Senior Engineering Team

Custom software when no platform fits.

Mobile apps, real-time systems, compliance-bound builds, bespoke admin tools. React Native + Node + Postgres on AWS, or whatever the constraint actually demands. We build custom when off-the-shelf hits a real wall — and we say no when it doesn't.

Platform deep dive · Custom Engineering

Our honest read on Custom Engineering.

When off-the-shelf platforms hit a wall, we build from scratch. React Native + Node + Postgres, or whatever the constraint actually demands — but only when no platform fits.

Best for
  • iOS + Android apps
  • Real-time data systems
  • Compliance-bound builds
  • Bespoke admin tools
Not for
  • Marketing brochure sites
  • Standard B2B SaaS pages
  • Sub-$50k budgets
  • 2-week MVP deadlines
Custom engineering is the answer when off-the-shelf platforms hit a real wall — usually compliance requirements (HIPAA, SOC2, PCI), real-time data delivery, or multi-platform native apps. The trade-off is time and money: a real custom build is 12+ weeks and 5–6 figures minimum. We turn down ~half the custom-build pitches we get; if Webflow or Shopify fits, we say so.
Prizor AITech engineering After ~9 years building on Custom Engineering

Custom Engineering vs the alternatives

Side-by-side on the 10 dimensions clients actually ask about. No vendor spin — these numbers come from our own builds.

Dimension Custom Engineering No-Code (FlutterFlow / Bubble) Retool In-house team Offshore agency
Build flexibility
Multi-platform native
Backend control
Real-time / WebSockets
Compliance-ready (HIPAA/SOC2)
AI / LLM integration depth
Pricing (typical project) $50k–500k $5–25k $10–30k $200k+ /yr $30–150k
Time to MVP 8–16 wks 2–4 wks 1–2 wks 4–12 wks 6–16 wks
Long-term maintenance Medium High* Low Low High
Code ownership Full Limited Limited Full Varies

* No-code platforms (Bubble, FlutterFlow) get expensive at scale and create vendor lock-in — your "free MVP" becomes a $500/mo subscription you can't migrate off without rebuilding from scratch. Pricing ranges are typical agency rates for the engagement type, not floor / ceiling.

When we don’t recommend Custom Engineering

Custom Engineering is a great tool — for the right job. Here’s where we’d point you elsewhere, even when it costs us the project.

5-page marketing brochure site?

Webflow or WordPress

Building a brochure site as custom engineering is the most expensive form of self-sabotage. $50k for what Webflow ships in 3 weeks for $5k.

MVP in 2 weeks under $10k?

FlutterFlow, Bubble, or Retool

A real custom build is 8+ weeks minimum once you account for discovery, design, infrastructure, and QA. No-code is the right tool for "validate the idea this month."

Standard D2C e-commerce store?

Shopify

If your business model is "sell physical product online," Shopify solves it for $79/mo. Building custom commerce is a 6-month project to recreate what already exists.

Internal admin tool, used by 5 people?

Retool, Tooljet, or Budibase

Custom backends for internal tools is overkill when the tool is 10 CRUD screens and a dashboard. Retool ships that in days, not months.

The stack we’d actually build

A real Custom Engineering project rarely lives alone. Here’s the typical integration stack for a production build.

Custom Engineering stack architecture Custom Stack at the center, with 4 integration satellites connected by data flows. Custom Stack React Native + Node React Native iOS + Android apps $0 OSS Next.js Web app + API $0 OSS Supabase Postgres + Auth + RT $25/mo Vercel Hosting · Edge · CI/CD $20/mo
  • Core platform
  • Best-in-class integrations
  • Real-time sync

Total tooling cost: ~$45/mo for the running infrastructure. But the real cost is engineering hours — typically 200–800 hours for a production-grade custom build before you count maintenance. That’s the line item that decides if custom is the right call.

What else we can build on Custom Engineering

Custom engineering covers everything no off-the-shelf platform can deliver. Mobile apps that need native performance, backends with strict compliance requirements, real-time systems that scale. Here's the breadth.

React Native

Cross-platform iOS + Android with one codebase — 80% shared code, native performance.

  • iOS
  • Android
  • Cross-platform

Flutter

Single codebase for iOS, Android, web, desktop — Google's framework with Dart.

  • iOS
  • Android
  • Web

Native iOS / Swift

When the app needs CoreML, ARKit, Live Activities, or Apple Watch — native-only territory.

  • Swift
  • iOS
  • Native

Native Android

Kotlin + Jetpack Compose for Android-only features (widgets, deep Android integration).

  • Kotlin
  • Compose

Node.js / Express

JavaScript runtime for APIs — fast iteration, shares types with React frontend.

  • Node
  • TypeScript

Python / FastAPI

When the workload needs ML, data science, or AI integrations — Python ecosystem wins.

  • Python
  • AI
  • ML

GraphQL APIs

Type-safe queries, single endpoint, federated schemas — Apollo or Hasura.

