
Full-Stack Engineer - Testing & Evaluation
Listing checked October 5, 2026 · pay as published by AfterQuery
Overview
AfterQuery seeks a full-stack engineer to build evaluation tasks that mirror production codebases. You will design multi-file projects, write supporting docs, and create Docker containers that keep each task repeatable. The role calls for strong JavaScript/TypeScript or another modern language, plus the ability to explain architecture in writing. Every project includes deterministic test suites, so correctness and reproducibility matter as much as feature work.
What You'll Do5
- 1Build software projects that reflect production engineering settings, with multiple files, dependencies, and realistic constraints.
- 2Write structured development challenges and pair each one with clear documentation that covers setup, intent, and limits.
- 3Create deterministic test suites that prove code correctness and repeatable results.
- 4Package tasks with Docker so every run starts from the same environment.
- 5Architect codebases that others can inspect, run, and evaluate without extra setup.
Requirements6
- 1Proficiency in at least one modern language such as JavaScript/TypeScript, Java, Go, Rust, or C/C++.
- 2Experience architecting or maintaining software projects that span multiple files.
- 3Hands-on work with Docker or a similar containerization tool.
- 4Strong technical writing and documentation skills.
- 5Preferred: background in full-stack architecture or end-to-end application development.
- 6Preferred: exposure to testing frameworks, build tools, or code-quality workflows.
Who Should Apply
The ideal candidate has shipped multi-file applications in a modern language and can containerize a project without hand-holding. You enjoy writing documentation and test cases as much as production code, because this work asks other engineers to run and inspect what you build. Strong fits include developers who have maintained a repo with modules, dependencies, and a README that a stranger can follow. Candidates who only built single-file scripts or classroom assignments often score low, and the same happens to applicants who treat Docker as an afterthought or cannot explain reproducibility choices. If your portfolio lacks evidence of architecture, testing, and container use, expect a lower match.
Salary Insight
This contract pays $75.00 per hour. That rate sits above many junior remote full-stack roles and aligns with mid-to-senior engineers who can own a multi-file codebase, set up Docker, and write test suites without close supervision.
Pay and demand for Quality Assurance & Testing roles
AggregatedTypical pay
$70/hour
This role
$75/hr
Most Quality Assurance & Testing roles pay $48–$90 per hour. This role's pay falls inside that range.
Based on 333 similar roles that publish pay · 120 publish only a top rate; those count at the rate they gave
Rates shown per hour. Yearly and monthly pay converted; one-time fees and non-USD pay are not included.
- Live similar roles
- 399
- Listed in last 30 days
- 192
- Remote
- 93%
Hiring most right now: SME Careers (118) · micro1 (115) · AfterQuery (39)
Most requested skills · share of roles
- llm evaluation24%
- ai training23%
- python22%
- trainer feedback21%
Figures from Quality Assurance & Testing roles live on NearSkill when this page loaded. A role can close before you apply, so check the listing itself.
Compare your resume against these rolesLocation
Compensation
$75/hr
Required Skills
Application Tip
Apply with a link to a public repository that shows multiple modules, a Dockerfile, and a test suite you wrote. In the README, name the language and framework versions, give the exact command to run tests, and explain one design tradeoff. This proof answers the core requirements faster than a resume summary.
How NearSkill helps you apply
1. Check your job match
We compare your resume with the job requirements to help you understand how well your experience fits.
2. Continue to the employer’s website
We’ll direct you to the employer’s application portal, where you can complete the application.
3. Get updates by email
If NearSkill is handling follow-up for this role, we’ll email you when there’s an update on your screening.
Want to check your fit first?
See how your resume matches this role before applying.
Check my job matchSimilar open positions
Explore active roles that match your skills and interests.

Talentxo
VerifiedFullstack Engineer (Typescript, Node)
As a Fullstack Engineer on a TypeScript stack, you will design and ship features end to end for AI-assisted business products that ingest email, messaging, and documents, run AI agents over the data, and present results in a web interface. The role spans API design, data modelling, React/Next.js frontend work, third-party integrations, and AI agent workflows. You will work across multiple repositories, breaking down tickets and delivering small, reviewable pull requests. Systems-level thinking is key: tracing problems from UI through API, database, and background jobs to external services. You will also use AI coding assistants as part of your workflow while owning the correctness of everything you ship.

AfterQuery
VerifiedSenior Full-Stack Engineer (Remote Contract)
AfterQuery supplies foundational AI labs, enterprises, and startups with human-generated datasets that sharpen model performance. The company raised a round from BoxGroup, YC, and strategic angels to expand its data infrastructure. As a senior full-stack engineer, you will build complete production applications that become training examples for AI models. Each project spans a different business domain, from dashboards and management systems to workflow tools and data-driven platforms. The core stack centers on Next.js, Redis, SQL databases, and Tailwind CSS.

AfterQuery
VerifiedSoftware Engineering Expert
AfterQuery, an early-stage Y Combinator-backed company, seeks software engineers for a remote contract that runs 2 to 3 weeks. You will handle project-based assignments across software development, debugging, code review, and technical implementation while working in varied stacks. The schedule stays asynchronous, and you commit about 10 hours each week, with pay from $50 to $100 per hour. Projects arrive one at a time, so you choose the work you accept and build a portfolio from real engineering problems.

AfterQuery
VerifiedMid-Level Full-Stack Engineer
AfterQuery supplies human-generated datasets used to fine-tune AI systems, and this role sits on the engineering side of that mission. You will build full applications with Next.js, Redis, and SQL that become training examples for AI models. Each project spans a different domain, from dashboards to workflow tools, so the work changes shape instead of repeating one product. The schedule is remote and the engagement pays $80 per hour.

Talentxo
VerifiedFullstack Developer (Python / Node.js, React / Angular) - GB04
This role centers on building and maintaining full-stack web applications, with Python or Node.js as your primary backend language. You will design scalable REST APIs, connect them to frontend interfaces built in React.js or Angular, and work across relational databases such as PostgreSQL or MySQL. The position also involves deploying containerized applications with Docker and integrating cloud services on Azure or AWS. Expect to take part in system design, testing, deployment, and production support while collaborating with product, design, and QA teams.

Turing
VerifiedJavaScript / TypeScript Full-Stack Developer
This role centers on building and refining the code that trains and evaluates AI models for leading LLM companies. You'll write production-grade JavaScript/TypeScript across the stack, using back-end frameworks like Node.js or Nest.js and front-end libraries such as React, Vue, or Angular. Daily work includes running model evaluations, ranking responses, and writing rationales that feed Supervised Fine-Tuning and RLHF processes. You'll also review peers' code, design evaluation strategies, and collaborate with researchers to align model behavior with user needs and ethical guidelines.

