AI development
LLM-powered features, autonomous agents, RAG pipelines, and workflow automation — shipped with evals, guardrails, and sane cost control.
Build with AI AI-native · Since 2019 · Noida, India
We turn ideas into AI-native software.
Letstream is a consultancy and engineering studio for teams who want to move faster with AI. We design, build, and operate web apps, mobile apps, and AI features — from first prototype to production at scale.
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Years in business
What we do
A full stack of services — built around AI as default.
Whether you need a marketing site, a mobile app, an AI agent, or a rearchitected platform, we bring the same practice: senior engineers, short feedback loops, and AI baked into every step of how we design, build, and deliver.
Web development
Fast, accessible websites and web apps. Marketing sites, SaaS products, e-commerce, and bespoke portals — engineered for Lighthouse scores.
Explore webFull-stack engineering
APIs, dashboards, internal tools, SaaS products. TypeScript, Python, Go — whatever the job needs, built to scale and easy to maintain.
Scope a buildMobile app development
iOS and Android apps, native or cross-platform (React Native, Flutter). Prototype to App Store to growth-ready in one loop.
Ship an appCloud & DevOps
Hosting, containers, CI/CD, observability, SSL, domain and email setup. The ops plumbing your team shouldn't have to own.
See plansAI consulting
Strategy workshops, evaluation harnesses, rollout plans, and team enablement. We help you place the right AI bets — and measure them.
Book a workshopDesign & UX
UI/UX, MVP prototyping, product design, and brand guides. Interfaces users feel — backed by design systems your engineers will actually use.
Design with usAutomation & RPA
Business process automation, RPA, and workflow pipelines. No-code where it's cheap, code where it scales — with measurable hours saved.
Audit a workflowZoho Suite
Authorized Zoho Partner. Setup, customization, integrations, and ongoing support for the full Zoho product line.
Get Zoho doneStaff augmentation
Senior engineers embedded into your team and CTO-as-a-Service for strategic calls. Borrow the bench — skip the hiring cycle.
Hire on demandIT staffing & outsourcing
Dedicated engineers, project-based pods, or fully managed services — from one hire to a full India delivery centre, set up and run for you.
Talk to usHow we work
Small senior team. Short feedback loops.
We work in weekly cycles, not quarterly committees. You'll talk to the people building your product, not an account manager.
STEP 01
Discover
We learn your users, constraints, and economics. Output: a sharp scope document and a go/no-go on AI leverage.
STEP 02
Design
Interactive prototypes in days, not weeks. We decide on stack, models, and architecture with evidence.
STEP 03
Build
Weekly releases, live demo environment, real user testing. AI helps us ship faster — never replaces craft.
STEP 04
Operate
We monitor, iterate, and grow with you. Flat monthly retainers for hosting, updates, and on-call support.
Selected work
Products we've shipped with our clients.
Developer tools · PWA · Open source
dev-utils.org — a PWA of developer utilities, free and open.
JSON formatting, regex testing, color conversion, and more — installable as a Progressive Web App. Our in-house product, shipped with the same process we use for client work.
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Digital health · Platform
Willis — a digital health platform, end-to-end.
Patient engagement, practitioner tooling, and the APIs connecting them — a long-running build with an ongoing retainer. Shipped with FHIR discipline and clinical-workflow empathy.
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Automation · Social media · SaaS
Vacarino — Facebook business automation at scale.
Scheduled posts, threaded comments, channel and group targeting — running on a carefully tuned queue-and-worker backbone that holds up when volume goes sideways.
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