  • GraphQL
  • Apollo

PostgreSQL

Relational database with JSONB, full-text search, vector embeddings, RLS.

  • SQL
  • Database

WebSockets / Realtime

Live presence, multiplayer cursors, chat, live dashboards — Supabase Realtime or Pusher.

  • WS
  • Realtime

AI / LLM Integrations

OpenAI, Anthropic, custom RAG pipelines, vector search, AI-powered features.

  • AI
  • LLM
  • RAG

Background Jobs

BullMQ, Inngest, Trigger.dev — long-running tasks, scheduled jobs, retries.

  • Jobs
  • Queues

HIPAA / SOC2 Builds

Compliance-ready architecture from day one — audit logs, encryption, access control.

  • Compliance
  • Security

Don’t see what you’re building? Tell us about it — most of what we ship isn’t on this list.

The actual offer

Two ways we ship Custom Engineering work.

The deliverable is the same — production-grade Custom Engineering builds backed by ~9 years on the platform. What changes is whose name goes on the project. Pick the engagement model that fits.

For Agencies · White-label

Your name on it. Our hands on it.

We become your invisible Custom Engineering team. You stay client-facing; we handle design, build, and delivery.

  • Custom Custom Engineering builds to your Figma — or full Figma → Custom Engineering end-to-end
  • Your branding on every deliverable; your client never sees our name
  • NDA signed pre-kickoff; collaboration inside your Slack and your Notion
  • Direct line to a senior dev — no handoff to junior offshore
  • Optional white-label maintenance retainer once sites go live

Engagement Hourly or fixed-project. Most agency builds run 2–8 weeks per site, depending on scope.

For End Clients · Direct

From kickoff to handoff. One team.

Full engagement: discovery, design, build, launch, and ongoing care. One point of contact, ~9 years on Custom Engineering.

  • Discovery + content audit + scoped proposal in week 1
  • Figma design + Custom Engineering build with weekly review cadence
  • CMS / admin training + handoff documentation at launch
  • Performance + SEO + accessibility baseline before sign-off
  • Optional care retainer for ongoing iteration after launch

Engagement Project-based or monthly retainer. Most direct engagements run 4–12 weeks end-to-end.

Not sure which model fits? Most engagements start with a 30-min scoping call where we figure that out together.

Engineering rates · USD

Real engineers. India-priced.

All-in rates for Custom Engineering engineers — 3 to 15 years of experience. USD quoted; INR / EUR / GBP available on invoice. Pick your tier and engagement model.

How we calculate this
Hourly
The base. You pay for every hour the engineer logs. No minimum — usually billed in 15-min increments.
Monthly retainer
hourly × 160 hrs/mo × 0.90 — the engineer is dedicated full-time for the month. We discount 10% in exchange for the commitment.
Fixed-cost · scope-first
We don’t quote fixed-cost without scope. After a 15-min scoping call, the typical formula is hourly × estimated hrs with a 10–15% scope-creep buffer absorbed by us. Three months of senior dev typically lands in $15k–$35k depending on platform and complexity — we’ll give you a precise number after we understand the project.
3 – 6 yrs

Mid

$ 25 / hour

Full-stack developer who ships features across web, mobile, and APIs.

Best for
  • MVP development
  • Feature iteration
  • Bug fixes + refactor
  • Test coverage
10 – 15 yrs

Lead · Architect

$ 58 / hour

Architect who designs systems, leads teams, and owns the technical strategy.

Best for
  • Technical strategy
  • Architecture audits
  • Complex migrations
  • HIPAA / SOC2 builds

Rates in USD. India-based engineers, 3–15 years experience. Monthly retainer = hourly × 160 hrs × 90% (10% commitment discount). 3-month fixed-cost = hourly × 480 hrs of dev time — we absorb scope creep beyond initial scoping. Excludes taxes; invoiced in INR / USD / EUR / GBP. 6+ month retainers get an additional 10% off.

Still on the fence?

Run the Stack Pressure Test instead.

Answer 12 questions about your project. Get a ranked recommendation across 12 platforms — including Custom Engineering, and the four it’s compared against above. Takes about 60 seconds.

Run the Pressure Test

Common questions

How do we decide if custom is actually the right call?

A scoping call. We start by trying to talk you out of it. If Webflow, Shopify, or WordPress fits, we say so — even though it makes us less money. Custom engineering earns the work when three things are true: (1) no off-the-shelf platform delivers the user experience you need, (2) the project has a 6+ month horizon to amortize the build cost, and (3) someone on your side will own the long-term maintenance.

React Native or Flutter?

The table above gives them similar build-flexibility scores. The honest call: React Native when the team already lives in the JavaScript ecosystem (React on web, Node on backend) — sharing types and tooling pays back hard. Flutter when starting fresh and the team has Dart aptitude — single codebase reaches mobile + web + desktop. Native (Swift / Kotlin) only when you need platform-specific APIs that bindings can’t reach.

What does “compliance-ready” actually mean?

