Seattle startups hiring
software engineers.
50 startups and scale-ups in Seattle are hiring software engineers right now, with 186 live roles between them, 71 of them opened in the last 30 days. Pick the ones you want and Haystack's AI agent fills in each employer's application for you.
Free to get started. Set up takes about three minutes.
- AIAnduril IndustriesScale-up · 1,001-5,000 staff44 roles

- BRBrexScale-up · 1,001-5,000 staff13 roles

- COCompassScale-up · Hybrid11 roles
- DADatabricksScale-up · 10,000+ staff11 roles

- BRBrincStartup8 roles

- TRTruvetaStartup · 201-500 staff7 roles

and 44 more companies on the list
50 companies hiring now
Ranked by live roles (backend, full-stack, frontend, mobile, DevOps, security and QA engineers, and engineering managers). Every company is a startup or scale-up; recruitment agencies are left out. Press Auto apply on any role and Haystack's AI agent fills in that employer's form for you.
The top 40 of 50 companies, most live roles first.
Anduril Industries builds AI-powered security architecture for the United States and its allies, rapidly developing and deploying advanced hardware and software solutions.
- Senior Software EngineerHybrid · Opened yesterdayAuto apply
- Software Engineer, Connected Warfare (Active Clearance)Hybrid · Opened 5 days agoAuto apply
- Systems Safety EngineerHybrid · Opened 11 days agoAuto apply
Replied to 71% of the applications Haystack's agent sentAll 44 roles at Anduril Industries
Brex provides a modern financial stack to empower growing businesses, simplifying operations and accelerating growth with integrated financial tools.
- Engineering Manager, SalesforceHybrid · Opened 6 days agoAuto apply
- Staff Software Engineer - Identity & Access ManagementHybrid · Opened 4 weeks agoAuto apply
- Staff Software Engineer, AcquisitionHybrid · Opened 4 weeks agoAuto apply
Compass aims to revolutionise the real estate industry with an end-to-end platform for residential real estate agents, and to transform education with smart school management technology.
- Staff Security Engineer - AIHybrid · Opened 3 days agoAuto apply
- Senior Security Engineer - CloudHybrid · Opened 3 days agoAuto apply
- Senior Software Engineer - Mobile, iOSHybrid · Opened 3 days agoAuto apply
Databricks empowers customers to solve data problems by providing a unified data and AI platform that supports analytical and operational workloads.
- Sr. Developer Advocate, Open Source — OmnigentHybridAuto apply
- Engineering Manager - UI PlatformHybridAuto apply
- Sr. Developer Advocate, AI and Machine LearningHybridAuto apply
Replied to 75% of the applications Haystack's agent sentAll 11 roles at Databricks
Brinc accelerates next-generation businesses by bridging ecosystems, deploying capital intelligently, and enabling founders with tools to thrive.
- Fullstack Software Engineer, LiveOpsHybrid · Opened 4 weeks agoAuto apply
- Senior DevOps EngineerHybrid · Opened 4 weeks agoAuto apply
- Senior Backend Software Engineer, LiveOpsHybrid · Opened 6 weeks agoAuto apply
Truveta is a health data platform created by leading health systems that aims to improve patient care and accelerate medical research.
- Software Engineer - Security & TrustHybrid · Opened 12 days agoAuto apply
- Senior Software Engineer - Normalization PlatformHybrid · Opened 13 days agoAuto apply
- Principal Software Engineer - Clinical AnalyticsHybrid · Opened 3 weeks agoAuto apply
Gradial helps enterprise marketing teams automate manual operations and manage marketing execution using AI, increasing speed, visibility, and control.
- Software EngineerHybrid · Opened 6 days agoAuto apply
- Staff Security Engineer, Product & PlatformHybrid · Opened 7 days agoAuto apply
- Staff Security Engineer, AIHybrid · Opened 7 days agoAuto apply
BlackSky provides real-time geospatial intelligence and global monitoring services using Earth observation satellites and an AI platform.
- Senior Engineer - Embedded/Flight SoftwareHybrid · Opened 7 days agoAuto apply
- Staff Engineer, Flight Software/Embedded SoftwareHybrid · Opened 10 days agoAuto apply
- Senior Engineer, Mission PlanningRemote · Opened 3 weeks agoAuto apply
To protect service members and civilians with intelligent systems, developing AI pilots for aircraft and revolutionising aerospace and defense applications.
- Staff Engineer, Mission Systems (R5893) with Security ClearanceHybrid · Opened 10 days ago
- Staff Software Engineer, Perception (R5421) with Security ClearanceHybrid · Opened 5 weeks ago
- Mission Systems Software Engineer (R5888) with Security ClearanceHybrid · Opened 6 weeks ago
Hiya protects individuals and businesses from unwanted and fraudulent calls and texts, ensuring safer and more efficient communication through its intelligent platform.
- Head of Forward EngineeringHybrid · Opened 10 days agoAuto apply
