# Senior Fullstack Engineer I - Platform Foundations

**Company:** [Fetch](https://hotfix.jobs/companies/fetch)
**Location:** Remote
**Role:** Fullstack Engineering
**Salary:** $162k – $191k/yr
**Experience:** 4+ years
**Skills:** Python, svelte, TypeScript, Go, Distributed Systems, REST APIs, olap, LLMs, Agentic Systems, Data Analytics, Business Intelligence, Machine Learning
**Posted:** 2026-08-13

> Build and own backend-dominant fullstack features for FAST, Fetch’s internal AI analytics platform. The role requires 4+ years of fullstack experience, strong Python backend skills, modern frontend experience with Svelte or a comparable framework, and comfort working across distributed systems and AI-enabled products.

## Job Description

## Responsibilities
- Design, build, and ship product features across the FAST platform, primarily in Python services and APIs.
- Own backend-dominant fullstack work end to end, including Svelte frontend surfaces.
- Build data models, integrations, and service architecture that turn an AI agent into a dependable product.
- Improve FAST’s reliability, maintainability, and architecture.
- Raise backend and product engineering quality through code review, design discussions, and hands-on pairing.
- Translate ambiguous product needs into concrete implementation plans and make clear architecture tradeoffs.
- Improve team delivery practices, including effective use of AI-assisted workflows.

## Requirements
- 4+ years of hands-on fullstack engineering experience in a medium to large engineering environment.
- Strong backend experience, ideally with Python.
- Experience with modern frontend development and the ability to contribute to Svelte or a comparable framework.
- Comfort owning product features, service integrations, and implementation details across the stack.
- Solid grounding in distributed systems or systems-level engineering concepts.
- Strong written and verbal communication skills.
- Ability to work independently, navigate ambiguity, and drive work to completion.
- Track record of collaborating across backend, frontend, and machine learning disciplines.
- Interest in AI tools and agentic workflows that improve engineering speed, quality, and maintainability.

## Nice to Have
- Experience building real-time or near-time OLAP applications.
- Production experience with Svelte or another TypeScript framework.
- Experience building products on top of LLMs or agentic systems.
- Exposure to data, analytics, business intelligence, or experimentation tooling.
- Experience with Go.
- Experience balancing product delivery with platform evolution.

## Compensation and Benefits
- Base salary range: **$162,198–$190,821**.
- Equity for full-time employees.
- Dollar-for-dollar 401(k) match up to 4%.
- Medical, dental, and vision plans, including pet coverage.
- Up to $10,000 per year in continuing-education reimbursement.
- Employee resource groups.
- Flexible paid time off, 9 paid holidays, and a year-end week-long break.
- Paid parental leave and flexible return-to-work policies.
- One-time $2,000 Calvin Care Cash incentive for eligible employees welcoming new family members.
- Flexible remote or office work environment within the United States.

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**Canonical:** https://hotfix.jobs/jobs/1f85b643-bb09-4b4c-b77b-b2f89aec5415