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Principal Software Engineer, React Native

New North AmericaPrincipal

Principal-level individual contributor owning the architecture and hands-on development of Otto's React Native/Expo mobile app (iOS/Android) for its dedicated-device personal AI assistant — building real-time streaming conversations, Bluetooth/native integrations, and reliable syncing with TypeScript, React Query, and tRPC, while mentoring engineers.

AI Android Authentication Bluetooth Cloud +8 skills

Mobile App Engineer-Crypto Trading

New North AmericaFull-time

Build a next-generation native iOS cryptocurrency trading app from the ground up in Swift, owning mobile architecture, real-time market data via REST/WebSockets, secure wallet and biometric integrations, and full App Store release lifecycle. Full-time, on-site in New York City.

AI API Authentication Blockchain CI/CD +7 skills

185K – 300K $

Definitive Healthcare

Lead Backend Developer

Open 56d APACLead H-1B sponsor history

Lead a backend team in architecting and developing scalable Python microservices and RESTful APIs for healthcare analytics products, using Django, FastAPI, Docker, Kubernetes, Redis, and PostgreSQL.

Agile Analytics API Containerization Design Patterns +18 skills

Senior Software Engineer - Agent Team

New RemoteNorth AmericaFull-timeSenior H-1B sponsor history

Senior engineer on Automox's agent team, building and operating the event-driven services and communication for 2M+ endpoint agents behind its cloud-native IT endpoint management platform. Backend-heavy work in Go/Java on AWS (Kafka, MQTT, DynamoDB, websockets) with TypeScript/Vue UI ownership. Fully remote US company.

Automation AWS Cloud Cloud Native DevOps +24 skills

140K – 190K $

Frontend Engineer - Cognitive Twin (Mensch)

New On-siteEurope

Frontend Engineer building the browser-based tools for NEURA's Cognitive Twin inside Neuraverse, where robot applications are designed, real-time data visualized, and simulations run on virtual and real robots. Day-to-day work is React/TypeScript web development, growing into 3D and real-time web rendering alongside simulation, backend, and AI teams.

AI API CSS Git gRPC +10 skills

Frontend Engineer - Cognitive Twin (human)

New On-siteEuropeFull-time

Builds the browser-based frontend of NEURA Robotics' Cognitive Twin — tools for designing robot cells and applications plus real-time visualization of simulations and real robots inside the Neuraverse platform. Day-to-day is React/TypeScript web development with APIs and state management, growing into 3D (Babylon.js/Three.js) and real-time web work.

AI API CSS Git gRPC +10 skills

Eplanet Communications Ltd.

Backend Node.js Developer - REST APIs & WebSockets

Backend developer building server-side applications with Node.js and Express.js: developing RESTful APIs, integrating with front-end components (React.js/Next.js), and creating real-time features with Socket.io/WebSockets. Also optimizes performance, scalability, and database efficiency using MongoDB, MySQL, or PostgreSQL.

API AWS Azure CI/CD Cloud +14 skills

Python Software Engineer, AI/ML Integration & AI Agents

New HybridEuropeFull-time

Python engineer at a dual-use RF-intelligence startup who turns ML models into production software: building inference pipelines, AI agents, and REST APIs that run on embedded Linux devices with tight CPU/memory constraints. Core stack: Python, FastAPI/Flask, ML runtimes (PyTorch, ONNX, TensorRT), Linux, Docker.

Agentic AI AI API CI/CD Containerization +44 skills

CHAOS Industries

Staff Software Engineer

Open 81d North AmericaFull-timeStaff

Build and operate secure Azure cloud infrastructure and backend services for real-time radar systems, ensuring reliability, security, and low-latency performance for defense and commercial applications.

