Idiosys Technologies is a senior-led web development company in Kolkata building fast, secure, and scalable web platforms for startups and enterprises across four continents. From marketing sites to mission-critical SaaS, we ship code that holds up in production.
Production-grade web platforms engineered for real business outcomes — fast page loads, clean architectures, and codebases your team can still ship from two years later.
Applications launched across industries since 2015.
Clients worldwide — most stay long past the first launch.
Four disciplines anchored to the same production standards — from first wireframe to live rollout.
Complex, stateful web apps with auth, billing, multi-tenant data, and integrations. Built on modern frameworks with type safety end to end. Tags: Next.js · Type-safe · Multi-tenant
Admin consoles, customer portals, and analytics dashboards over your internal systems — role-based, audit-logged, and built for daily use. Tags: RBAC · SSO · Audit-ready
Headless-CMS-powered marketing sites with sub-second loads, A/B-ready experiments, and SEO architecture built in. Tags: Headless CMS · Core Web Vitals · SEO
REST and GraphQL APIs, background workers, and integration layers — versioned, documented, and observable from day one. Tags: REST · GraphQL · Observability
A handful of failure modes break what should be a clean production rollout. Each one is preventable.
of web rebuilds ship late, over budget, or with worse performance than what they replaced — most fail on architecture, testing, or scope discipline.
Industry consensus · Forrester, Standish CHAOS
Teams ship features without measuring impact. Pages get heavier release after release until the funnel breaks.
Every project ships with measured budgets for LCP, INP, and CLS. Pass thresholds gate every deploy.
Hand-rolled API contracts drift. Small backend changes silently break the UI in production.
Shared schemas (Zod / OpenAPI / GraphQL) generate types on both sides. Breaking changes fail the build, not the user.
Manual deploys, no preview environments, no rollback. A bad Friday push becomes a weekend war room.
Every PR gets a preview URL, every release is reversible, and every deploy is gated by automated checks.
Errors, slow queries, and broken funnels stay invisible until a customer complains.
Structured logs, distributed traces, and real-user monitoring with alerts on regression before users feel it.
Over-provisioned servers, chatty queries, unbounded jobs. The cloud bill quietly doubles.
Autoscaling, CDN, query caching, and image optimization. Monthly cloud spend audited and forecasted.
XSS, IDOR, leaky logs, no audit trail. Procurement asks one question and the project stalls for months.
OWASP-aligned reviews, dependency scanning, secrets management, audit logging, and deployment options for SOC 2 / GDPR.
A repeatable engineering rhythm — every engagement runs on the same playbook, so you know what each week looks like.
We map user journeys, success metrics, integrations, and constraints. Output: a written scope and a measurable definition of done.
Information architecture, system design, data model, security review, and design system foundations.
A production-ready vertical slice is deployed to staging — real auth, real data, real integrations — and benchmarked against the performance budget.
Test coverage, accessibility, security review, load testing, observability, and release automation.
Staged rollout, A/B testing, conversion optimization, content updates, and ongoing engineering support.
Five operating rules that keep web engagements on-spec, on-time, and on-budget — backed by transparent weekly reporting.
A redacted example of the weekly report every active client receives — same format regardless of engagement size.
Every phase ships with a written scope and a fixed price. Scope changes pause work and trigger a written change order — never a surprise invoice.
We pause at 90% of the cap and check in. You decide whether to continue, descope, or wrap — no $30k overrun emails the week after a sprint closes.
Every Friday you receive a one-page report: hours, spend, what shipped, what is next. Reconciles to the invoice line-by-line.
You pay for engineers who can ship — no padded teams of juniors learning on your budget. Average tenure across our delivery team is 6+ years.
Right-sized infra, autoscaling, model selection, response caching. Your monthly cloud and LLM bills get reviewed every sprint, not at end-of-quarter.
Three production web builds with the architecture and outcomes our clients consented to share. Names redacted on request.
Legacy monolith struggling under multi-tenant load with 6+ second page loads. Rebuilt as a Next.js + Postgres platform with edge caching, tenant isolation, and a typed API layer.
Operational teams sharing files through email and shared drives. Built a role-based document portal with full-text search, audit logging, and SSO.
Slow templated storefront capping conversion. Rebuilt as a headless storefront with ISR, CDN delivery, and a tuned checkout funnel.
Six sectors where we have delivered measurable outcomes — each with its own regulatory shape, data realities, and operational pace.
AI workflow automation, patient systems, and operational intelligence — built for HIPAA-grade workflows.
AI catalog systems, AI support, recommendations, and multilingual content — tuned against real conversion targets.
AI copilots, embedded AI workflows, and intelligent analytics — inside the products your customers already use.
AI reporting, operational dashboards, and workflow automation — for ops teams that move physical or digital goods.
AI content workflows, metadata generation, and search intelligence — for catalogs that live or die by discovery.
Internal AI systems, AI knowledge management, and operational automation — for teams of hundreds, not handfuls.
A modern, battle-tested stack spanning cloud, backend, frontend, and mobile — chosen to ship secure, scalable products faster.
Express,js
AWS
Angular
Azure
Docker
Firebase
GCP
GitHub Actions
Hybrid
IOS
Kubernetes
Laravel
Meteor
MongoDB
MySQL
Next Js
Nginx
Node.js
PHP
PostgreSQL
Python
ReactReact Native
Redis
Supabase
TypeScript
Vercel
Vue
Wordpress
YiiPick the one that matches where you are. Not sure? Talk to us — we'll recommend based on your goals, timeline, and risk appetite.
Stuck projects, unclear ROI, expensive demos. We map your surface area, score readiness, and write a no-fluff plan.
End-to-end: from prototype to production-grade integration. Testing, observability and cost controls wired in from day one.
A senior squad inside your team. Continuous iteration, maintenance, upgrades, and feature delivery.
Send a short brief — what you're trying to ship, where you're stuck, what's worked and what hasn't. We'll come back within one business day with an architecture sketch and an honest read.
