Product builds
A SaaS or web application built end to end in Next.js, Node.js and PostgreSQL, from the first plan to a live deployment.
SaaS & web app developmentFreelance · Remote · Bengaluru, India
A freelance full-stack developer for your SaaS or web app.
I'm Abinithish Kumar, a software engineer in Bengaluru with 3+ years building production systems. Alongside my full-time role I take on a small number of freelance projects, and I own each one end to end: the plan, the code, the deployment and the handover.
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Redis
- Apache Kafka
- AWS
- Docker
- n8n
01 — The problem
Why hire one full-stack developer.
Early products rarely fail for lack of engineers. They fail because the frontend, the API, the database and the deployment were each decided by someone different, and nobody owned how they fit together.
I work across the whole stack, so one person is accountable for the system working: the screens your users see, the API and data model behind them, and the AWS infrastructure they run on. You get a written plan before any code, working software every week, and a product your own team can run after I leave.
02 — Services
What I can build for you.
Backend & APIs
APIs, data models and event-driven services, or a performance review of the backend you already have.
Node.js backend & performanceDeployment & DevOps
Your application on AWS with CI/CD, Docker, monitoring and a rollback path, so releases stop being risky.
AWS deployment & DevOpsAI & automation
A manual, document-heavy workflow automated with an LLM and n8n, with guardrails and cost controls.
AI & workflow automation03 — Process
How a project runs.
One point of contact, from planning to a deployed product your team owns.
01
Discovery call
A short call about the problem, your constraints and what done looks like. You leave knowing whether I'm the right fit.
02
Plan & proposal
A written plan covering scope, architecture, milestones and a timeline. Nothing starts until we both agree on it.
03
Weekly increments
Working software every week, with a demo and a short written update. No long silences.
04
Deploy & handover
Deployed to production, with the code in your repository, tests and CI/CD, a runbook, and a walkthrough with your team.
04 — Proof
Work that shows it.
Products I've designed, built and run myself. Each has a full case study.
Theliv — AWS cost-monitoring SaaS
My own product, built end to end as its sole engineer: nightly multi-account cost ingestion, spike detection, Claude-written explanations, Slack alerts and Stripe billing.
Read the case studyDryDock Kit — multi-tenant SaaS starter
My Next.js foundation for B2B SaaS: organizations, roles, four billing providers and an admin console, with 244 security tests that ship in the download.
Read the case study05 — Who it's for
A good fit if you are…
Founders with a validated idea who need a first version in production.
Startups whose product has slowed down, or is about to scale.
Teams that need a senior engineer for one well-defined project.
Agencies that need a full-stack engineer for a client build.
06 — FAQ
Before you get in touch.
What kinds of projects do you take on?
SaaS and web applications built end to end, from planning to deployment. I also take on backend-only work, AWS deployment and DevOps, and LLM workflow automation. A typical engagement runs 4–8 weeks.
Where are you based, and how do time zones work?
Bengaluru, India (IST, UTC+5:30). Day to day I work with written updates, plus a weekly demo call at a time that suits you.
What happens after I get in touch?
I reply within 24 hours with questions or a time for a short call. If it's a fit, you get a written plan covering scope, milestones and a quote before any work starts.
Who owns the code?
You do. It lives in your repository, and the handover includes tests, CI/CD, a runbook and a walkthrough with your team.
08 — Contact
Let's Build Something.
I take on a small number of projects at a time, from full product builds to deployment, performance and automation work: scoped, shipped, and handed over clean.
Bengaluru, India → Open to RelocationReplies under 24h