Full Stack Software Engineer

Reposted 12 Days Ago
San Francisco, CA
In-Office
125K-180K Annually
Senior level
Information Technology • Marketing Tech
Reacher powers creator marketing for the world's largest brands. YC S25.
The Role
The Senior Full-Stack Software Engineer will lead product features from research to implementation, shape engineering architecture, mentor other engineers, and design scalable backend and frontend systems using modern technologies.
Summary Generated by Built In
About Reacher

We're the #1 TikTok Shop partner helping brands like Under Armour, Hanes, HeyDude, and Logitech scale their affiliate marketing. We've crossed 7 figures in ARR and are rapidly scaling our team this year.

Our vision is to become the Hubspot for creator marketing, powering brands and creators to connect and grow across all commerce platforms (Youtube Shopping, Instagram Shopping, Shopify, Amazon). We're building key infrastructure for the creator economy and implementing AI with the world's largest brands and creators.

Your work will directly impact users on day 1 - our user base depends on our product daily.

What You'll Do
  • Own and lead product features end-to-end: research, design, implement, test, and ship

  • Lead and shape engineering architecture - set standards for code quality, testing, and development practices across the stack

  • Mentor and guide other engineers, establishing best practices and patterns

  • Talk directly to customers and translate vague requirements into polished user experiences

  • Design scalable backend systems (Python, FastAPI, PostgreSQL, GCP)

  • Build responsive, delightful UIs (React, TypeScript, Tailwind, shadcn/ui)

  • Write clean, maintainable, and testable code with minimal oversight

  • Drive architectural decisions and engineering processes

  • Ship fast and learn fast - high urgency environment

You're a Fit If
  • 2–6 years of professional full-stack experience at a product-first company or FAANG-level environment (Senior SDE ownership expected)

  • Comfortable building features across the entire stack—from schema design and backend APIs to pixel-perfect, accessible frontend

  • Care deeply about product, design, and user experience—not just code

  • Have owned something meaningful end-to-end (a product module, infrastructure refactor, major feature launch)

  • Can be the technical expert and set standards for engineering quality

  • Resourceful and thrive in ambiguous environments—you figure things out independently

  • Have strong product intuition and can push back on requirements when needed to improve outcomes

Technical Skills We Value

Backend:

  • Python, FastAPI, PostgreSQL

  • System design and scalable architecture

  • GCP/cloud infrastructure

  • API design (REST/GraphQL)

Frontend:

  • React, TypeScript, Next.js

  • Tailwind CSS, shadcn/ui

  • State management (Redux, Zustand, React Query)

  • Frontend performance optimization and accessibility (WCAG)

General:

  • Testing frameworks (Jest, React Testing Library, Cypress/Playwright)

  • Code reviews, documentation, and establishing conventions

  • Product analytics tools (Amplitude, Mixpanel) for data-driven development

Bonus Points If
  • You've worked at an early-stage startup or been a first/early engineering hire

  • You've built internal tooling, dashboards, or systems that scaled to thousands of users

  • You've led technical initiatives or mentored junior engineers

  • You've built or maintained design systems

  • You're curious about AI, e-commerce, or automation—we work in that space

  • You've shipped side projects or contributed to open-source

  • You've worked directly with designers and can contribute to design discussions

Why Join Us
  • Post-revenue company solving real problems for real customers

  • Be a technical leader—define our engineering culture and standards as we scale

  • High autonomy and visibility—no boring tickets

  • Your code reaches users within days, not months

  • Strong engineering-first culture

  • Shape both the product and the company

When Applying

Feel free to send a short note about something you've built and why this role excites you. GitHub/LinkedIn/resume is great, but we care more about how you think and build!

Top Skills

Amplitude
Cypress
Fastapi
GCP
Jest
Mixpanel
Next.Js
Playwright
Postgres
Python
React
React Testing Library
Redux
Tailwind Css
Typescript
Zustand
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: San Francisco, California
17 Employees
Year Founded: 2024

What We Do

Reacher streamlines TikTok Shop influencer marketing by automating tedious tasks, eliminating the need to hire a VA or spend countless hours on influencer outreach and management.

Similar Jobs

ServiceNow Logo ServiceNow

Principal Software Engineer

Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Remote or Hybrid
Santa Clara, CA, USA
28000 Employees
218K-381K Annually

Anduril Logo Anduril

Security Engineer

Aerospace • Artificial Intelligence • Hardware • Robotics • Security • Software • Defense
In-Office
Costa Mesa, CA, USA
6000 Employees
191K-253K Annually

ServiceNow Logo ServiceNow

Senior Software Engineer

Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Hybrid
Mountain View, CA, USA
28000 Employees

Benchling Logo Benchling

Software Engineer

Cloud • Healthtech • Social Impact • Software • Biotech
Hybrid
San Francisco, CA, USA
605 Employees
165K-223K Annually

Similar Companies Hiring

ClickMint Thumbnail
Marketing Tech • Generative AI • eCommerce • AdTech
Malibu, CA
9 Employees
Standard Template Labs Thumbnail
Software • Information Technology • Artificial Intelligence
New York, NY
15 Employees
PRIMA Thumbnail
Travel • Software • Marketing Tech • Hospitality • eCommerce
US
15 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account