Founding Backend Architect for Enterprise SaaS
Pro Action
Proaction is seeking a Founding Engineer to architect and scale its core platform. This is a hands-on, high-ownership role in a fast-moving, early-stage environment, reporting to the CTO to define system architecture and engineering standards. You’ll build a modern TypeScript backend (NestJS), PostgreSQL and AWS-backed services, with a React frontend. You’ll own backend architecture, shape product and engineering culture from day one, and grow into long-term technical leadership as the company #J-18808-Ljbffr
- ...turn advanced AI models into a scalable SaaS workflow for biotech startups. You will own... ...product end‑to‑end, shaping frontend, backend, data, and integrations with a strong emphasis... ...peers, and maintain shipping velocity in a demanding enterprise context. #J-18808-Ljbffr...Backend
- ...CoffeeSpace seeks a Lead Frontend Developer to own the frontend direction of its AI-powered enterprise SaaS platform. You will lead a team of junior developers and collaborate with designers and PMs to shape the product experience. You will mentor engineers, drive architecture...Suggested
- ...experienced engineer to own architecture and deliver production features across four SaaS products. You will design backend models for multi-hospital structures, implement enterprise integrations, and collaborate with customers to translate needs into scalable solutions...BackendRemote work
- ...Coinbase is seeking an Architect to design distributed backend systems powering customer service and compliance platforms in San Francisco. You will define strategic roadmaps, lead technical direction, and mentor engineers to improve engineering quality. The role requires...Backend
- ...Staff Software Engineer to join TuneLab as one of the founding engineers. This IC role owns product end‑to‑end,... ...Manager. You will own the product surfaces, drive backend/frontend/data work, and ensure a scalable SaaS offering built on Lilly’s AI models for biotech customers...Backend
$200k - $300k
...highly skilled Senior/Staff Founding Full-Stack Engineer – Agent Systems... ...is heavily focused on backend engineering and systems, the... ...Experience with multi-tenant SaaS or AI infrastructure Strong... ...execution Experience with enterprise integrations Previous experience...BackendFull timeH1bWork at officeVisa sponsorshipMonday to Friday- ...Jinba in San Francisco is seeking a full-stack engineer to build frontend and backend for our enterprise vibe coding platform. You’ll design scalable systems, define data models, and ship features that translate enterprise needs into reliable software. You’ll integrate...Backend
- ...an API for. About the Role: This is a backend- and systems-heavy founding engineering role where \"full-stack\" means owning... ...orchestration, security, multi-tenant SaaS, agent infrastructure, MDM, ITSM, enterprise integrations, or virtualized execution # Thinks...BackendFull timeH1bWork at officeVisa sponsorshipMonday to Friday
- ...Founding Platform Engineer | AI, Distributed Systems & SaaS New York City or San Francisco Bay Area... ...Platform Engineer to help architect and build the core... ...emerging challenges in enterprise technology: ensuring AI... ...Design and build the backend systems that power a scalable...Backend
- ...Founding Senior Software Engineer (SF In-Person Preferred... ...the stack - from backend systems to real-time voice... ...LLM APIs, but architecting the intelligence layer... ...observable systems that handle enterprise-scale workloads with... ..., or enterprise SaaS Experience at an early...Backend
$150k - $250k
# Founding AI Infrastructure EngineerRemote (US) or Hybrid... ...About UsHarden is the enterprise security and... ...telemetry, and audit trails* •Architect event-driven systems... ...+ years experience in backend/platform/infra roles (... ..., or enterprise SaaS infrastructure experience...BackendFull time- ...Numeric is hiring its first senior growth leader to architect the demand generation engine that will unlock its next scale. You will own end-to-end growth, from strategy to execution, and collaborate with a seasoned content and product marketing team to convert attention...
- Reducto is seeking a Senior Growth Marketing Manager in San Francisco to build and operate programs that acquire, activate, and re-engage customers. You’ll own paid search, paid social, ABM, lifecycle campaigns, and collaborate with Product, Marketing Operations, and Sales...
