S

HomeAboutBlogs

About

Sudhakar Behera

Senior Full Stack Engineer

Building scalable SaaS, AI, and cloud applications from idea to production. Founder with 7+ years taking products across frontend, backend, infrastructure, and cloud — focused on maintainable systems and pragmatic engineering decisions.

Career impact

Outcomes that matter more than job titles.

  • Founded and led Replika Tech, delivering end-to-end SaaS products
  • Delivered 120+ production software projects across SaaS, enterprise, and mobile
  • Built systems supporting 100,000+ daily users
  • Developed AI-powered production applications using RAG, LangGraph, and MCP

Experience

From agency work to founding a consultancy.

Founder & Lead Engineer · Replika Tech

Jun 2023 – Present

Software engineering consultancy delivering SaaS, AI, and internal business systems.

Next.js · React Native · Node.js · PostgreSQL · AWS · Railway · Firebase · Strapi · Mux

  • Founded Replika Tech, building SaaS products, internal business systems, and AI applications for startups and SMBs.
  • Delivered products from greenfield MVPs to production across logistics, education, automotive, and AI.
  • Owned product architecture, engineering, infrastructure, deployment, and customer delivery.
  • Mentored engineers and established workflows that improved delivery consistency.

Senior Full Stack Engineer · Mako IT Lab

Sep 2021 – Apr 2026

Product engineering consultancy delivering mobility and enterprise platforms.

React · React Native · Next.js · Node.js · MongoDB · Stripe · TanStack · Fastlane · Bitrise

  • Led modernization of the Electric Miles platform, simplifying architecture across mobile and web.
  • Designed multi-tenant SaaS platforms and internal ELT systems for production-scale data workflows.
  • Standardized deployment through CI/CD automation and cross-platform build pipelines.
  • Partnered with product and engineering to balance speed, maintainability, and trade-offs.

Full Stack Developer · isys Technologies

Feb 2021 – Oct 2021

Enterprise software company focused on CRM and internal business systems.

React · Next.js · Node.js · MongoDB · Ant Design · WordPress API

  • Delivered CRM and enterprise systems focused on performance, usability, and maintainability.
  • Optimized API and database performance through query improvements.
  • Implemented real-time communication features for day-to-day operations.

Full Stack Developer · Freelance

Jan 2020 – Jan 2021

Independent product engineering across social platforms and EdTech.

React · Node.js · Sails.js · MongoDB · AWS (EC2, S3, CloudFront) · MySQL

  • Delivered web applications including a social subscription platform and examination portal supporting 100,000+ daily users.
  • Designed AWS infrastructure that improved deployment reliability at scale.

Developer / Project Coordinator · Tenfinish

Nov 2018 – Dec 2020

Agency delivering eCommerce and custom business applications.

PHP · Laravel · OpenCart · MySQL · React · LAMP

  • Delivered 50+ web, eCommerce, and business applications across industries.
  • Led estimations, client communication, sprint planning, and delivery.
  • Modernized legacy PHP apps with React-based practices.

Featured projects

A few production systems worth calling out.

AI Document Platform

AI-powered SaaS for generating quotations, invoices, and contracts.

Reduced manual document creation using structured LLM workflows, RAG pipelines, and multi-template architecture.

Next.js · Node.js · PostgreSQL · AI SDK · RAG

Multi-tenant SaaS & ELT Platform

Multi-tenant SaaS applications and internal ELT systems for production data workflows.

Enabled shared production platforms and simplified data processing for engineering teams.

Next.js · Node.js · MongoDB · CI/CD

Exam Platform

Assessment platform for online examinations, question banks, and analytics.

Supported 100,000+ daily users with cloud-native infrastructure for exams and reporting.

React · Node.js · MongoDB · AWS

Stack

Tools I reach for when shipping SaaS, AI, and internal systems.

Core

  • React
  • Next.js
  • TypeScript
  • Node.js
  • PostgreSQL
  • AWS
  • React Native
  • Expo

Backend & Cloud

  • MongoDB
  • MySQL
  • Express
  • Fastify
  • Docker
  • Vercel
  • Cloudflare
  • Railway
  • Firebase

AI & Tools

  • LangChain
  • MCP
  • TanStack
  • Tailwind CSS
  • Stripe
  • Strapi
  • Fastlane
  • Bitrise
  • Figma
  • Bitbucket

Expertise

Where I spend most of my engineering time.

Architecture
System Design · API Design · Performance · CI/CD · Technical Leadership · Scalability
Frontend
React · Next.js · React Native · Expo · TypeScript · TanStack · Tailwind CSS
AI
LangChain · LangGraph · RAG · AI SDK · MCP
Backend
Node.js · Express · Fastify · PostgreSQL · MongoDB · MySQL · REST · tRPC · WebSockets
Cloud
AWS (EC2, IAM, S3, CloudFront) · Docker · Railway · Vercel · Cloudflare

Education

B.Sc. Computer Science — Hindustan College of Arts and Science

2015 – 2018