◆ 10+ YRS — BACKEND / INFRA

Abhishek Jain

Senior Software Engineer — Building Systems at Scale.

I'm a Backend Engineer

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A little
about me.

I'm Abhishek — a backend engineer who enjoys building systems, solving problems, and understanding how things work beneath the surface. Over the years that curiosity has taken me from writing Python, Golang, PHP and TypeScript to distributed systems, cloud infrastructure, databases and automation. The engineering is only half of it — what keeps me interested is the constant chance to learn something new.

Outside of code I've been part of the developer community through conferences, meetups and talks. Music has been a constant since college — drums first, then guitar — and photography and travel give me another way to explore the world. I'm currently based in France, learning the language and a new culture, still figuring out what comes next.

  • Based — France, learning the language
  • Also — drums & guitar, photography, travel, dev-community talks

Build things. Learn constantly. Share what you know. Stay curious. Explore what's next.

Systems

Some of the skills I have acquired during my experience.

Backend

PHP Node.js Golang Python

AWS and Cloud

EC2 RDS S3 ELB SES DynamoDB SQS Lambda CloudWatch IAM GCP

Frameworks

Express NextJS NestJS Flask Laravel Symfony CodeIgniter

Frontend

TypeScript JavaScript React Vue.js Bootstrap Tailwind CSS

Databases

MySQL PostgreSQL MariaDB SQLite MongoDB Redis

DevOps and Automation

Jenkins GitHub Actions GitLab CI Docker Kubernetes Grafana

Tools and OS

Git Github Gitlab Bitbucket Slack JIRA Notion Confluence Trello Nginx Linux Mac

Experience

My journey through professional engineering roles.

2025–

Senior Software Engineer — Data

Jus Mundi, Paris, France

Jun 2025 — Present

Projects/Features contributed to:

  • Data Ingestion Pipeline — Developed and maintained the data ingestion and transformation pipelines for the Jus Mundi platform, using Golang, Kafka and Python.
  • Search Engine Optimization — Re-built the search engine APIs for the Jus Mundi platform, using ElasticSearch and PHP(Symfony).
  • System Upgrades — Upgraded the PHP version from 7.4 to 8.2 and the Symfony version from 5.4 to 6.4, and the Docker configurations to support the new version.
  • Documentation — Created and maintained the tech documentation for the internal data platform + multiple services, using Notion, Gitlab Wiki and Markdown.

Tech Stack: Golang, PHP(Symfony), TypeScript, Kafka, Python, Docker, Redis, Postgres, ElasticSearch, Nomad

2024

Backend Software Engineer — Platform

Polar Analytics, Paris, France

Oct 2024 — May 2025

Projects/Features contributed to:

  • Internal Integrations — Developed and maintained the Klaviyo API integration, handling data extraction from Klaviyo, followed by efficient storage and transformation within Polar's internal database systems.

Tech Stack: NodeJS, TypeScript, Python, Docker, Redis, Postgres, AWS

2024

Software Engineer

Escape, Paris, France

Apr 2024 — Sep 2024

Projects/Features contributed to:

Tech Stack: NodeJS, SvelteJS, TypeScript, Python, Golang, Kafka, Docker, Kubernetes, Postgres, Grafana, AWS

2022

Sep 2022 — Apr 2024

  • [WhatsApp Campaigns](https://developers.kaleyra.io/docs/whatsapp-campaign-overview) — Implemented from scratch; now handles 20M+ requests daily with performance exceeding design specifications.
  • [WhatsApp Automated Number Registration](https://developers.kaleyra.io/docs/automated-whatsapp-number-registration) — Streamlined onboarding for operations, significantly reducing time-to-value for clients.
  • [WhatsApp APIs](https://developers.kaleyra.io/docs/whatsapp-api) — Proactively refined and optimized APIs for efficient, reliable client communication.

Tech Stack: NodeJS, PHP (Laravel, Lumen), Golang, Redis, MySQL, MongoDB, Docker, Kubernetes

2021

Software Engineer

Acquia

Mar 2021 — Sep 2022

  • [Acquia Campaign Studio](https://www.acquia.com/products/acquia-campaign-studio) — Enhanced performance for large API data volumes under high load.
  • Acquia Internal Tool Automation — Reduced manual SRE workload by automating routine Campaign Studio server maintenance.
  • PHP 5.8 → 7.4 — Upgraded internal Laravel 6 tool and dependencies for security, performance, and scalability.

Tech Stack: PHP (Laravel, Symfony), Javascript, Redis, MySQL, Docker, Kubernetes

2019

Software Engineer

Collegedunia Web Pvt Ltd

Jul 2019 — Mar 2021

  • [Collegedunia.com](https://www.collegedunia.com/) — Enhanced core product features and introduced new coding practices and standards.

Tech Stack: PHP (Laravel, Monolith), Javascript, Redis, Memcached, MySQL (MariaDB), AWS Cloud

2018

Backend Developer

CTE International Pvt Ltd

Sep 2018 — Jul 2019

  • [mobi-hub.com](https://www.mobi-hub.com/) — Built entire API structure from scratch; developed REST APIs for the Mobi-Hub mobile application.

Tech Stack: PHP (CodeIgniter), Javascript (Jquery), Redis, Memcached, MySQL (MariaDB), AWS Cloud, Nginx

2016

Software Developer

Olympiad Success

Jul 2016 — Sep 2018

  • [Olympiadsuccess.com](https://www.olympiadsuccess.com/) — Enhanced core product features and implemented new coding practices.
  • [Free Saturday Online Test](https://www.olympiadsuccess.com/olympiad-test-practice/) — Built from ideation to launch; boosted sign-ups and became key product marketing.

Tech Stack: PHP (CodeIgniter), Javascript (Jquery), MySQL (MariaDB), Nginx, AWS Cloud

Education & Community

Bachelors of Technology — Computer Science

2012 — 2016

Maharshi Dayanand University, Rohtak, India

  • 1st in Inter-college PHP Competition
  • 2nd in Inter-college Band Competition

Reach Out

Location

Nanterre, Île-de-France, France

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