# Chirag Jain — Complete Portfolio (LLM-friendly full content)

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## Profile

- **Name:** Chirag Jain
- **Title:** Senior Backend Engineer · Distributed Systems & Infrastructure
- **Employer:** Meta (Facebook) · Core Systems organization
- **Location:** Las Vegas, Nevada, USA · Remote · US Pacific timezone
- **Tenure:** 7+ years professional · Joined Meta full-time February 2019 · Career start 2013

## Contact

- **Email:** er.chiragjain92@gmail.com
- **Phone:** +1-919-884-1081
- **LinkedIn:** https://www.linkedin.com/in/chiragjain92/
- **GitHub:** https://github.com/CJ8664 (handle: @CJ8664)
- **Instagram:** https://www.instagram.com/chirag.jainsta/ (handle: @chirag.jainsta)
- **Facebook:** https://www.facebook.com/er.chiragjain92/

## Languages spoken (native)

English, Gujarati, Hindi, Marathi, Marwari. Five native languages.

## About

Senior backend engineer at Meta on Core Systems with 7+ years of experience in distributed computing, backend technology, and data analytics. Communicates effectively, collaborates with stakeholders while identifying unmet needs that aren't obvious. Result-driven; has developed new solutions and enhanced existing processes in technologies including ZooKeeper, Linux, C++, Python, Rust, Java, Hack, Shell scripting, MySQL, HP-Vertica, ETL tooling, and web technologies. Performed production release management and gained working knowledge of the lifecycle of the mortgage-backed securities market during time at JPMorgan Chase.

Started career as Application Developer at JPMorgan Chase & Co. in Mumbai (2014–2017), interned at Meta in 2018, and joined Meta full-time in 2019. Co-authored published research on neuro-fuzzy / simulated-annealing optimization and stock-market prediction with neural networks. Volunteered as Technical Lead at Pratham Education Foundation. Stanford ML certified; Python specialization from University of Michigan.

**Interests:** Distributed computing, software development, data analytics, machine learning. Tech enthusiast, creative tinkerer, strong team player.

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## Work Experience (reverse chronological)

### Meta (Facebook, Inc.) — Software Engineer

- **Dates:** Feb 2019 — Present
- **Location:** Menlo Park, CA · Foundational and Core Systems organization
- **Achievements:**
  - Developing a ZooKeeper-based ultra-low-latency distributed configuration system with resilient and secure client APIs that serves more than 2.5 trillion QPM for millions of Meta's hosts and services globally.
  - Developed a terabyte-scale, real-time log-processing framework and a targeting algorithm for safe config deployment across every product and service.
  - Built demand control to prevent downtime in critical services via capacity planning and data analytics of request load.
  - Partnering with Foundational and Core Systems teams to enhance the scalability and reliability of Meta's global infrastructure.
  - Ensuring stability and successful deployment of services by improving instrumentation and monitoring of health metrics.
  - End-to-end ownership of multiple subsystems — design → IDL → service → client → rollout → on-call → docs.
- **Tech:** ZooKeeper, Linux, C++, Python, Rust, Java, Hack, Go, MySQL, HP-Vertica.

### Meta (Facebook, Inc.) — Software Engineer Intern

- **Dates:** May 2018 — Aug 2018
- **Location:** Menlo Park, CA · Apps for Groups
- **Achievements:**
  - Developed mediums of communication — custom group posts, push notifications, upsells — to promote the "Apps for Groups" product, driving growth and adoption that connects and engages communities.
  - Created a searchable App directory using Hack/PHP, React, and JavaScript so admins of Facebook groups could discover and add applications, improving user experience and convenience.
  - Incorporated funnel logging in admin/member activity flows to understand user behavior and inform redesigns that simplified navigation and reduced bounce rate.
- **Tech:** Hack, React, Native Templates, JavaScript, Mercurial.

