HEERAT

SINGH

Java & AWS Engineer | Helping startups build scalable backend systems & AI automation | Ontario, Canada

About Me

Java & AWS Engineer helping startups build scalable backend systems and AI‑powered automation.

4+ years building production-grade microservices — from Deutsche Telekom in Europe to logistics platforms in Toronto. Based in Ontario, Canada · Canadian PR · Available for contracts & full-time roles.

BACKEND DEVELOPER

Building high-throughput Java microservices and REST APIs that handle enterprise-scale load — from Deutsche Telekom telecom products to Toronto logistics platforms.

CLOUD ARCHITECT

AWS-certified cloud infrastructure design and cost optimization. EKS, Lambda, API Gateway, and more — built for reliability and scale.

FULL STACK DEVELOPER

End-to-end product delivery when needed — React frontend, Java backend, AWS deployment. Full ownership from design to production.

AI ENGINEER

Generative AI and multi-agent systems integrated into backend architecture using LLM APIs and agentic workflows — production-ready, not just a buzzword.

Built with passion

Portfolio

Work & Projects

Production systems built for scale — from enterprise telecom to Toronto startups.

Spring

Logistics Platform — AWS EKS

Kubernetes-based courier logistics platform — Java Spring Boot microservices, JWT authentication, NMFTA Freight Class Calculator, deployed on AWS EKS with Jenkins CI/CD and 85%+ test coverage.

Spring

Enterprise Telecom Microservices

8+ production microservices for Deutsche Telekom's core products — built with Quarkus, compliant with TMF OpenAPI standards, deployed across test, integration, and production environments.

Spring

Food Delivery Platform

Microservices-based food delivery app — Angular frontend, Spring Boot backend, deployed on AWS EKS with Docker and Kubernetes for scalable container orchestration.

Speech to Text App

AI-powered speech recognition app built with React and Python, integrating Sarvam AI/ML models for accurate real-time transcription.

Built with passion

What I Offer

Services & Pricing

🍁 CAD

Transparent pricing for startups and growing businesses across Canada. No hidden fees — just results.

Hourly Rates

☕

Backend Development

Java & Spring Boot

$75/hr

Microservices & REST API design
Spring Boot, Quarkus, Spring Security
Performance tuning & code review
CI/CD setup with Jenkins / GitHub Actions

☁️

AWS · Azure · GCP

Cloud Consulting

$80/hr

Infrastructure design & architecture
EKS, ECS, Lambda, API Gateway
Cost optimisation & security review
Migration from on-prem to cloud

AI Automation

$85/hr

LLM & Generative AI integration
Multi-agent workflow automation
RAG pipelines & vector databases
AI features into existing backends

Fixed Packages & Retainer

Best Value

🚀

Full Stack Automation Package

$6,000 – $9,000fixed

End-to-end delivery — Java backend, AWS cloud infrastructure, and AI automation in a single engagement.

Java microservices + REST API
AWS deployment (EKS / ECS)
AI/LLM feature integration
Documentation & handover

🔄

Monthly Retainer

$2,000 – $4,000/mo

Dedicated ongoing development and technical support on a fixed monthly basis — no surprises.

Agreed scope each month
Priority response & async support
Code reviews & architecture advice
Flexible ramp up or down

Canadian PR · No sponsorship requiredBased in Ontario, CanadaDeutsche Telekom · Toronto clientsContracts · Full-time · Retainer

Book a Free Consultation

Built with passion

Background

Skills & Experience

4+ years building production-grade systems across Telecom, Banking, Logistics & AI — from Deutsche Telekom and Citibank to Toronto startups.

Tech Stack

Work History

2026

Founder & Consultant

Heerat Singh Consulting

Current

Java backend, AWS cloud architecture, and AI automation services for startups and growing businesses across Canada.

2024-26

Software Engineer - II

Deutsche Telekom

Built 8+ production microservices for enterprise telecom products (Giga-ta, DMP) using Quarkus and TMF OpenAPI standards. On-site in Germany and Poland.

2022-23

Java Developer

InnoAgile

Kubernetes-based logistics platform on AWS EKS. Spring Boot microservices, JWT auth, Jenkins CI/CD, 85%+ test coverage.

2019-21

Associate Software Engineer

Virtusa

Associate Software Engineer delivering Java backend solutions for Citibank — one of the world's largest financial institutions. Built REST APIs and enterprise banking features using Spring, with a focus on reliability and compliance.

Built with passion

Life Outside Work

Beyond Code

A glimpse into the discipline and passion that fuels the work.

01 / 04

Barbell Squats

This is my favourite exercise. 120kgs - 2 sets x 4 reps.

Built with passion

What People Say

Client Testimonials

Feedback from colleagues and clients I've had the pleasure of working with.

“

Marius Koban

FTTH Technical Product Manager @ Deutsche Telekom

"It has been a pleasure working with Heerat as part of our team at Deutsche Telekom. He played a key role in building and maintaining high-load web applications based on Angular and Quarkus, with a strong focus on backend development. Heerat consistently demonstrated a proactive mindset — whenever issues appeared, he collaborated closely with troubleshooting teams to identify and resolve bugs quickly, always with a positive and helpful attitude. What stood out most was his ability to connect technical implementation with the underlying business goals, ensuring his work was always aligned with product needs and the roadmap. A true team player who contributes not only through his technical skills but also through his willingness to help others succeed."

Companies I've Worked With

Built with passion

Get In Touch

Let's Work Together

Have a project in mind or looking for a senior Java & AWS engineer? Let's connect and make it happen.

Ontario, CanadaCanadian PRNo sponsorship requiredContracts · Full-time · Retainer

info@heeratsingh.com

Phone

+1 (437) 989-4497

linkedin.com/in/heeratsingh

Built with passion