APIs & service layers
Documented REST or RPC APIs with explicit validation, authentication, rate limits and error contracts that frontend and partner teams can build against.
The system behindthe screen.
Reliable products are decided in the backend: validation, permissions, data integrity and failure handling. We build Node.js and TypeScript services, APIs and data layers that behave predictably under real use.
Plan your projectFrom your workflow to a working system
- 1Data & rules
- 2Services & APIs
- 3Operations
The right scope.
Built around your needs.
Start with the problem that matters. Combine the capabilities your project needs, with boundaries agreed before the build.
Databases & data modelling
Schema design, migrations and query work around the real shape of your data — including the history and audit trails your operations need.
Integrations & background jobs
Connections to third-party services, queues and scheduled work with retries and idempotency, so temporary failures do not corrupt records.
Auth, permissions & audit
Identity, roles and permission checks enforced at the service layer — not just hidden in the interface — with the records to review what happened.
Contracts at every boundary.
A reference backend structure. Validation, permissions and failure handling live in the service layer, where they cannot be bypassed.
Interface: its responsibility
Define the documented requests the service accepts, with identity and input checks applied before any rule runs.
What to review
Check malformed input, expired sessions, rate limits and that error responses are consistent and documented.
Illustrative planning model. Your architecture and deliverables are agreed during scoping.
See where
it could take you.
Illustrative applications to help shape your brief. These are possible project scopes, not customer case studies.
The starting point
A product needs a public API that partners can integrate without endangering the platform.
The approach
Define the contract first — endpoints, limits, versioning and error behaviour — then build with validation and monitoring from the first release.
What the work can produce
A documented, versioned API with keys, limits and operational dashboards.
Start where
your project is.
The first step depends on what is already known. These starting points help define an engagement; scope, price and timing are agreed separately.
Explore an uncertain idea
The problem is clear, but the approach is not.
- 1Question
- 2Prototype
- 3Decision
What you take forward
A bounded experiment, findings and a recommendation on what to validate next.
A prototype is not a production-ready service.
Deliver a defined scope
You know the workflow and can agree acceptance checks.
- 1Scope
- 2Build & review
- 3Handover
What you take forward
Agreed deliverables, verification evidence and operating instructions for the scoped release.
Changes to scope need an explicit decision on cost and timing.
Improve an existing system
A live system needs focused changes or ongoing care.
- 1Review
- 2Prioritize
- 3Release & observe
What you take forward
A prioritized backlog, reviewed changes and an agreed maintenance or support boundary.
Coverage, response targets and access are agreed per engagement.
A clear path.
Through the work.
Scope and deliverables are agreed for each project. These stages guide the conversation.
- 1
Model the domain
Agree entities, ownership, validation rules and what the system must never lose before choosing infrastructure.
- 2
Build with contracts
Develop services against documented contracts with automated checks for the rules that matter.
- 3
Operate deliberately
Agree deployment, backups, monitoring and who responds when something fails — before launch, not after.
Validation and permissions at the service edge
Technology is a scoping decision. These are relevant tools and building blocks to discuss against your existing systems, operating constraints and maintenance needs.
Services
Node.jsTypeScriptAPI framework
Define contracts, validation and error behaviour in typed code that frontend and partners can rely on.
Data
SQL databasesMigrationsAudit fields
Model entities, history and retention around real usage, with migrations that can be rehearsed and rolled back.
Runtime
DockerLinuxMonitoring
Package and run services with explicit resource limits, health checks and logs routed to an owner.
The ecosystem.
Behind the experience.
Interfaces, application logic, data and operations. The building blocks work together around your project.
Frontend Development
- React
- Angular
- JavaScript
- HTML5
- CSS3
Backend Development
- Node.js
- Express.js
- Laravel
- PHP
Database
- MySQL
- PostgreSQL
- MongoDB
- Firebase
Cloud & DevOps
- Azure
- AWS
- Google Cloud
- Docker
- Jenkins
What should be checked
before handover.
Turn quality expectations into reviewable evidence. The exact checks and responsibilities belong in the project scope.
Contract tests
Verify documented request and response behaviour, including malformed input and authorization failures.
Failure rehearsals
Test provider outages, duplicate jobs and interrupted deployments against the agreed retry and rollback rules.
Operable handover
Confirm deployment, backup, restore and log access are documented and usable by the owning team.
Before
we begin.
Practical answers to help turn your idea into a scope everyone understands.
Which databases and runtimes do you work with?
Jainil's experience centres on Node.js, TypeScript, SQL databases, Docker and Linux. The database and runtime for a project follow its data shape, consistency needs and the team that will maintain it.
Can you integrate with our legacy system?
Usually, yes — through its API, database, file exports or a staged migration. The honest answer comes from a short review of what the system actually exposes and who owns each field.
Who owns the code and infrastructure?
You do. Deployment access, secrets, backups and documentation are handed over as part of the work, so the system is never held hostage.
Often better together.
Before you scope the project.
Still have questions?
Start with the brief.
Bring the problem you want solved. We’ll shape it into a project brief you can keep — or let AI draft a first approach.