DEV.co
San Jose, CA · Custom Software + AI

Custom software for San Jose — built the AI-native way.

We pair senior engineers with an AI-accelerated delivery model to ship custom software for Silicon Valley operators — semiconductor companies, enterprise SaaS, and AI-first teams — without the fragile output that gives AI a bad name.

Senior-only engineering · AI-accelerated delivery · you own 100% of the code

AI changed the economics of custom software. We rebuilt our process around it.

San Jose is the heart of Silicon Valley — the country's densest concentration of enterprise SaaS, semiconductors, infrastructure, and AI engineering, and the most competitive market to hire senior talent in. Pay is top-of-band, equity-heavy, and hires take six-to-nine months when they don't choose a competing offer. AI changes the math, but only when senior people own the parts AI gets wrong.

On a South Bay enterprise SaaS, semiconductor, or AI build, AI handles the repetitive 70% — scaffolding, schemas, dashboards, CRUD, glue. The 30% AI gets wrong is the part your platform team will catch on the first PR: scale assumptions copied from a hyperscaler talk but wrong for your stage, RBAC edges that fail in a multi-region rollout, agent loops with no upper bound, and migrations that look fine until they hit a Fortune-500 customer's data. Raw AI output writes those bugs cleanly.

We build for South Bay operators — semiconductor companies digitizing operations and supply chain, enterprise SaaS teams scaling for mid-market and Fortune 500 buyers, post-Series-B platforms paying down tech debt, and modernization projects on legacy enterprise stacks. Our model: AI handles scaffolding and the repetitive 70%; a senior engineer owns architecture, security, and signs off on every change.

Show, don't tell

AI writes the first draft. A senior engineer signs off.

Every change runs through review for security, tests, and architecture before it ships — that review is the product.

delivery.tstypescript
const draft = await ai.generate(spec)          // minutes, not daysreview(draft, { security: true, tests: true, architecture: true })// ✗ rejected: agent loop with no upper bound on tool calls → bounded depth + cost ceiling + replay test// ✓ merged: explicit region pinning on multi-region migration, RBAC test matrix on every protected endpoint
Every change
AI velocity + human judgment
tests + security review built in
you own 100% of the result

On a South Bay enterprise SaaS or AI build, the failure modes are unbounded agent loops, multi-region drift, and RBAC edge cases. Senior review catches them before a Fortune-500 customer or your platform team does.

What we build for San Jose companies.

AI

AI applications

Copilots, RAG, search, and agents grounded in your data, with guardrails and evals.

Product

SaaS platforms

Multi-tenant products with auth, billing, and dashboards — MVP to scale.

Modernize

Modernization

Move legacy systems onto a modern, maintainable stack — incrementally, no big-bang.

Fintech

Fintech & payments platforms

Customer-facing apps, ledgers, and risk pipelines for regulated, data-heavy products.

Internal

Internal tools & copilots

Operations tooling that replaces the spreadsheet-and-tribal-knowledge workflow.

Web

Web apps & portals

Fast, custom applications and customer portals on a modern stack.

Senior, on-shore, AI-accelerated

A senior team that moves at AI speed.

You work with senior engineers in Pacific Time who own architecture, scale assumptions, and code quality at your platform-team bar — fitting into a Santa Clara enterprise standup, a Sunnyvale infra review, or a Cupertino product PR — not a junior pool with raw AI output bolted on.

From Santa Clara to Sunnyvale to Cupertino, senior engineers are top-of-band, equity-rich, and constantly being recruited by the next AI startup or hyperscaler team. An AI-native team gets you shipping this week, ramps monthly, and doesn't add an FTE to your South Bay office.

Talk to an engineer

Traditional San Jose dev shop vs. AI-native.

Traditional AgencyDEV.co (AI-native)
Time to working softwareMonthsDays to weeks
CostFull senior rates, all hoursLower — AI removes the rote work
Code qualityGood (if senior)Same bar — every change reviewed
AI riskContained by senior review + tests
You own the codeUsuallyAlways — full repo on day one
Scales with youSlow to staff upFlex up or down monthly
2–3×
faster than traditional development
1 wk
to a working prototype
100%
code ownership at handoff
30 days
post-launch support included

Common questions from San Jose teams.

Do you work with San Jose companies?
Yes — we serve San Jose, San Francisco, Fremont, and Oakland companies with senior, on-shore engineers in Pacific Time. Most collaboration is remote-first, with on-site available for kickoffs and key milestones.
Can you work with our existing platform / SRE team?
Yes — augmentation is the default mode. We slot into an existing repo, follow your patterns, and your senior engineers review our PRs the same way they'd review an internal team's. Or we run the build end to end and hand it over with the on-call rotation set up.
Can you operate at our platform team's bar?
Yes — that's the model. We slot into your repo, follow your patterns, and your platform team reviews our PRs the same way they'd review an internal team's. If a senior engineer on your side wouldn't merge it, we don't ship it.
Is AI-built software production-ready?
Yes — when a senior engineer reviews every output, adds tests, and hardens it. The horror stories come from shipping raw AI code unsupervised. We don't, and we support what we ship.
Will we own the code?
100%, from day one. We deliver to a repository you control — no proprietary platform, no lock-in.
How fast can we start?
Usually within days. A short scoping call defines the build, the timeline, and a fixed quote.
Can you work with our existing team?
Yes — we augment in-house teams, review their work, and set standards, or run the build end to end. We flex to how you work.

Let's build it — San Jose.

Tell us what you're shipping. We'll give you a senior engineer's read, an honest timeline, a fixed quote, and tell you whether AI-native is the right fit for your build.