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shubh9457/README.md

Hi 👋, I'm Shubh Saxena

Lead Engineer @ GoHighLevel · Distributed Systems @ Scale · Golang | Node.js | Python

shubh9457 Open to Staff/Principal roles

  • 🔭 Currently a Lead Engineer at GoHighLevel (since Apr 2026), on the Contacts Platform team — improving system design and architecture at scale
  • 🏗️ Previously Lead Backend Engineer at Brevo and Core Architect at DLT Labs, building high-availability distributed systems at 100M+ record scale
  • 🌱 Focused on distributed systems, high-throughput data architecture, and applied Machine Learning
  • 👯 Looking to collaborate on Go microservices, large-scale data pipelines, and ML projects
  • 💼 Open to Staff / Principal Engineer opportunities
  • 🎓 BTech in Computer Science, APJ Abdul Kalam Technical University (84.6%)
  • 🔬 Former Junior Research Intern (Computer Vision) at IIT Patna — received a letter of appreciation for research contributions
  • ⚡ Fun fact: AKTU State-Level Football Championship winner, still up for a match anytime

🏆 Highlights

Brevo — Lead Backend Engineer / Distributed Systems Specialist (Jul 2023 – Mar 2026)

  • Architected the migration of mission-critical contact management microservices from Node.js to Go, scaling to 1,000+ RPS / 40k+ ops/min while supporting 100M+ contacts
  • Drove a 50% reduction in text-based query latencies by redesigning data segmentation pipelines across PostgreSQL, ClickHouse, and Redis
  • Introduced system-design review processes that cut post-release production anomalies by over 30%
  • Led and mentored a backend squad, setting technical direction and CI/CD & monitoring standards

DLT Labs — Software Engineer → Senior Software Engineer → Lead Engineer (2019–2023)

  • Core Architect for an enterprise blockchain-based supply chain and financial settlement platform, scaling transaction processing from 2k to 40k ops/min
  • Designed a real-time, multi-source data replication engine that unlocked dynamic CRM segmentation
  • Built automated self-healing production workflows preserving 99.99% availability SLAs
  • Recognized as 'Top Achiever', 'Best Improvement', and 'Most Efficient Developer'

🚀 Featured Work

  • high-scale-search — Go search orchestration service designed for 10B+ records at sub-200ms p99 latency, unifying Elasticsearch, ClickHouse, Firestore, Redis, and Kafka behind a fault-tolerant pipeline
  • Segmentation Engine (CRM, professional work) — abstracted query engine joining ClickHouse, PostgreSQL, Redis, and MongoDB on the fly with sub-second latencies, solving dynamic segmentation at 100M+ contact scale with no predefined schema contracts
  • Plant Disease Classification (Android + TensorFlow Lite) — hackathon project (CDAC, Hyderabad) enabling real-time, offline plant disease detection from leaf images on-device
  • Pay_slip_generation — backend service for generating employee salary/taxation records
  • speaker-recognition — GMM + MFCC-based speaker recognition system

✍️ Writing on Medium


🛠️ Tech Stack

Go Node.js Python JavaScript MongoDB Docker Google Cloud Kafka Kubernetes PostgreSQL ClickHouse


🌐 Connect with me

LinkedIn Instagram Medium LeetCode


📊 GitHub Stats

GitHub followers GitHub stars

Shubh's GitHub streak

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  1. speaker-recognition speaker-recognition Public

    Speaker Recognition aims to recognize which speaker is speaking! We have coded a simple GMM model and used MFCC Features for the feature extraction

    Python 1 1

  2. News-Scrape-and-cluster News-Scrape-and-cluster Public

    A simple KMeans clustering model build upon to cluster the news articles on the basis of similarity

    Jupyter Notebook 1

  3. Pay_slip_generation Pay_slip_generation Public

    Node.js + Express backend service that generates monthly employee salary and tax pay slips as tabular records.

    JavaScript 1

  4. high-scale-search high-scale-search Public

    Production-grade Go search orchestration service designed for 10B+ records at sub-200ms p99 latency — unifies Elasticsearch, ClickHouse, Firestore, Redis, and Kafka behind a fault-tolerant search p…

    Go

  5. ML-Algorithms ML-Algorithms Public

    Built only for demonstration of ML algorithms from scratch

    Jupyter Notebook