Custom Software Development in Seattle, WA
Seattle's software economy is anchored by Amazon and Microsoft, surrounded by a fast-moving SaaS and dev-tools ecosystem and a steady current of bootstrapped indie SaaS founders working out of Capitol Hill and Fremont.
Most companies here speak fluent cloud — what they need is senior-quality custom development at a price point that does not require a full FTE hire. QUANT LAB USA is built for that.
Why Seattle businesses choose QUANT LAB USA
Seattle's software economy is unusually consolidated. Amazon employs over 60,000 in the metro across South Lake Union, the Spheres, and the Bellevue expansion. Microsoft's Redmond campus anchors a second cluster across Lake Washington. Around them sits a deep dev-tools and cloud-native SaaS ecosystem — Snowflake's Bellevue office, Datadog's presence, Auth0/Okta, Tableau (now part of Salesforce), Smartsheet — plus the indie SaaS and bootstrapped-founder pool working out of Capitol Hill, Fremont, and Ballard. Boeing's Everett operations anchor an aerospace supplier network that stretches across Snohomish County. The Port of Seattle and the Port of Tacoma together form the third-largest container gateway on the West Coast, generating logistics-tooling demand for inland operators. And the AI/ML labor market — Allen Institute for AI, OpenAI's expanding Seattle office, Microsoft Research — keeps pushing the technical bar buyers expect from outside vendors.
Most contract shops in the Pacific Northwest are either expensive enterprise consultancies or thin freelancer marketplaces. We sit in the middle. Senior, founder-led, fixed-scope. Our stack is Docker-native, cloud-portable, and built on modern TypeScript — exactly what a Seattle-grade engineering reviewer expects to see. For founders here, that translates to senior-quality engineering at a contract price tier well below hiring a full-time engineer, on a stack the eventual full-time hire can pick up without translation.
What we ship for Seattle clients
SaaS Products & Dev Tools
Next.js + TypeScript builds that fit naturally into AWS and GCP environments. Typical: $25k–$90k.
Stripe & Licensing Infrastructure
Subscription billing, usage metering, license key issuance, and developer-friendly API surfaces. Typical: $10k–$30k.
Cloud Infrastructure & IaC
Terraform, AWS CDK, Docker-native deployments, and cloud-portable architectures. Typical: $12k–$40k.
Penetration Testing
Web app, cloud-perimeter, and AD engagements before enterprise procurement reviews. Typical: $10k–$30k.
Aerospace & Logistics Adjacent Tooling
Custom dashboards and supplier tooling for the Boeing supplier network and Port of Seattle operators. Typical: $20k–$80k.
AI/ML Wrapper SaaS
Production-grade OpenAI, Anthropic, and Bedrock-backed products with cost controls and rate-limit handling. Typical: $20k–$70k.
Selected work
Live work includes J5 Sales OS (AI-powered lead-gen and pipeline SaaS combining Google Places, concurrent email scraping, and OpenAI qualification), UEhub (education platform), and HobbsPeak (headless commerce platform with live S&S Activewear catalog sync and an AI-assisted artwork digitizing pipeline). The HobbsPeak build in particular demonstrates the technical bar Seattle reviewers expect: production OpenAI integration, server-side catalog sync, vector tracing pipelines, and a full admin console replacing five separate tools.
- Docker-native, cloud-portable builds
- Cleanly deploys to AWS, GCP, and Vercel
- Pacific morning overlap from Georgia HQ
- Pen testing for enterprise procurement reviews
- Modern Next.js / TypeScript / PostgreSQL / Docker stack
How we work remotely with Seattle teams
Seattle sits three hours behind Georgia HQ, which means we work your morning. We run standups at 11am ET / 8am PT for most engagements, with afternoon Pacific reserved for async code review and our late afternoon work. For engagements above ~$25k we fly into SEA for an on-site kickoff afternoon — South Lake Union, Bellevue, Redmond, or Kirkland. Build cycles run weekly with a Friday staging URL, written notes, and the next-week plan. Most Seattle engagements close on fixed-scope, fixed-price proposals, with code reviewed before every merge and architecture docs that hold up to an Amazon or Microsoft engineer's scrutiny. Full code, infrastructure, and account handover at acceptance — the eventual full-time hire picks up the codebase without translation.
FAQ
Do you work with AWS-heavy stacks?
Yes — most of our builds are cloud-portable and deploy cleanly to AWS, GCP, and Vercel. Our default deploy target for Seattle clients is AWS via Docker, with IaC managed in Terraform or AWS CDK as preferred.
Can you ship a Stripe-billed SaaS MVP for a Seattle founder?
Yes — that is our most common SaaS engagement. Subscription billing, usage metering, license keys, and customer self-serve portals on a Docker-native stack the next engineering hire can pick up cleanly.
Time-zone overlap?
Georgia HQ — comfortable working morning through early afternoon Pacific. Our late morning is your early morning, and our late afternoon is your mid-morning. We run standups at 11am ET / 8am PT routinely.
Do you work with Boeing supplier-network or aerospace operators?
Yes — supplier portal, compliance tracking, and tier-N supplier visibility tooling is in scope. ITAR-aware workflows are scoped per requirement.
Are you familiar with WA state B&O tax and SaaS taxability?
Yes — Washington has a unique B&O tax structure and treats SaaS as taxable for retail sales tax in many cases. We wire Stripe Tax correctly at billing time so multi-state nexus is handled.
Can you fly in for an in-person kickoff?
Yes, for engagements above ~$25k. We fly into SEA for kickoffs and major milestones — South Lake Union, Bellevue, Redmond, and Kirkland are all easy.
Do you support AI/ML product builds?
Yes — production OpenAI, Anthropic, and AWS Bedrock-backed builds are routine in 2026. We handle rate limits, prompt versioning, cost monitoring, and fallback chains as standard.
How do you handle code review and Seattle-grade engineering standards?
Every build runs ESLint, Prettier, strict TypeScript, and includes a CI pipeline before any deploy. Architecture docs and a README that an Amazon or Microsoft engineer would not laugh at are part of every handover.
Industries we serve in Seattle
All industries- SaaS
Multi-tenant architecture, billing, onboarding, customer success tooling.
- Fintech
Trading systems, brokerage integrations, Stripe-grade payment infrastructure.
- Healthcare
HIPAA-aware platforms, intake, scheduling, ops dashboards.
- E-Commerce
Custom carts, subscription billing, Shopify alternatives and migrations.
Reading for Seattle founders
All postsBuilding Multi-Tenant SaaS on Postgres RLS
Row-level security patterns for isolating tenant data without separate databases.
Read postNext.js vs Remix vs SvelteKit (2026)
Framework selection criteria for production web apps.
Read postBuild vs Buy Software: A 2026 Decision Framework
Three-year TCO math, the 80/20 rule, and a 12-question checklist.
Read post
Related services & nearby cities
Cloud Infrastructure
AWS/GCP-portable, Docker-native builds.
Payments & Licensing
Stripe-billed SaaS infrastructure.
Stripe Integration
Subscription, metered, and licensing.
Web Applications
SaaS MVPs and customer-facing builds.
Penetration Testing
Web app and cloud-perimeter engagements.
License Server
Software licensing infrastructure.
Subscription Billing
Recurring revenue infrastructure.
Case Study: HobbsPeak
Headless commerce with AI digitizing.
Case Study: J5 Sales OS
AI prospecting and pipeline SaaS.
Custom CRM Development Guide
Pillar resource — build vs. buy.
San Francisco, CA
Bay Area SaaS, fintech, and quant.
Austin, TX
Startup SaaS and quant tooling.
Start a Project
Scoping calls, fixed-quote proposals.