving environments

Are self directed, communicative, and pragmatic

Prefer building durable systems over shipping throwaway code

Ideally have some experience with AI/ML – Chatbots/ fine-tuning models etc

Computer Science Degree is a bonus.

The Environment

~30 people total, lean senior engineering team

Revenue generating, well capitalized, and growing

Multiple senior hires planned

On site collaboration in San Francisco

The Bottom Line

This is a role for engineers who want to:

Own meaningful technical decisions

Work on systems that actually get used

Be paid competitively for senior level impact

Build something substantive alongside other strong engineers

A high quality opportunity for the right person.