2,947 Founding Engineer jobs

Triangle

Founding Engineer

Open 39d RemoteWorldwide

API AWS Blockchain EC2 ECS +7 skills

Build and maintain developer tools and APIs for blockchain integration, writing Node.js/Go services and React frontends while ensuring security and clear communication.

Bite

Open 39d HybridUKFull-timeC-level

Founding Engineer

AI API Azure C# Distributed Systems +15 skills

Build and ship full-stack features for a proptech startup that manages change and audit trails for structural engineers using a knowledge graph, TypeScript/React/Python, and LLM/RAG pipelines.

Toptal

Open 39d North AmericaSenior H-1B sponsor history

Senior Software Engineer for AI-Powered Banking Platform

Build and scale production-grade AI-powered banking services using TypeScript, Python, and LLMs. Own backend architecture, APIs, and distributed systems for a Series A fintech startup serving 100+ financial institutions.

Agentic AI AI API AWS CI/CD +17 skills

Neostella, Inc.

Agile API AWS Cloud GitHub +12 skills

Senior Python Developer

Open 39d APACSenior

Philippines

Build and lead backend services in Python and AWS for a legal-tech platform, designing scalable APIs and mentoring engineers to improve system performance and development velocity.

Propr

CLI DeFi Node.js Rust Smart Contracts +4 skills

Software Engineer - Solana

Open 39d RemoteMENA

United Arab Emirates

Build Solana smart contracts in Rust with Anchor, integrate DeFi protocols, and develop low-latency trading strategies with real-time WebSocket feeds.

Clera

Senior Software Engineer, Distributed Data Systems

Open 39d WorldwideSenior

Agentic AI AI Analytics SQL

Build a distributed data platform for an AI analytics startup, enabling enterprises to query messy data in real-time without SQL.

Light

Senior Software Engineer

Open 39d UKSenior

AI AWS ERP Fintech Kotlin +3 skills

Build and ship features end-to-end in a Kotlin/React stack that powers automated accounting and real-time financial reporting for global companies.

Gigs

Senior Software Engineer

Open 39d UKSenior

API Elixir Observability Rails Ruby +3 skills

Build APIs and backend services in Ruby, Go, TypeScript and Elixir to embed global connectivity into products, migrating a Rails monolith toward a distributed architecture.

Getground

Lead Software Engineer

Open 39d HybridUKLead

Accessibility AI Go React Remix +1 skills

Lead Engineer at GetGround building AI-native property investment products using React, Remix, TypeScript, and Go, while shaping engineering practices in a fast-moving PropTech startup.

Wexler

Software Engineer - Wexler

Open 39d UKContract

Agentic AI AI AWS CI/CD Cloud +8 skills

Build and scale Wexler’s full-stack litigation AI platform, integrating LLM-powered document analysis with Node.js/TypeScript backend, Python AI services, and modern cloud infrastructure.

DigitalGenius

Senior Software Engineer

Open 39d UKSenior

Agentic AI AI Analytics API AWS +10 skills

Build and own backend services and APIs for an AI-powered customer-experience platform serving major ecommerce brands using Scala, PostgreSQL, and AWS.

Staff Software Engineer (Privacy & Data Security)

Open 39d RemoteUKStaff H-1B sponsor history

Hipaa ISO 27001 Node.js React SaaS +2 skills

Build and lead the Privacy & Data Security engineering team in London, designing scalable SaaS features with TypeScript, React, and Node.js to help companies continuously monitor and prove their security posture.

Vast

Software Engineer I, Mission Software

Open 39d Worldwide

Builds and maintains software for next-gen space stations, focusing on mission-critical systems and microgravity research infrastructure.

Second Talent

Open 39d MENAFull-timeSenior

Senior Java Developer

United Arab Emirates

Leads a team of engineers to design and build scalable Java/Python solutions on AWS/Azure/GCP, while defining architecture and driving CI/CD pipelines in a fast-paced startup.

Agile AWS Azure CI/CD Cloud +6 skills

eleonor.ai

JavaScript Laravel PHP SaaS

Client Advisor / Software Engineer

Open 39d Europe

Switzerland

Hybrid role in Zürich advising clients and building web apps with PHP/Laravel/JavaScript for an AI-focused startup.

Senior Software Engineer

Open 39d On-siteUKSenior

Agentic AI AI Figma React React Native

Builds AI-powered mobile inspection tools for field workers, integrating voice, photos, and reports to automate data collection and decision-making in industrial and infrastructure settings.

Senior Software Development Engineer in Test

Open 39d North AmericaContractSenior H-1B sponsor history

Acceptance Criteria AI API Automation AWS +20 skills

Build and own test automation frameworks for Sidecar Health’s member-facing apps, integrating AI-assisted testing to catch issues early and ensure reliable releases across their multi-state health insurance platform.