- Senior Mobile Engineer, Kotlin and Cross-PlatformHybrid · Opened 7 weeks agoAuto apply
- Senior GTM Engineer – Web & AIHybridAuto apply
NexHealth aims to accelerate innovation in healthcare by building tools and infrastructure that support doctors and developers in delivering exceptional patient experiences.
- Senior Software Engineer, Fullstack, Practice EngHybrid · Opened 5 days agoAuto apply
- Platform Engineering Manager, DataLakeHybrid · Opened 8 weeks agoAuto apply
- Senior Software Engineer, SecurityHybridAuto apply
Yoodli AI Roleplays provides an AI-powered platform for practicing public speaking and communication skills to help people communicate with confidence.
SageOx builds a collaborative hivemind platform with shared memory and coordination tools to keep human teams and AI agents aligned and productive.
- Senior Product Engineer, Full StackOn-site · Opened 4 weeks agoAuto apply
- Forward Deployed EngineerOn-site · Opened 4 weeks agoAuto apply
- Senior Product Engineer, HardwareOn-site · Opened 4 weeks agoAuto apply
Aurelian builds AI tools for public safety answering points (PSAPs) to help telecommunicators handle calls more effectively and support communities.
- Software Engineer (New Grad)On-site · Opened 3 weeks agoAuto apply
- Forward Deployed EngineerOn-site · Opened 3 weeks agoAuto apply
- Engineering ManagerOn-siteAuto apply
Red Cell Partners builds and scales technology companies to drive innovation and reinvigoration in healthcare, defence, and cyber systems.
- Director, Production and Infrastructure EngineeringRemote · Opened yesterdayAuto apply
- Senior/Staff Software Engineer (Platform and Execution Model)Remote · Opened 3 weeks agoAuto apply
- Senior/Staff DevOps Engineer, Platform InfrastructureHybrid · Opened 4 weeks agoAuto apply
Trase Systems empowers enterprise leaders to harness the full potential of AI without complexity, delivering trustworthy and predictable AI performance.
- Director, Production and Infrastructure EngineeringRemote · Opened yesterdayAuto apply
- Senior/Staff Software Engineer (Platform and Execution Model)Remote · Opened 3 weeks agoAuto apply
- Senior/Staff DevOps Engineer, Platform InfrastructureHybrid · Opened 4 weeks agoAuto apply
Endurance Energy
- Senior/Principal Software EngineerOn-site · Opened 3 weeks agoAuto apply
- Integration & Test SpecialistOn-siteAuto apply
- Super EngineerOn-siteAuto apply
Reliable Robotics is pioneering autonomous flight solutions for cargo aircraft to reduce operating costs and increase the accessibility of air cargo.
- Sr. Embedded Software Engineer, RadarHybrid · Opened 13 days agoAuto apply
- FPGA ManagerHybrid · Opened 6 weeks agoAuto apply
- Embedded Software Engineer, RadarHybrid · Opened 6 weeks agoAuto apply
Tin Can builds screen-free devices and services to help children connect with family and friends safely, without smartphones.
- Software Engineer, Core ProductOn-site · Opened 11 days agoAuto apply
- Software Engineer, CommunitiesOn-site · Opened 5 weeks agoAuto apply
- Software Engineer, GrowthOn-site · Opened 5 weeks agoAuto apply
Nuance Labs develops photorealistic, real-time AI avatars with emotional intelligence for consumer-grade applications.
Rune Technologies builds mission-critical software and hardware for military logistics and sustainment, focusing on AI-enabled command and control platforms.
- Forward Deployed EngineerOn-site · Opened 3 weeks agoAuto apply
- Backend Software Engineer - Sensors and IntegrationsHybrid · Opened 4 weeks agoAuto apply
To be the reliable foundation of every developer's toolbox.
- Senior Engineering Manager, Observability EngineeringRemote · Opened 3 days agoAuto apply
- Senior Software Engineer, Nexus ServerRemote · Opened 3 days agoAuto apply
Synthesia aims to make video production more accessible and efficient through its artificial intelligence video generation platform.
- Staff/Principal Developer AdvocateHybrid · Opened 4 days agoAuto apply
- Principal/Staff Software EngineerHybrid · Opened 7 weeks agoAuto apply
The company aims to accelerate positive impact in critical industries through AI transformation, focusing on clean energy, decarbonisation, climate risk, energy systems, and global economics.
- Senior Software Engineer (AI Inference & Runtime Platform)Remote · Opened 8 weeks agoAuto apply
- Senior Product Engineer (AI, Full-Stack)Remote · Opened 8 weeks agoAuto apply
Hubble Network is building a global Bluetooth network for machine-to-machine connectivity using satellites to enable global connectivity for IoT devices.
- Engineering Manager, Wireless and Digital DesignHybrid · Opened 5 weeks agoAuto apply
- Engineering Manager, RF HardwareHybrid · Opened 7 weeks agoAuto apply
Nooks is an applied AI lab on a mission to democratise growth by redefining the equation between human intuition and machine intelligence.