AI Azure Cloud Data Pipelines Distributed Systems +6 skills

190K – 260K $

CHAOS Industries

Senior Software Engineer (Backend)

Open 67d North AmericaFull-timeSenior

Senior backend engineer at CHAOS Industries in San Francisco, onsite, building Python (FastAPI) services and data pipelines that move and process real-time radar sensor data — edge-to-cloud delivery, streaming/replay of 3D geospatial data, and fleet orchestration. Requires U.S. person status and security clearance eligibility.

AI Azure Cloud Data Pipelines Distributed Systems +6 skills

140K – 240K $

Performa HR-agency

Senior Python Backend Developer

Open 75d RemoteWorldwideSenior

Builds and maintains a high-performance async Python backend for a real-time crypto arbitrage platform, integrating exchanges via WebSockets/REST and optimizing latency.

API Asyncio AWS DevOps Distributed Systems +23 skills

Senior Backend / Platform Engineer - Systems Integration & Async Workflows

New LATAMContractSenior

Own complex, hands-on backend changes on a focused team entrusted with modernizing critical production systems. ABOUT SEESAW Seesaw helps elementary educators deliver joyful, inclusive learning experiences through…

API Aurora Authentication Automation AWS +19 skills

ATOMS Careers page

Frontend Engineer

Open 126d North AmericaFull-time

Build and scale Picnic’s real-time logistics and operations platforms using React, TypeScript, and GraphQL, while shaping frontend architecture for courier mobile apps and web surfaces.

API GraphQL Networking React React Native +3 skills

145K – 183K $

Senior Full Stack Engineer

Open 123d North AmericaFull-timeSenior

Build end-to-end applications and APIs for autonomous vehicle platforms as part of a founding team, creating real-time interfaces and modern frontend/backend experiences that process high-dimensional sensor data. Work with TypeScript/Python, RESTful APIs, websockets, gRPC streaming, and databases like PostgreSQL and Redis in a Physical AI robotics company.

AI API Automation Distributed Systems gRPC +9 skills

176K – 242K $

ATOMS Careers page

Senior Full Stack Engineer

Open 123d North AmericaFull-timeSenior

Senior Full Stack Engineer at Atoms builds software interfaces for autonomous vehicle platforms, integrating frontend/backend systems with real-time data and APIs in San Francisco.

AI API Automation Distributed Systems gRPC +9 skills

176K – 242K $

ATOMS Careers page

AI Engineer - Associate

Analyzes sales and operations data to create reports and dashboards, using SQL, Python, and BI tools, to support data-driven decisions for a cloud kitchen company in Bogotá.

Agentic AI AI API Automation AWS +24 skills

ATOMS Careers page

Full Stack Engineer

Open 69d North AmericaFull-time

Build full-stack applications and APIs that power autonomous vehicle platforms, including real-time UIs and data-driven insights for mining operations.

AI API Distributed Systems gRPC Microservices +8 skills

145K – 183K $

ATOMS Careers page

Senior Frontend Engineer

Open 59d North AmericaFull-timeSenior

Builds and scales real-time logistics platforms for a meal-delivery startup, designing high-performance React apps and mobile apps while leading frontend architecture, debugging, and team mentorship.

API GraphQL Networking React React Native +3 skills

176K – 242K $

AI Engineer - Associate

Atoms is hiring an associate AI Engineer in Bogotá (onsite) to architect and build complex web applications, using AI coding assistants for rapid 'vibe coding' while rigorously reviewing and hardening AI-generated code. Core stack spans React/Next.js, Node.js, Python/FastAPI, cloud platforms, Docker/Kubernetes, and LLM/RAG integrations.

Agentic AI AI API Automation AWS +24 skills

ATOMS Careers page

Full Stack Engineer

Pronto AI is hiring a Full Stack Engineer in Belo Horizonte to build end-to-end applications and APIs that connect its autonomous haulage (mining AV) platforms to the digital world, including real-time UIs for internal and external users. Core stack includes TypeScript/Python, REST APIs, websockets/gRPC, and PostgreSQL/MongoDB/Redis.

AI API Distributed Systems gRPC Microservices +8 skills