Behind every smooth app is a backend that rarely gets noticed — until it fails. Mavinz provides API development and backend engineering that is fast, well-documented and secure, so your web apps, mobile apps, partners and internal systems can exchange data with confidence.
We design REST and GraphQL APIs, build event-driven and microservice architectures where they genuinely help, and connect you to payment gateways, identity providers, logistics partners, government portals and other third-party services.
Why backend quality matters
Poorly designed APIs create brittle integrations, security gaps and slow releases. Good backend engineering makes every future feature cheaper to build.
Clear, versioned APIs with OpenAPI documentation
Strong authentication and authorisation
Performance that holds up under real load
Easier, safer partner and app integrations
Backend capabilities
We cover the full backend lifecycle, from data modelling to production monitoring.
API design & development
REST and GraphQL APIs with consistent standards, versioning, rate limiting and documentation.
Microservices & architecture
Service boundaries, messaging, caching and databases designed around your scale and team size.
Auth & third-party connectivity
OAuth 2.0, OpenID Connect, SSO, payment, SMS, email and partner integrations done securely.
Typical backend deliverables include:
- Architecture and data model documentation
- OpenAPI/Swagger specifications
- Automated tests and load-test results
- Security review against the OWASP API Top 10
How we deliver API and backend projects
- 01
Discover
A short workshop to understand the problem, the people affected and what success looks like in numbers.
- 02
Design
Architecture, user flows and a delivery plan with clear milestones, costs and risks written down.
- 03
Build & test
Two-week sprints with working demos, code reviews, automated tests and security checks built in.
- 04
Launch & support
Deployment, handover documentation, training and an agreed support window after go-live.
Serving clients in India and worldwide
We engineer backends for companies in India, the United States, the UK and Europe, the GCC and Australia — including integrations with region-specific services such as UPI and Indian payment gateways, Stripe, open-banking APIs and local e-invoicing or tax platforms.
“We've been using their services across multiple portfolios; and each time the level of commitment & the quality of delivery takes the bar higher. The application developement team is superb. They went deep into our business first, before even touching a line of code. The teams from Mavinz have always worked like an integral part of our in-house teams; and we never felt like working with an external partner. Keep it up!”
API & Backend Engineering FAQs
It depends on your team size, release frequency and scaling needs. Many businesses are better served by a well-structured modular monolith first. We explain the trade-offs and recommend what fits now, with a path to evolve later.
We use proven standards such as OAuth 2.0 and OpenID Connect, least-privilege scopes, input validation, rate limiting, encryption in transit, secret management and logging, and test against the OWASP API Security Top 10.
Yes. We can reverse-engineer and document existing endpoints, add OpenAPI specifications and introduce versioning without breaking current consumers.
We build integrations with publicly available APIs and sandbox environments provided by banks, payment providers and government platforms, subject to their onboarding and approval processes.