Taxbit provides cryptocurrency tax compliance software, automating the complex process of calculating and reporting cryptocurrency gains and losses for individuals and businesses.
- UI Engineer, SeattleHybrid · Opened 5 weeks agoAuto apply
- Staff Software Engineer, Cloud Infrastructure & Systems Engineering, SeattleHybrid · Opened 6 weeks agoAuto apply
Upbound powers the AI-native enterprise with a foundational platform layer that helps teams provision, operate, and adapt infrastructure at scale.
- Sr. Engineering ManagerHybrid · Opened 6 weeks agoAuto apply
- Senior Software EngineerHybrid · Opened 7 weeks agoAuto apply
Anduril Industries aims to transform US and allied military capabilities with advanced AI-powered defense technology.
- Systems Safety EngineerHybrid · Opened 2 days ago
Kickmaker partners with innovators to turn ambitious ideas into market-ready products, supporting high-tech projects from prototype to production.
- Embedded Software EngineerOn-site · Opened today
Lightning AI aims to accelerate the development of custom AI models by providing tools and infrastructure to simplify building, training, and deploying machine learning solutions.
- Senior Software EngineerHybrid · Opened 3 weeks agoAuto apply
Modern Family Law helps individuals navigate family legal issues, providing compassionate representation in divorce, child custody, and support cases.
- Senior Frontend React EngineerHybrid · Opened 4 days agoAuto apply
Outreach provides an agentic AI platform for revenue teams to automate tasks, gain insights, and improve sales engagement and forecasting.
- Staff Software Engineer, Identity and Access PlatformHybrid · Opened 2 days ago
Rubrik provides cloud data management, ransomware recovery, and data governance solutions for IT and cybersecurity professionals.
- Cloud Architect, Product ManagementRemote · Opened 4 days agoAuto apply
Speechify aims to remove barriers to learning and productivity through its Voice AI Assistant technology.
- Tech Lead, Android Core Product - Seattle, WA, USAHybrid · Opened 3 weeks agoAuto apply
Vailexa provides customised IT staffing and talent solutions to help organisations build high-performing teams at scale.
- Senior Morpheus Architect (Senior Cloud Migration Architect – HPE MorpheusHybrid · Opened 3 days agoAuto apply
Flexe aims to transform the logistics industry by providing an on-demand warehousing and fulfillment network, helping businesses optimise their supply chains.
- Software Development Engineer IIHybrid · Opened 6 weeks agoAuto apply
Onebrief provides AI-powered software for military planning and operational coordination, transforming long documents into concise summaries.
- Outcome Engineer - Seattle, WAHybrid · Opened 6 weeks agoAuto apply
Ravenna is building an AI-native service desk to disrupt legacy systems.
- Senior Frontend EngineerHybrid · Opened 7 weeks agoAuto apply
Ridealso provides a platform for managing and optimising ride-sharing services and manufactures electric bikes and modular accessories.
- Senior Frontend Engineer, Design Systems & CommerceOn-site · Opened 7 weeks agoAuto apply
Every startup has its own application form.
Applying to ten of these companies means ten careers sites and ten forms, each asking the same things in a different order. Haystack's AI agent fills them in from your CV and your answers, and asks you when a question needs you.
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Interview rate: candidates invited to interview within 14 days of their first application. Fields measured across applications the agent sent in the last 30 days. Hours back assume 15 minutes an application by hand.
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Questions about this list
Which startups are hiring software engineers in Seattle?
As of October 2026, 50 startups and scale-ups in Seattle are hiring software engineers, with 186 live roles between them. The most are at Anduril Industries, Brex, Compass, Databricks, Brinc. The full list on this page is rebuilt every day from the employers' own careers sites.
How is this list made?
Haystack reads the careers sites of more than 30,000 employers every day. This list takes the live roles in Seattle for backend, full-stack, frontend, mobile, DevOps, security and QA engineers, and engineering managers at companies recorded as startups or scale-ups, leaves out recruitment agencies, and ranks the companies by how many of those roles they have open.
Can I apply to all of these at once?
Not in one click, and you wouldn't want to. With Haystack Auto Apply you upload your resume once and pick the roles you want; Haystack's AI agent then fills in and submits each employer's own application form, asks you when a question needs your answer, and every reply lands in your Haystack inbox. Nothing is sent without your say-so.
Your resume once.
Then every role that fits.
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