Jashanveer Singh.Contact
Jashanveer Singh

I AM
JASHANVEER

JAVA BACKEND /
FULL-STACK ENGINEER

Available for new opportunities

Java backend and full-stack engineer building with Spring Boot, REST APIs, PostgreSQL, and React. Currently @ onAir Tech.

Selected Work

Recent Projects

Earth Lens screenshot
● Live

Earth Lens

Earth, on your desktop.

A privacy-first macOS menu-bar wallpaper app with scheduled rotation, local caching, login-item integration, and multi-display support.

  • Scheduled wallpaper rotation with local caching
  • Login-item integration for a native menu-bar workflow
  • Multi-display support built with SwiftUI and AppKit
  • Swift
  • SwiftUI
  • AppKit
  • SMAppService
  • macOS
● Beta testing

Rung

A habit platform backed by Java.

A habit and mentoring platform with a Java 17 Spring Boot backend for authentication, progress, subscriptions, data portability, and real-time synchronization.

  • 27 REST controllers secured with JWT authentication
  • PostgreSQL and Flyway migrations with Redis and SSE sync
  • Apple Sign-In, App Attest, encrypted PII, and rate limiting
  • Testcontainers, JaCoCo gates, and Trivy CI scanning
  • Java 17
  • Spring Boot
  • PostgreSQL
  • Redis
  • SSE
What I do

I Can Build

01

Java Backend

Spring Boot services with Spring Security, JPA/Hibernate, REST and SOAP integrations, and production-minded error handling.

  • · Java
  • · Spring Boot
  • · Spring Security
02

Data & Realtime

Relational data design and performance work across PostgreSQL, Oracle, MySQL, Redis, Flyway, and server-sent events.

  • · PostgreSQL
  • · Oracle
  • · Redis
03

Full Stack

React and JavaScript features, Angular modules, and WordPress-backed workflows that connect resilient services to useful interfaces.

  • · React
  • · JavaScript
  • · Angular
04

Cloud Native

Dockerized applications and dependable deployment pipelines using AWS, Jenkins, GitHub Actions, Kubernetes, and CI/CD.

  • · AWS
  • · Docker
  • · Kubernetes
  • · Jenkins
05

AI Integrations

Typed Anthropic and OpenAI integrations with Pydantic validation, provider selection, prompt caching, and cost telemetry.

  • · Anthropic API
  • · OpenAI
  • · Pydantic
0+Years shipping
0REST controllers in Rung Backend
0%Faster response time delivered
$0KSaved with in-house tools
Track record

Experience & Skills

Feb 2026 - Present

Software Developer

onAir Tech Corporation · Remote
  • React
  • JavaScript
  • WordPress
  • Content
  • Admin workflows
Apr 2023 - Dec 2023

Senior Software Engineer L1

Gemini Solutions Pvt. Ltd. · PIMCO
  • Java
  • Spring
  • Oracle
  • SQL
  • Code reviews
Apr 2022 - Mar 2023

Software Engineer L2

Gemini Solutions Pvt. Ltd. · Clovek Wealth
  • REST APIs
  • SOAP
  • Angular
  • SQL
  • 40% faster
Apr 2021 - Mar 2022

Software Engineer L1

Gemini Solutions Pvt. Ltd. · Contripoint
  • Spring Boot
  • Angular
  • Python
  • SQL
  • 15+ tickets
Apr 2020 - Mar 2021

Technical Trainee

Gemini Solutions Pvt. Ltd.
  • Spring Boot
  • REST APIs
  • Angular
  • SQL
  • Git
Open-source

On GitHub

By the numbers@Jashanveer
Activity in the last 12 months
The other stuff

Beyond Code

2019

Patent · Anti-Theft System for Vehicles

Filed at Chitkara CURIN. Arduino + GPS tracking with mobile-app control.

2022

On the Spot Award · Gemini Solutions

Awarded for exceptional project performance.

Outside the keyboard

HIKING

Weekend trails — the longer the better.

GYM

Lifting four-ish days a week, mostly compounds.

DANCING

Bhangra basics + whatever the song asks for.

RUNNING

Long, slow miles to think things through.

Let's talk

Got something
to build?

[email protected]
I'll reply within a couple of days.
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