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SP INFOTECH

Our expertise

Web Development Expertise

Our web engineering practice covers everything from a fast marketing site to a multi-tenant SaaS platform. What stays constant is the standard: fast on a mid-range phone, secure by default, accessible, and structured so search engines can read it.

Developer building a web application on a laptop
Discipline
Web Development
Delivered from
Kolkata, West Bengal
Since
2010

Performance is an architecture decision

Performance cannot be added at the end. We choose rendering strategy per route — static generation for content that rarely changes, server rendering for personalised pages, client rendering only where interactivity demands it — so the browser receives the minimum work necessary.

Add automatic image optimisation, font pre-loading, code splitting and edge caching, and the result is sites that load fast on the connections your customers actually have.

Security handled as routine practice

We follow OWASP guidance as standard: parameterised queries, output encoding, CSRF protection, strict Content Security Policy, secure session handling, rate limiting on authentication endpoints, dependency scanning and enforced HTTPS with HSTS.

Role-based access control is designed at schema level rather than hidden in the interface, because hiding a button is not authorisation.

Accessible, because it is also better business

We build to WCAG 2.1 AA: semantic markup, keyboard navigability, visible focus states, sufficient contrast, labelled forms and meaningful alt text.

Beyond being the right thing to do, accessible markup is precisely the structure search engines parse most reliably — the two goals reinforce each other.

What this covers

  • Next.js, React and TypeScript front ends
  • Node.js, Laravel and Python back ends
  • REST and GraphQL API design
  • PostgreSQL and MySQL database engineering
  • WCAG 2.1 AA accessibility compliance
  • CI/CD pipelines and automated testing

FAQs

Web Development — common questions

What clients usually want to understand before committing.

Primarily Next.js and React with TypeScript on the front end, and Node.js, Laravel or Python on the back end, over PostgreSQL or MySQL. We select per project rather than forcing every client onto one stack.

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Office
RN 506, Siddha Esplanade, 6 Jawaharlal Nehru Road, Kolkata, West Bengal 700013, India
Hours
Monday – Saturday, 10:00 AM – 7:00 PM IST

Our Clients

We work with the companies that have established a stainless reputation in what they do. They are leaders in various spheres of business, and we appreciate cooperating with them.

International Institute of Hotel Management logo
CenturyPly logo
Geological Survey of India logo
Indian Defence emblem
TVS logo
Client logo
Client logo
Simoco Telecommunications (South Asia) Limited logo
CEVA logistics logo
Anand Shreeji logo
aquatica india logo