Technical Lead · 13+ Years Experience · Freelance Ready

Engineering robust
enterprise systems
across Node/TypeScript & Java.

I'm Debanshu Saha — Technology Lead / Lead Software Engineer currently associated with TwoPiRadian Infotech and an independent software engineering and solution architect and consultant. I build and scale distributed platforms across Node.js / TypeScript, Java / Spring Boot, and AWS Cloud.

Passionate about AI-assisted development for rapid velocity, combined with deep architectural discipline and meticulous human verification of every line of code.

View selected work Hire for freelance / consulting
Debanshu Saha

About

Technical Lead, Manager, and Senior Software Engineer with 13+ years of experience building enterprise applications and distributed systems from scratch. I partner closely with clients and product teams across the UK, US, Canada, and Europe — translating intricate business requirements into scalable, resilient technical solutions.

My core strength is bilingual full-stack engineering: deep architectural fluency in both the modern JavaScript / TypeScript ecosystem (Node.js, Express, React, Serverless Framework) and the battle-tested Java ecosystem (Spring Boot, Hibernate, distributed data pipelines).

Beyond full-time leadership, I actively take on high-impact freelance projects and consulting engagements — helping startups and enterprises design architectures, ship MVPs, modernize legacy systems, or optimize cloud infrastructures.

How I Build

AI-Accelerated Velocity with Rigorous Human Verification: I heavily integrate state-of-the-art AI coding tools (Antigravity, Cursor, Copilot) into my daily development workflow. This unlocks 3–5x faster turnaround for prototypes, boilerplates, and feature implementations.

However, speed is never traded for quality. Every single line of code, data flow, API contract, and edge case undergoes strict human inspection, comprehensive testing, and architectural validation. The result: rapid time-to-market without compromising reliability, security, or maintainability.

End-to-End Leadership: From technical business analysis (BRD/FRD alignment, user stories, estimation) and Scrum Master ceremonies to hands-on architecture, code reviews, and AWS cloud deployment.

Toolkit

JS / TS Stack (Frontend & Backend)
TypeScript JavaScript Node.js Express.js React.js Serverless Framework TypeORM DrizzleORM HTML5 / CSS3 Jest Mocha Chai
Java Stack & Data Engineering
Java Spring Boot Hibernate Scala Maven Gradle JUnit Struts & JDBC Data Connectors
Messaging & Event Streaming
Apache Kafka RabbitMQ AWS SNS / SQS Event-Driven Architecture
AWS Cloud & Infrastructure
AWS Lambda API Gateway Cognito S3 RDS (MySQL) DynamoDB CloudFront ECS / EKS ElastiCache (Redis) GitHub Actions (CI/CD)
Databases & Caching
Redis MySQL DynamoDB MongoDB
AI Coding & Engineering Tools
Antigravity Cursor GitHub Copilot AI-Assisted Pair Programming Automated Testing & Verification
Third-Party & Enterprise Integrations
Salesforce REST API Litmos LMS Airtable API Data Connectors
Methodology & Leadership
Agile & Scrum Technical Business Analysis Sprint Planning & Grooming Architecture & Code Review Team Mentorship

Selected work & experience

2013 → Present

  1. 01

    Apr 2021 — Present

    Real Estate IoT & Connectivity Certification

    Technology Lead & Technical Business Analyst

    A global certification workflow platform for the real estate industry evaluating Internet Connectivity and IoT smartness. Architected and developed the serverless backend from scratch using TypeScript, React.js, Express.js, Serverless Framework, Java, Spring Boot, and AWS (API Gateway, Lambda, Cognito, RDS, CloudFront). Engineered REST API integrations with Salesforce, Litmos, and Airtable. Led and mentored a team of 5 developers across solution design, sprint planning, code reviews, and production releases.

  2. 02

    Apr 2021 — Present

    Maritime Port Call & Waste Management PWA

    Technology Lead & Scrum Master

    NMap is a real-time maritime port call management platform between vessels, agents, and port authorities. NSwap is a progressive web app for maritime waste declaration and disposal receipt management. Led a team of 4 developers across design to production with TypeScript, React.js, Node.js, Express.js, Jest, and AWS (SNS, SQS), while facilitating all Agile ceremonies as Scrum Master.

  3. 03

    Apr 2017 — Mar 2021

    Enterprise BI & AI/ML Data Connectors

    Senior Software Engineer

    An enterprise data preparation platform for BI and AI/ML workloads. Designed and developed high-throughput bidirectional data connectors in Java and Scala across object storage, relational, and NoSQL databases—including AWS S3, DynamoDB, Redshift, Google Cloud Storage, Google Drive, Snowflake, and MongoDB with rigorous JUnit testing.

  4. 04

    Nov 2014 — Mar 2017

    Aircraft Turbine Prognostic Life Assessment

    Full Stack Developer

    A prognostic life assessment platform for aircraft turbine engines. Developed backend with Java, Spring Boot, Hibernate, Apache Derby, and JUnit; frontend in HTML, CSS, jQuery, and Bootstrap. Gained onsite experience in Ottawa, Canada, managing client requirements gathering, Balsamiq wireframing, testing, and technical support.

  5. 05

    Aug 2013 — Nov 2014

    Enterprise Loan Acquisition Platform

    Software Engineer Trainee

    Customer acquisition platform for enterprise loan processing. Development, JDBC database integrations, and production support using Java, Struts, JDBC, HTML, CSS, and JavaScript.

Credentials

Let's collaborate

I am actively available for freelance projects, technical consulting, and advisory roles. Whether you need an MVP built with speed and precision, a custom serverless architecture on AWS, or high-performance Node.js/Typescript and Java systems, let's talk.

Reach me directly at debanshu.saha@gmail.com or connect via:

LinkedIn GitHub ✉ Email me Say hello on WhatsApp