### JPMorgan Chase & Co. — Associate

- **Dates:** Jan 2017 — Jul 2017
- **Location:** Mumbai, India · Mortgage-Backed Securities
- **Achievements:**
  - Led a four-member team and successfully delivered an Informatica project to centralize storage of vendor-published market data.
  - Developed ETL processes using Python and BIDS to load mortgage-performance data published by government agencies and private vendors. Performed calculations on patterns to generate reports for current trade execution and prediction models.
  - Acted as Production Release Manager — designed an automated deployment system and enforced industry-standard SDLC models, code quality, and security.
- **Tech:** Python, Shell, C#, SQL Server Management Studio, BIDS, Informatica.

### JPMorgan Chase & Co. — Application Developer

- **Dates:** Jul 2014 — Dec 2016
- **Location:** Mumbai, India · Mortgage-Backed Securities
- **Achievements:**
  - Improved SQL processes by adding partitions, batches in queries, and indexes — reducing process runtime from days to hours.
  - Participated in philanthropic initiatives and developed technology solutions for partner NGOs. Counseled NGOs on operation-automation and infrastructure maintenance.
  - Gathered business requirements by interacting with clients and suggested technical improvements that helped the business automate processes.
- **Tech:** Python, Shell, C#, SQL Server Management Studio, BIDS.

### Pratham Education Foundation — Technical Lead (volunteer)

- **Dates:** Aug 2016 — Aug 2017
- **Location:** Mumbai, India · NGO engineering
- **Achievements:**
  - Leveraged Joget Workflow Tool, Java, and Microsoft Azure to create a web- and mobile-ready cloud-based HR and Expense Management system. Helped the NGO automate manual tasks and scale operations — projected savings of ~$150,000 / year.
  - Designed and co-implemented a Selenium test-suite to enable sustainable development for the NGO.
- **Tech:** Java, MySQL, Microsoft Azure, Joget, Selenium.

### ShipEasy — Co-Developer

- **Dates:** Sep 2013 — Jul 2014
- **Location:** Mumbai, India · Logistics startup
- **Achievements:**
  - Developed an SEO-optimized responsive online web portal using PHP, Bootstrap, and JavaScript.
  - Designed a rule-based reminder system using emails and SMS for logistics providers and customers.
  - Incorporated the Google Maps API to generate shipment quotations using distance, cargo, and other metrics.
- **Tech:** PHP, HTML, Bootstrap, JavaScript, Google Maps API.

### CAV Aviation Services — Web Developer

- **Dates:** Jul 2013 — Sep 2013
- **Location:** Mumbai, India · Aviation services
- **Achievements:**
  - Designed and built the company website for CAV Aviation Services Pvt. Ltd. with various aviation-services offerings for clients.
  - Loaded all content at once for offline-readable browsing; admin panel for dynamic content updates.
  - Optimized loading via hidden inner-HTML division technique.
- **Tech:** HTML, CSS, PHP, JavaScript, jQuery, SEO.

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## Education

### Master of Science, Computer Science

- **School:** North Carolina State University · Raleigh, NC, USA
- **Dates:** Jan 2017 — Dec 2018
- **Coursework:** Advanced Computer Networks, Advanced Database Management Systems, Analysis of Algorithm and Design, Data Driven Decision Making, Data Warehouse and Mining, Database Management Systems, Machine Learning, Spatial and Temporal Data Mining, Web Engineering, Robotics & Artificial Intelligence, Operating Systems.

### Bachelor of Engineering (B.E.), Computer Engineering

- **School:** Dwarkadas J. Sanghvi College of Engineering · University of Mumbai · Mumbai, India
- **Dates:** Jan 2010 — Dec 2014
- **Achievement:** 5th rank overall amongst all students from various specializations in the college. Authored three IJCSE research publications during this period.
- **Coursework:** Object-Oriented Design and Development, Object-Oriented Software Engineering, Data Structures and Files, Computer Programming, Computer Graphics, Mathematics, Communication Skills.

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## Featured Projects

### 1. Servo Open-Source Microdata API contribution

October 2017 · Rust · Mozilla / Servo web-rendering project

Contributed to the Servo open-source web-rendering project by designing an algorithm to extract machine-readable metadata from web content. The metadata is used to generate vCard / vEvent files via servoshell embedding.