For HIPAA: BAA-signed cloud (AWS, GCP, or Azure), encrypted-at-rest databases, audit logs on every PHI access, role-based access control, and a written security review. For SOC2: similar architecture plus formal policies, vendor management, and a 6–12 month audit window. We architect with compliance from day one — retrofitting it after launch costs 5x and never quite gets clean. We don’t issue the certifications ourselves; we build the system that passes them.

Will we own the code?

Yes. Always. Repo handed over on launch (or earlier if you want CI access during the build). No license fees, no per-seat charges, no “platform lock-in” you’ll discover at year 3. Compare that to no-code (Bubble, FlutterFlow) where you’re renting your own product back from a vendor that can change the rules.

How the work happens

A short, opinionated process. Built around shipping.

Seven phases. Each one independently owned, all connected.

01

Discovery

Week 1

Goals, audience, content, integrations, budget, timeline.

02

Platform rec.

Week 1–2

Honest CMS pick — fits your team, scale, roadmap.

03

Design direction

Week 2–3

Wireframes, system tokens, two visual paths.

04

Build

Week 3–8

Hand-coded blocks, sections, templates. Staging day 3.

05

Optimize

Week 7–8

Lighthouse, Core Web Vitals, accessibility, schema.

06

Launch

Week 8–9

DNS cutover, analytics QA, sitemap submission.

07

Ongoing support

Optional

Retainer for performance, content ops, A/B tests.

From the people who paid for it

What clients across every stack say.

Shopify

Ajay & his team do amazing 👏 work w/ regards to my Shopify store. You can throw any problem at them & they will come up with solutions quickly & at a very affordable cost. I've…

Mike Lin Event Videographer & Social Media Manager
WordPress · custom pricing form

I hired Ajay and the team to develop a pricing form for my website. The form was rather complex, out of the typical scope of many WordPress plugins. The resulting solution exceeded my expectations and included…

Martin Purmensky Founder · Video Direct Mail
WordPress

I have had the pleasure of working closely with Ajay on a recent website development project on Wordpress. Besides being technically excellent at his craft, he has been one of the most reliable and prompt in…

Mo Asgari Co-Founder & President · PokerLab
Web development

I have worked with Ajay and his team on a variety of web development projects and have always found him to be fair, engaged and talented. Nothing ever goes perfectly when it comes to development projects…

Chad Hason Brand Strategist, Author & CEO
Digital experiences for lifestyle & design brands

Ajay and his team are organized and thoughtful in their approach developing digital experiences for businesses and brands. They are efficient and can design for you if you need it or implement your vision exactly as…

Halle von Kessler Marketing & Creative Services Specialist · Your Story. Our Studio.
Website development & ongoing management

Ajay's team has handled website development and ongoing management for me, and I recommend them without hesitation. They're responsive, capable, and the kind of partner you can actually rely on. If you need a team that…

Tim Glennon Fractional Chief Business Officer · Eder Therapeutics
Multi-platform partner

These guys are awesome. They can build anything you like and fast! Very happy with the quality of their work.

Anthony D’Alessandro Business Owner · Lawn Synergy
Multi-platform partner

we've had the pleasure of working with the team and have consistently been impressed by his responsiveness, professionalism, and willingness to go the extra mile. He approaches every challenge with a problem-solving mindset, communicates clearly, and…

Lia Borror Brand Expert · Design & Web Creative · Lia Borror Design & Marketing
2.5 years · Multiple builds

we worked with the team and his team for 2.5 years and they were exceptional. Despite our time difference, The team was always very responsive. I'm not very versed in website development, so The team did…

Lian Ottinger Senior Associate, Content Operations · Former Boldthink Employee
18 months · Multiple builds

My team has worked with the team for about a year and a half. He's incredible with communication, organization, and making sure that web projects stay on track. He's always checking in with me to see…

Theresa Goodwin, MBA Brand & Pricing Strategist · Boldthink Creative
Multi-platform partner

We have been working with the team and his team for about a year now and are very happy with the work they have produced for us. The team and team are very well versed in…

Michael Hannuksela Freelance Account & Project Manager · Whittier
Agency partner · Multi-platform

The team has been wonderful to work with. He keeps projects running smoothly and handles the unexpected with ease. Even with multiple web projects running at once, he keeps his team aligned and on schedule. His…

Erin Mawhorter Art Director · Boldthink
Agency partner · Multi-platform

We have worked with the team on several projects. He's always quick and responsive and has delivered excellent work.

Marcus Blair Founder · More Signal Less Noise
Agency partner · 12+ months

I have been working with the team for the past 12 months and am very impressed on various levels. His knowledge of the industry and the available tools is excellent — he will listen, digest and…

Ben LeFebvre Founder & CEO · Aeolus Digital
Agency partner · Multi-platform

Teaming up with the team continues to be a wonderful and productive partnership. Thoughtful deliberation on how best to address a web redesign. Check. Flexible enough to address an unplanned, urgent client deliverable. Check. A positive…

Gary Duffy President · Duffy Interactive