- ...This is a true founding engineer role . You won... ...the system. You’ll architect and build an AI-native... ...a secure, reliable, enterprise-grade system used by... ...massive and fast-growing SaaS company. Responsibilities... ...Develop scalable backend services for document...Backend
- ...Anthropic, Llama, and Huggingface. As a founding product engineer, you will collapse... ...a single, reliable standard. You will architect backend systems in Python and FastAPI, shape the... ..., and ship the infrastructure that enterprise teams depend on to route LLM traffic across...Backend
$200k - $220k
...Description Job Description Job Title: AI Architect / FDE – Healthcare Salary: $200,000 – $... ...Engineer (FDE) to lead AI-enabled enterprise architecture, Google Cloud Platform (GCP... ...considerations. Design and develop scalable backend applications using Java and Spring Boot....Backend- ...testing platform, seeks engineers to own the agent harness and backend services that test controls across complex environments. You... ...Ideal candidates have experience with LLM-based workflows, enterprise SaaS, and end-to-end feature delivery, with a track record of ownership...Backend
$130k - $200k
...Software Engineer, Agent Delivery (Founding Team)Title of Role: Software Engineer, Agent... ...Stage of Funding: Series B — Logistics, AI, Enterprise, B2BOffice Type: OnsiteSalary: $130K–$20... ...engineering experience with a focus on backend development.Proven ability to build and...Backend- ...Build the next generation of enterprise AI software. Nth AI is building Nexus, an AI-native... ...AI into production. We’re hiring a Founding Head of Engineering to own the... ...ship complete capabilities across Nexus’s backend, orchestration, data workflows, and user...Backend
$130k - $200k
...well-funded, seed-stage B2B SaaS startup in the supply chain integrations... ...space is looking for a Founding Software Engineer to help... ...frontend (TypeScript, React), backend (Node.js), infrastructure (... ...supply chain, logistics, or enterprise integration domains (EDI, ERP...BackendWork at officeVisa sponsorship- ...than 750,000 patients worldwide. The Test Architect is a senior individual contributor and... ...rigor of a medical device QMS. This is the founding technical hire for Heartflow's Test... ...-end testing framework across frontend, backend, 3D modeling, and AI/ML systems, and for...BackendContract workFor contractorsLocal areaWorldwideRelocation
- ...re already working with large enterprise clients, generating... ...Role We’re hiring our first Founding Engineer to own and expand the... ...engine using LLMs and OCR Own backend architecture and infrastructure... ...document extraction engine Architect backend systems with...BackendWork at office
- ...CA (On-site, 5 days/week) Role We're looking for a backend-leaning Founding Engineer (0-7 years experience) who has shipped production... ...frontline point of contact for customer feedback and support enterprise deployments Write clear, maintainable code and...BackendRelocation
- ...Founding Engineer, AI — Shiplight AI Do you agree we’re living through the AI revolution... ...mission is to build the foundation for enterprise-scale automation powered by intelligent... ...Comfortable working across the stack — backend, frontend, and AI interfaces....Backend
- ...retrieval across large program datasets Implement enterprise infrastructure: SSO/SAML, role-based access, audit logging... ...we’re looking for ~5+ years building production SaaS products ~ Experience designing backend systems for multi-tenant, workflow-heavy applications...BackendFull timeRemote work
- ...AI Architect/FDE for a Healthcare client Role Type: Client-facing, hands-on engineering... .../Senior Principal Business Unit: Enterprise AI Platforms & Agentic Solutions Reporting... ...APIs, security patterns, and scalable backend design. ~ Practical experience with...BackendTemporary workRemote workFlexible hours
- ...is building the system that lets every enterprise measure how its agents perform, understand... ...improve on their own. Litmus was founded in August 2026 by Sidharth Srinivasan, who... ...You might be a fit if You're a strong backend or infrastructure engineer who has been...BackendWork at officeRelocation package
- ...at the forefront of applied AI, helping enterprises turn AI, agentic systems, and their own... ...production code across the stack — backend services, data pipelines, and the AI layer... ...small, senior teams alongside Principal Architects and Forward Deployed EngineersA growing...BackendWork at officeWorldwide
$220k - $405k
...Member of Technical Staff (Software Engineer, Enterprise Trust & Governance) Location San... ...experience, with a track record of owning complex backend systems from design through production... ...reliable, scalable, multi-tenant SaaS platforms with clear security and isolation...BackendFull time- ...Forward Deployed Engineer at Handshake AI Enterprise, you'll embed directly inside enterprise... ...data, closer lab relationships, and a founding team that moves fast — this is the role.... ...engineering experience, full-stack with strong backend depthReal-world experience building and...Backend
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