Elios, Inc.

Senior Engineer

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Engineer with a 5+ year experience, focusing on GraphQL APIs, frontend (React + TypeScript), or Python services. Contract length is unspecified, with an on-site location and competitive pay rate. Strong communication and collaboration skills are essential.
🌎 - Country
United States
πŸ’± - Currency
$ USD
-
πŸ’° - Day rate
Unknown
-
πŸ—“οΈ - Date
October 4, 2025
πŸ•’ - Duration
Unknown
-
🏝️ - Location
On-site
-
πŸ“„ - Contract
Unknown
-
πŸ”’ - Security
Unknown
-
πŸ“ - Location detailed
United States
-
🧠 - Skills detailed
#API (Application Programming Interface) #FastAPI #Redis #Batch #Cloud #Python #React #Kubernetes #Databases #SQL (Structured Query Language) #TypeScript #Observability #Schema Design #Strategy #Monitoring #pydantic #GraphQL #JavaScript #ML (Machine Learning) #Scala #MySQL
Role description
Senior Engineer Highlights πŸ’» Build and scale modern applications across APIs, frontend, and backend services 🌍 Onshore role with close collaboration across engineering, product, and design πŸš€ Opportunity to specialize while still contributing across the full stack Role Summary We are seeking Senior Engineers to take ownership of complex technical systems while partnering with cross-functional teams. Depending on your strengths, you may focus on GraphQL APIs, frontend applications, or Python services/MLE integration, while still having the chance to contribute across the broader stack. This role is ideal for senior engineers who thrive in fast-paced environments, enjoy technical challenges, and can balance deep technical execution with collaborative teamwork. Key Responsibilities β€’ Design, implement, and optimize systems in your area of expertise (API, frontend, backend). β€’ Contribute to architectural decisions and technical strategy. β€’ Write clean, scalable, and maintainable code with strong test coverage. β€’ Collaborate across disciplines to deliver end-to-end solutions. β€’ Mentor teammates and share best practices through reviews and technical guidance. Core Skills & Archetypes 1. GraphQL / API Engineer (Node.js + Apollo) β€’ Schema design, resolvers, federation/gateway, caching, pagination, authentication (JWT/OAuth). β€’ Infrastructure: rate limiting, observability (metrics/traces), performance profiling. β€’ Databases: SQL schema design, query tuning, Prisma/TypeORM. β€’ Signal: Can model complex domains into clean GraphQL schemas and evolve them safely. 1. Frontend Engineer (React + TypeScript) β€’ React (hooks, context, routing), TypeScript, and scalable state management (Redux/Zustand). β€’ Testing with React Testing Library or Playwright; accessibility, performance budgets, and code-splitting. β€’ GraphQL client integration, handling of error/loading states, optimistic UI. β€’ Signal: Translates rough flows into polished, accessible product UIs with measurable performance. 1. Python Services / MLE Integrator (FastAPI) β€’ Async FastAPI, Pydantic models, dependency injection, background tasks, batch & streaming jobs. β€’ Machine learning engineering (preferred): model serving (TorchServe/TF-Serving/FastAPI), vector DBs, feature stores, inference optimization. β€’ Signal: Ships reliable inference endpoints with monitoring, observability, and rollback strategies. Requirements β€’ 5+ years of professional software engineering experience. β€’ Proficiency in one archetype with working knowledge of others. β€’ Familiarity with JavaScript/TypeScript, Python, GraphQL, Redis, MySQL, and Kubernetes. β€’ Strong communication skills and ability to work in highly collaborative teams. β€’ Comfortable balancing individual contribution with cross-team coordination. Why Join Us This role offers the opportunity to work on modern, cloud-native applications using a cutting-edge stack. Engineers here own impactful systems end-to-end while gaining exposure to multiple areas of expertise. It’s a chance to grow as a senior contributor, influence architecture, and shape products that scale.