Senior Fullstack Engineer, Internal Platform Tools

LILT; United States; On-site; USD 130,000 - 170,000; Full time

Job summary

LILT is seeking a senior software engineer to join the Internal Tools group. You will own architecture and tooling for the AI benchmarking platform used by research teams, delivery, and operations.

The role focuses on end‑to‑end systems engineering, scaling infrastructure, and building self‑serve automation to accelerate annotator workflows. You will collaborate with delivery and engineering to set technical direction, extend pipelines, and raise the bar for quality and reliability across

Qualifications

• 5+ years of professional full‑stack software engineering with end‑to‑end ownership.
• Strong Python backend experience (FastAPI) + async SQLAlchemy with Postgres.
• Solid React/TypeScript frontend and modern data fetching stacks.
• Experience building and operating background job systems with idempotency.
• Experience integrating APIs (GitHub, OAuth/SSO, LLMs) and webhook sync.
• Ability to build Slack bot integrations for internal workflows.
• CI/CD, containerization (Docker), and infrastructure‑as‑code (Terraform).
• Ability to optimize memory usage in long‑running Python workers.

Responsibilities

• Translate new benchmark and data‑quality requirements into technical designs.
• Own internal workforce‑management tools for AI delivery and accounting flows.
• Own architecture and long‑term direction across multiple services.
• Extend audio/QA pipelines and QC tooling for data quality scoring.
• Design and ship new modules to plug workflows into existing lifecycle.
• Own API key provisioning and budget governance system.
• Build ChatOps automation to accelerate annotator workflows.
• Harden background workers and job processing infra.
• Enforce testing, CI/CD, and IaC across codebases.

Skills

Full-stack experience

Python backend (FastAPI)

Async SQLAlchemy/Postgres

React/TypeScript

Background job systems

APIs & OAuth

Slack bot integrations

CI/CD & IaC

Memory management (numpy/ML env)

Internal platform tooling

Tools

Docker

Kubernetes

Helm

ArgoCD

GitOps

Terraform

PostgreSQL

Job description

LILT is seeking a senior software engineer to join the Internal Tools group. You will own architecture and tooling for the AI benchmarking platform used by research teams, delivery, and operations.

The role focuses on end‑to‑end systems engineering, scaling infrastructure, and building self‑serve automation to accelerate annotator workflows. You will collaborate with delivery and engineering to set technical direction, extend pipelines, and raise the bar for quality and reliability across