### 2. Wolfpool — Plan Your Rides

January 2018 – March 2018 · Raleigh · NCSU MS project

Managed and designed an Amazon Elastic Beanstalk PaaS deployment for a responsive web application built with Node.js and MongoDB. Wolfpool facilitates planning and sharing of car rentals, Uber, and Lyft rides via a spatial-temporal rule-based system — useful where UberPool / Lyft Line are unavailable. Tech: AWS Elastic Beanstalk, Node.js, MongoDB, HTML, jQuery, CSS.

### 3. Assessment of Twitter as a Review Platform

March 2018 – April 2018 · Raleigh · NCSU MS project

Statistical and sentiment analysis on tweets using Python NLTK to formulate custom indices and scores. Investigated whether extracting product/service reviews from Twitter could be automated. Tableau visualizations of contributing factors. Tech: Python NLTK, Cassandra, Apache Spark, Tableau, Twitter API.

### 4. Pratham Vyaya — HR & Expense Management

August 2016 – August 2017 · Mumbai · Volunteer at Pratham Education Foundation

Used Joget Workflow Tool, Java, and Microsoft Azure to build a responsive web/mobile platform for Pratham Education Foundation. Automated manual tasks, scaled operations — projected savings ~$150,000/year. Co-implemented Selenium test-suite for sustainable development. Tech: Java, MySQL, Joget, Microsoft Azure, Selenium.

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## Other Noteworthy Projects

### Graduate Projects (NCSU 2017–2018)

- **Automobile Recommendation System** (Jan 2018 – Apr 2018) — Recommender for automobiles based on indirect user profile, car specifications, and semantic analysis of reviews using NLP. Tech: Python NLTK, SQL.
- **House Price Prediction & Crime Co-relation Analysis** (Jan 2018 – Apr 2018) — Regression and other models on house prices, with spatial-temporal correlation to crime rates. Tech: Python scikit-learn, QGIS.

### Undergraduate & Early Projects (2012–2017)

- **Optimization of Traveling Salesman Problem** (Jun 2013 – Jun 2014) — Hybrid ANFIS + Simulated Annealing for path determination. Foundation for two IJCSE publications. Tech: C#, MySQL, Machine Learning, Simulated Annealing.
- **ShipEasy.in Logistics Marketplace** (Dec 2013 – Apr 2014) — Mobile-responsive web platform for logistics with Google Maps distance API and SMS/email reminders. Tech: HTML, Foundation CSS, PHP, jQuery, JavaScript, SEO, Google Maps API.
- **Attendance Tracking Solution** (Jul 2013) — Real-time, paperless attendance tracker for Teach For India built in under 24 hours at JPMorgan Code For Good Challenge Mumbai 2013. Winning team. Tech: HTML, CSS, PHP, MySQL, JavaScript, Exotel SMS API.
- **GSM Simulator** (Aug 2013) — Desktop application simulating mobile-user position in a GSM environment. Graph-coloring algorithm for base-station assignment, dynamic frequency allocation/reuse, HLR/VLR. Tech: C# .NET.
- **SmartPower** (Jun 2013) — Desktop application for timed auto-shutdown of computers in lab setups. Tech: C# .NET.
- **ETL Data Warehouse & Mining Tool** (Mar 2013 – Sep 2013) — Data-analysis tool extracting from .sql/.accdb/.txt/.xlsx, cleaning, loading into MS Access. SQL search query engine; Naïve Bayes, K-Nearest Neighbours, K-Means Clustering, Hierarchical Clustering implementations. Tech: Java, MySQL.
- **CAV Aviation Services website** (Feb 2013 – Mar 2013) — Company website with offline-readable content and dynamic admin panel. Tech: HTML, CSS, PHP, JavaScript, jQuery, SEO.
- **Technofocus-djsce.org** (Jul 2012 – May 2013) — Online platform for engineering students/faculty to publish research with admin panel. Tech: HTML, CSS, PHP, MySQL.
- **CodeOutOfBounds.com** (Jul 2012 – Nov 2012) — Platform for student programming needs with full-text search. Tech: HTML, CSS, PHP, JavaScript, jQuery, SEO.
- **AngryArmy** (May 2012 – Dec 2012) — 2D Java-applet game with projectile motion impacted by wind direction/speed. Tech: HTML, CSS, Java Applet.

