Logistics
Dispatch console
A real-time, offline-first routing console for a regional carrier — live vehicle state, drag-to-reassign stops, and a hardened sync layer for dead zones.
Custom web & mobile · South Weymouth, MA
Hand us the build you keep deferring.
Hephaestus Labs designs, builds, and ships production web and mobile applications for startups and mid-market teams — scoped and billed per milestone, from discovery through launch.
TypeScript end-to-end
Two-week build increments
Staging demo every sprint
Invoiced per milestone
What we build
We treat an application like a casting — scope the mold first, pour once, finish by hand. No open-ended retainers, no mystery line items.
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01 Web applications
React and TypeScript front ends on a Node/PostgreSQL core — dashboards, portals, internal tools, and customer-facing platforms built to carry real load.
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02 Mobile applications
React Native for iOS and Android from one codebase: offline-first sync, push, biometric auth, and App Store / Play submission handled.
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03 APIs & infrastructure
Typed REST and GraphQL services, auth, background jobs, and Terraform-managed AWS environments with CI you can read.
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04 Design systems
Component libraries and accessible UI primitives documented so your team can extend the product without us in the room.
We bill per milestone so you can halt a build at a known line — not discover the real cost after it ships.— How Hephaestus Labs quotes every engagement
Selected builds
Systems we take on
Fintech
Onboarding & KYC flow
A multi-step identity-verification and account-funding flow with resumable sessions, audit trails, and a typed API contract the compliance team could review line by line.
Retail / DTC
Inventory sync
A warehouse-to-storefront sync service reconciling Shopify orders against physical stock in near-real time, with conflict handling instead of silent overwrites.
Health
Clinical intake app
A HIPAA-aware mobile intake with encrypted local storage, structured forms, and signed hand-off to an existing EHR — built to pass a security review before launch.
Representative of the engagements we scope — ask us for current references on your call.
Our toolchain
Standardized so handoff is painless
TypeScript
Strict mode everywhere — one language across client, server, and infra.
React / Next
Component-driven web UIs with server rendering where it pays off.
React Native
Single codebase for iOS and Android with native modules as needed.
Node.js
Typed REST/GraphQL services and background workers.
PostgreSQL
Relational core with migrations checked into the repo.
AWS
ECS, RDS, and S3 — provisioned, not clicked.
Terraform
Infrastructure as code so environments rebuild from scratch.
Playwright
End-to-end tests that run in CI on every pull request.
How a project bills
Three milestones, each a fixed checkpoint
You approve a scope and price per milestone before we start it. Figures below are typical starting points; final quotes follow a discovery call. Invoiced net-15 by ACH or wire.
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01
Discovery
A 2–4 week engagement that de-risks the build: product spec, data model, architecture diagram, and a clickable prototype you own outright.
- Written spec & acceptance criteria
- System architecture & estimate for phase 02
- Interactive Figma prototype
From $7,400 fixed fee Start discovery -
02
Development
The build, run in two-week increments with a working staging demo at the end of each. You see progress you can click, not status decks.
- Front end, API, and database
- Automated tests & CI pipeline
- Fortnightly demo + invoice
From $42,000 scoped per sprint Scope a build -
03
Launch
Hardening, production deploy, monitoring, and a documented handoff — plus 30 days of stabilization so launch week doesn't become your emergency.
- Load & security review
- App Store / Play submission
- 30-day stabilization window
From $11,500 fixed fee Plan a launch
Talk to an engineer