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# Full Stack Engineer

- **Company:** Abacus Group
- **Location:** United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Flutter, Query Performance, Application Programming Interfaces (APIs), Amazon Web Services, Data Analysis, Software Quality, Code Review, Databases, Mobile Application Software, PostgreSQL, MongoDB, Node.Js, Ruby on Rails, Next.js, TypeScript, Management of Software Versions, Datadog, Network Routers, Tailwind, ReactJS, Rspec, Caching, Backend, Playwright, Front End Software Development, Api Design, Pagination, Api Management
- **Published:** October 16, 2026
- **Apply:** https://abacusgroupstaffing.com/job/end-user-support-on-site-5-days-a-week-norwalk-ct-full-time-up-to-160k/

## About the Role

* 4+ years building production web / mobile applications (or equivalent impact)
 * Comfortable across frontend + backend: you can navigate a Rails codebase and ship React / Flutter changes without hand-holding
 * Experience building APIs and working with databases (schema design, query performance basics)
 * Product mindset: you care about UX details, performance, and measuring outcomes
 * Solid engineering habits: code quality, testing discipline, and attention to operational readiness
 * You're a good person. While building a startup is hard, being a good person is not. We are creating a culture of people with whom you would look forward to working. While we offer incredible experiences to our guests, it is just as important to us to foster an incredible culture for our employees.

## Description

Our client seeks a Full Stack Engineer to help rebuild and level up their highest-traffic customer journeys: Search * Details * Booking * Post-booking. You'll ship across frontend and backend, work closely with Product/Design, and help evolve the patterns we'll reuse across the marketplace for years.

This is a rare chance to work on consumer growth problems with real scale, while still being early enough to own meaningful outcomes. You'll lead execution on scoped projects end-to-end, with strong support from senior and staff engineers on architecture and design decisions.

What You'll Do

 * Own full-stack features across key marketplace flows (SRP, property details, booking, account), with measurable impact on conversion, performance, and reliability
 * Ship end-to-end: UI + API + data model changes + instrumentation/analytics + rollout + iteration based on results
 * Contribute to pragmatic patterns in a Next.js App Router codebase (routing, data fetching, caching, error handling, analytics)
 * Partner with backend engineers on API contracts that make the UI fast and resilient (filtering, pagination, performance budgets, versioning/rollout patterns)
 * Improve quality through testing and observability (Playwright, Datadog), and raise the bar through thoughtful code reviews
 * Partner with Product/Design to translate complex system states into clear, trustworthy UX
 * Strengthen operational readiness for critical workflows by improving dashboards, alerts, tracing, and lightweight runbooks

Tech Stack

 * Frontend: Next.js, React, TypeScript, Tailwind, Shadcn
 * Backend: Ruby on Rails, Node.js
 * Data: Postgres, MongoDB
 * Infra/Obs: AWS, Datadog
 * Testing: RSpec, Playwright