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## Skills

- **Programming languages:** Python (expert), C++ (expert), Rust (advanced), Java (advanced), Go (working), PHP / Hack (working), C# (working), JavaScript / jQuery (working). Strong typed-IDL design.
- **Distributed systems:** Distributed configuration management, distributed computing at hyperscale, RPC frameworks, distributed graph stores, distributed key-value stores, distributed log-store / streaming pipelines (at-least-once semantics), distributed coordination (ZooKeeper / leader election), object storage with atomic uploads and integrity hashing.
- **Data & observability:** Real-time analytics platforms, time-series monitoring, distributed batch pipelines, SQL-on-Hadoop / distributed SQL engines (HP-Vertica for columnar analytics), in-house sampling profilers. ETL with Informatica, BIDS, SQL Server Management Studio. Tableau, NLTK, scikit-learn, Cassandra, Apache Spark.
- **Platform & release:** Container orchestration, service discovery and RPC routing, continuous-deployment pipelines, dynamic feature flags, distributed version control (Sapling / Mercurial / Git fluency). Production release management.
- **Cloud & web:** AWS (Elastic Beanstalk), Microsoft Azure, Google Maps API, Node.js, MongoDB, MySQL, MS-SQL. HTML, CSS, Bootstrap, jQuery, React, Native Templates, PHP/Hack.
- **ML & analytics:** Classification, clustering, neural networks, neuro-fuzzy systems, regression, sentiment analysis, NLP. scikit-learn, NLTK, Tableau, QGIS. Stanford ML certified.
- **Domains:** Reliability and on-call, performance optimization, large-scale migrations, cross-language API design and FFI plumbing, production-incident response, static analysis / codemod-driven refactors, build & release infrastructure.
- **Communication:** Technical writing, live tech talks, onboarding curriculum design, mentorship, operator-facing CLIs and runbooks, breakglass-procedure authoring. Three published research articles.

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## Certifications

- **Machine Learning** — Stanford University · July 2017.
- **Capstone: Retrieving, Processing, and Visualizing Data with Python** — University of Michigan, Coursera · October 2016 · License [JWSMKU7RXUDA](https://www.coursera.org/account/accomplishments/verify/JWSMKU7RXUDA).
- **Python for Everybody Specialization** — University of Michigan, Coursera · November 2015 · License [PNQ744S5WJLS](https://www.coursera.org/account/accomplishments/specialization/PNQ744S5WJLS).
- **Using Databases with Python** — University of Michigan, Coursera · January 2016 · License [THWSN85CUSAZ](https://www.coursera.org/account/accomplishments/verify/THWSN85CUSAZ).
- **Using Python to Access Web Data** — University of Michigan, Coursera · December 2015 · License [MZCX5PFD3X44](https://www.coursera.org/account/accomplishments/verify/MZCX5PFD3X44).
- **Programming for Everybody (Getting Started with Python)** — University of Michigan, Coursera · November 2015 · License [6PBY4K7MGG3E](https://www.coursera.org/account/accomplishments/verify/6PBY4K7MGG3E).
- **Python Data Structures** — University of Michigan, Coursera · November 2015 · License [LST726K4PTEV](https://www.coursera.org/account/accomplishments/verify/LST726K4PTEV).
- **Android Course** — Neebal Technologies · June 2012.
- **Ethical Hacking** — Kyrion Technologies · October 2010.

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## Publications

All in the *International Journal of Computer Science and Engineering* (IJCSE) · ISSN (Online) 2278-9979 · ISSN (Print) 2278-9960.

1. **Optimization of Traveling Salesman Problem for an Enterprise Resource Planning System | Implementation** — July 30, 2014. Implemented a hybrid approach comprising an Adaptive Neuro-Fuzzy Inference System (ANFIS) and Simulated Annealing algorithm to determine paths based on distance, profit, and probability of deal. Co-author: Richa Shah. URL: http://www.iaset.us/view_archives.php?year=2014_14_2&id=14&jtype=2&page=5.

