Senior Full Stack Engineer

7 days ago

Hayward Highland, United States Ikuto Full time

Senior Full-Stack Engineer – High-Growth AI SaaS Startup SoMa, San Francisco, CA | Full-Time | Onsite Salary: $200K–$325K + Meaningful Equity (1%+)Join an early-stage AI SaaS startup building an application builder that empowers business users to create custom applications where humans and AI collaborate seamlessly across enterprise workflows. You'll play a pivotal role in shaping core architecture, product development, and first production deployments, working directly with the founder and early team.About the RoleWe're seeking a Senior Full-Stack Engineer to lead product development and own major product surfaces across frontend, backend, and integration layers. This is a high-impact role where you'll directly influence product direction and help build the foundation for Lumena's platform.What You'll DoDesign and build the core application builder — the orchestration layer connecting workflows, agents, and front-end views.Develop and scale Lumena's TypeScript-based backend and modern frontend stack (React + Tailwind).Build dynamic frontend interfaces for dashboards, forms, and human-AI workflows.Collaborate with the applied engineering team to integrate automation and intelligence across systems.Shape and maintain the integration layer connecting REST APIs, SQL sources, and third-party systems.Define and enforce best practices for product engineering, architecture, and developer experience as the company scales.Who You Are (Must-Haves)4–15 years of professional software engineering experience in full-stack development.Prior experience working in early-stage startups or high-growth environments.Strong proficiency with TypeScript, Node.js, and modern frontend frameworks (React, Tailwind).Experience designing complex architectures, asynchronous workflows, and integrations.Excellent problem-solving, collaboration, and communication skills.Nice-to-HavesExperience building or integrating AI / LLM-powered applications.Familiarity with orchestration/workflow frameworks such as Temporal.Exposure to cloud platforms (AWS/GCP/Azure), containerisation, Kubernetes, and CI/CD pipelines.Experience with enterprise-grade concerns: secure hosting (VPCs), observability, identity & compliance.Why Join?Competitive salary: $200K–$325K + meaningful equity (1%+) in an early-stage company.Work directly with experienced founders and influence the product roadmap.Shape the architecture and direction of a high-impact platform powering first production deployments.Be part of a small, agile, highly motivated team at the forefront of AI and enterprise applications.

  • Senior Full Stack Engineer

    5 days ago

    Hayward, United States Velocity Tech Full time

    🚀 Full Stack Engineer (AI, Real-Time Systems, Product-Led Growth)Location: San Francisco, CA We’re an AI-first startup replacing traditional ad agencies with autonomous systems that optimize spend in real time. Our platform delivers 20–50% efficiency gains for global brands and is already managing significant enterprise spend with strong investor...

  • Full Stack Engineer

    6 days ago

    Hayward, CA, United States DataInsight Full time

    Full Stack Engineer (Django + React)Location: On-site / Hybrid (San Francisco)Compensation: Market Salary + EquityBonus: Performance-basedEmployment Type: Full-TimeExperience: Mid / SeniorAbout DataInsightDataInsight is a fast-growing, well-funded startup with strong early traction within healthcare. Our platform is reshaping how companies discover and hire...

  • Full Stack Engineer

    2 weeks ago

    Hayward, United States HEN Technologies Full time

    Job Title: Full Stack Engineer (Contract)Location: Hayward, CaliforniaEmployment Type: Short-term ContractAbout HEN TechnologiesHEN Technologies is a deep-tech company building the world’s first end-to-end intelligent fire suppression ecosystem, powered by AI, IoT, and advanced fluid dynamics. The company’s mission is to modernize how the world prevents...

  • Full Stack Engineer

    5 days ago

    Hayward, United States DataInsight Full time

    Job DescriptionFull Stack Engineer (Django + React)Location: On-site / Hybrid (San Francisco)Compensation: Market Salary + EquityBonus: Performance-basedEmployment Type: Full-TimeExperience: Mid / SeniorAbout DataInsightDataInsight is a fast-growing, well-funded startup with strong early traction within healthcare. Our platform is reshaping how companies...

  • Full Stack Engineer

    4 days ago

    Hayward, CA, United States TechLine Consulting Full time

    Full Stack Software Engineer (React / Node.js / Python) Hybrid | Remote-friendly | San Francisco Bay Area Base: $200,000–$300,000 + meaningful equity + top-tier benefits About the Company We’re a fast-growing AI/ML company building products that are pushing the frontier of what intelligent systems can do in the real world. Our platform sits at the...

  • Full Stack Engineer

    5 days ago

    Hayward, United States BioTalent Full time

    IntroductionJoin a fast-growing HealthTech company building an AI-driven data platform designed to eliminate waste and inefficiency across the U.S. healthcare system. This is a rare opportunity to contribute to technology that directly improves care outcomes and transforms how health plans and providers make decisions.As a Staff Software Engineer, you’ll...

  • Senior Full Stack Engineer

    5 days ago

    Hayward, United States Coders Connect Full time

    Coders Connect are partnering with an exciting, well-funded audio AI startup backed by $25M in Series A funding. Operating at the forefront of AI research and infrastructure, this company builds high-quality audio datasets and tooling for the world’s top tech giants.They’re hiring a Senior Full Stack Engineer to help build and scale data-centric products...

  • Full Stack Engineer

    5 days ago

    Hayward, United States Raydar Full time

    📍 San Francisco, CA (On-site, SOMA) 💰 $175K–$225K + 0.75–1% Equity 🕹 60–70% Frontend / 30–40% Backend 🚫 Visa sponsorship not availableAbout the RoleWe are supporting a client seeking an experienced Full Stack Software Engineer with 3–4 years of experience (around IC4 level). This role is ideal for a product-focused engineer with strong...

  • Senior Full Stack Engineer

    5 days ago

    Hayward, CA, United States Attis Full time

    Senior Full Stack Engineer - React / Node / APIs / Software (Hybrid) A Senior Full Stack Engineer is required to join an exciting early stage startup in the San Francisco East Bay. This is a high-impact opportunity to build a secure cloud platform from scratch, powering a new generation of electric vehicles for global markets. Enjoy the agility of a...

  • Founding Full Stack Engineer

    7 days ago

    Hayward, United States farda. Full time

    Role Title: Founding Full Stack EngineerStart Date: 12/15/2005Compensation: Meaningful EquityFarda is reinventing medication adherence with a smart vial and AI-powered platform that automatically tracks ingestion, detects deviations, and syncs real-time data to clinicians and study teams. Patients get a simple, portable device. Biotechs get the cleanest...