FajarProduct Engineering
From First Idea to a Product Customers Pay For
One team for discovery, design, development and launch, then the sprints that turn a first version into a product people rely on.
Where Does Product Engineering Start?
It starts wherever your product is today. That may be an idea and a spreadsheet, a first version with early users, or a growing product that has become slow and risky to change. The team and the first steps differ, but the goal is the same: a product that earns its keep.
You Have an Idea
We test the idea with a short discovery phase, design a clickable prototype, and build the smallest product that proves people want it.
You Have a First Version
Early users are signing up and the list of requests is growing. We turn the MVP into a complete product with the features, admin tools and polish it needs.
Your Product Is Under Strain
Pages slow down, releases break things and every change takes longer. We find the bottlenecks, fix them and make the codebase safe to grow again.
What Should Go Into an MVP, and What Should Wait?
An MVP should include only what a customer needs to get real value from one core workflow, plus the basics that let you charge and learn from usage. Everything else waits until paying users ask for it. Cutting scope this way is what makes a typical MVP build of 8 to 12 weeks realistic.
In the First Version
- One core workflow, done really well
- Sign-up, login, billing and account settings
- A short onboarding path to the first useful result
- Analytics that show where users drop off
- A basic admin view for support tasks
After Users Ask for It
- Full reporting dashboards
- Native mobile apps next to the web app
- Single sign-on and enterprise permissions
- Multiple languages and currencies
- Integrations nobody has asked for yet
How Does a Product Engagement Run?
Six stages, each with something you can see, test and approve before the next one begins.
Discovery
We talk to you and, where possible, to your users. You get a written scope, a prioritized feature list and the open risks.
Architecture
Data model, hosting, security and integrations are decided early and written down, so growth does not force a rewrite.
Prototype
Clickable designs in Figma for every key screen. You approve the flow before development starts.
Build in Sprints
Two-week sprints, with a demo of working software every two weeks on a staging site, so you judge real software rather than status reports.
Test and Launch
Automated tests, a security review and a staged release, with monitoring and error alerts in place on day one.
Improve After Launch
We watch how people use the product and plan the next sprints around what the numbers show.
- A demo of working software every two weeks
- Written scope for each phase
- Code and IP transfer to you once paid for
Who Is on a Product Team?
A typical product team combines a project lead, a designer and full-stack engineers, with QA and DevOps support added as the product grows. Team size follows the scope: a small MVP may need two or three people, while a product with several apps may need more.
A Project Lead
Runs the sprints, keeps the roadmap current and sends you a written update every week, so you know what is done and what is next.
A Product Designer
Turns the scope into user flows and screens, tests them with real people and keeps the interface consistent as features are added.
Full-Stack Engineers
Experienced developers who own the front end, back end and database, and who can explain their decisions in plain language.
QA and DevOps Support
Test plans, automated checks, deployment pipelines and monitoring, added as the product needs them rather than billed from day one.
How Long Does It Take to Build a Product?
Discovery and a clickable prototype typically take 2 to 4 weeks, and the MVP build typically takes 8 to 12 weeks after that. A complete product typically takes another 3 to 6 months, depending on the number of user types and integrations.
| Phase | Typical Length | What You Receive |
|---|---|---|
| Discovery and Prototype | 2–4 weeks | Written scope, feature priorities, architecture plan and a clickable prototype |
| MVP Build | 8–12 weeks | A live product with the core workflow, accounts, billing and analytics |
| Full Product | 3–6 months | Complete feature set, admin tools, integrations and production hardening |
| Ongoing Development | Monthly | A Dedicated Team shipping improvements in two-week sprints |
What Happens After the Product Launches?
Launch is where learning starts. We track how people use the product, fix the places where they get stuck, and plan each sprint around evidence rather than guesses. When usage grows, we strengthen the infrastructure, or help your own engineers take over.
Measure
Sign-ups, activation and retention are tracked from launch. We review the numbers with you and point out where users get stuck.
Improve
Each sprint is planned around evidence: fixing drop-off points first, then adding the features that paying users actually request.
Scale or Hand Over
As usage grows we harden performance and infrastructure. If you build an in-house team, we document everything and help them take over.
Technologies Behind Our Products
Proven, widely used tools, so any good engineer can work on your product later.
- Next.js
- React
- TypeScript
- Node.js
- Python
- FastAPI
- Flutter
- Figma
- Stripe
- PostgreSQL
- Supabase
- Redis
- Prisma
- Docker
- GitHub Actions
- Vercel
- Google Cloud
- AWS
- Sentry
- Mixpanel
How Much Does Product Development Cost?
Fixed-Price Projects typically start from $3,000 for a small, clearly defined piece of work. MVPs with several user roles, payments and integrations cost more, and each phase begins with a written proposal, sent within 48 hours of the scoping call. For ongoing development, Individual Developers typically start from $1,500 per month per developer.
The main cost drivers are the number of user types, the integrations the first version needs, and whether mobile apps are part of it. Starting with a short discovery phase keeps the estimate honest. If you are a founder raising your first round, see how we build MVPs for startups.
Frequently Asked Questions
What Is Product Engineering?
Product engineering is building a software product end to end: deciding what to build, designing it, developing it, launching it and improving it based on how people use it. Instead of hiring separate designers, developers and a project lead, you work with one team that owns the whole result.
Can You Take Over a Product Another Team Started?
Yes. We begin with a code and architecture review, explain what is sound and what is risky, and propose a plan. Many products do not need a rewrite. They need the fragile parts fixed and tests added, so new features stop breaking old ones.
Who Owns the Code and the Product?
You have access to the repository from the first commit. Full ownership of the code and all intellectual property transfers to you once it is paid for. If you later hire your own engineers, we document the system and help them take over.
Do You Sign an NDA?
Yes. We sign an NDA on request, before you share anything confidential.
Related Services
Bring the Idea and We’ll Help You Shape the Product
Tell us what you want to build and where you are today. You get an honest view of the first version, a rough timeline and a cost range.