2. **Neural Network Applications in Stock Market Predictions** — November 30, 2013. Proposed the use of neural networks to interpret complex stock-market patterns for traders, enabling quick, calculated, and informed decisions. Co-authors: Himali Jani, Shreyansh Jain, Kiran Bhowmick. URL: http://www.iaset.us/view_archives.php?year=2013&id=14&jtype=2&page=6.

3. **Optimization of Traveling Salesman Problem for an Enterprise Resource Planning System** — October 30, 2013. Proposed a practical use case of the classical Traveling Salesman Problem to determine the shortest path, using ANFIS and Simulated Annealing. Co-author: Richa Shah. URL: http://www.iaset.us/view_archives.php?year=2013&id=14&jtype=2&page=5.

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## Awards & Recognition

- **Technology Analyst Development Program** — JPMorgan Chase & Co. selective early-career rotational program.
- **Winning Team — Code For Good Challenge** — JPMorgan Chase, Mumbai 2013. Built a paperless real-time attendance tracker for Teach For India in under 24 hours.
- **Runners-up — National Level Technical Paper Presentation** — India · undergraduate research presentation.
- **5th Rank Overall (College)** — Dwarkadas J. Sanghvi College of Engineering, across all specializations.
- **Mrs. Momi A. Ochani Scholarship** — Merit-based undergraduate scholarship.
- **National Standard Examination in Physics (NSEP)** — Qualified · Indian national physics olympiad screening.

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## Working-Style Principles

1. **End-to-end ownership** — through every layer: design → IDL → service → client → rollout → on-call → docs.
2. **Migration discipline** — finished migrations, with the legacy code path removed (never just deprecated).
3. **Reliability mindset** — observable, reversible, gradient-rolled changes. Mitigate, clean up, then add monitoring.
4. **Communication as a deliverable** — documentation is a first-class artifact, not a footnote.
5. **Patient performance** — many small instrumented wins beat one heroic rewrite.
6. **Operator empathy** — CLIs, runbooks, and breakglass procedures for the engineer who comes next.
7. **Cross-language fluency** — coherent abstractions across language boundaries, with FFI plumbing in between.
8. **Multi-attempt resolve** — when a rollout has to revert, it gets re-attempted, not abandoned.

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## Career Trajectory (5 phases)

1. **2019 – 2020 · Mid-level engineer** — Joined Meta full-time on Core Systems. Built a multi-axis admission-control service from scratch. Landed in a fleet-wide usage-tracking pipeline. Joined the on-call rotation. First two recorded internal tech talks delivered.
2. **2020 – 2022 · Subsystem owner** — Drove a Python 2 → 3 migration of ~30 modules; owned a release-controller notification stack. Two more recorded tech talks. Began co-authoring onboarding curricula. Cross-pod rotation through a client-API team.
3. **2022 – 2024 · Cross-system contributor** — Multiple on-call rotations. Contributed to canary/safety subsystems. Led a 5-phase rollout in a major consumer-product surface (with full revert + re-rollout). Drove a series of large codemods. Began long-running graph/expansion-rule cleanup. Wrote a breakglass runbook for an emergency config-update path.
4. **2024 – 2026 · Senior subsystem owner** — Built and rolled out a new control-plane service from boilerplate to production. Repeated the playbook for a sister service weeks later. Ran a sustained 50+ patch dependency-resolver optimization campaign. Led a snapshot-format migration across all production shards. Authored the canonical IDE setup wiki for the dev fleet. Began driving a weekly design-review series.
5. **2026 – present · Tech lead in scope** — Drives design-review series, operational stability, and platform-wide migrations. Mentors new hires through onboarding docs and 1:1 walkthroughs. Active adoption of AI-driven tooling for repetitive maintenance work.

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This file is generated for AI-agent / LLM consumption. Source data is the same as https://chiragjain.info/. Last updated 2026.