Mohd Kamran Tahir, Developer in Delhi, India
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Mohd Kamran Tahir

Bio

Kamran is a senior back-end and platform engineer with 6 years years of experience building high-throughput services, event-driven systems, APIs, SDKs, and cloud-native platforms. He specializes in Go, Node.js, TypeScript, PostgreSQL, AWS, Kafka, and Kubernetes, with production experience across fintech, AI/OCR, LLM workflows, and developer tooling.

Portfolio

Trelium
TypeScript, Next.js, React, PostgreSQL, Artificial Intelligence (AI)...
LeapOCR
Go, TypeScript, React, Kubernetes, Temporal Cloud, Windows, REST APIs...
Zeller
Go, AWS IAM, AWS Lambda, Node.js, TypeScript, Windows, REST APIs...

Experience

  • Amazon Web Services (AWS) - 6 years
  • TypeScript - 6 years
  • Back-end - 6 years
  • Node.js - 6 years
  • PostgreSQL - 6 years
  • Microservices - 6 years
  • APIs - 6 years
  • Go - 5 years

Preferred Environment

Windows, Linux, MacOS

The most amazing...

...thing I've built is a one-click WhatsApp login system that made authentication near-instant for 40+ million users.

Work Experience

Member of Technical Staff

2026 - PRESENT
Trelium
  • Contributed to Trelium's AI agent platform, turning plain-English workflow descriptions into automations that run across business apps.
  • Built product surfaces and platform workflows with TypeScript, Next.js, React, and PostgreSQL for a YC-backed, fast-iterating engineering team.
  • Integrated reliable data and task flows for branded merchandise operations, reducing repetitive order-entry and quote-creation work.
Technologies: TypeScript, Next.js, React, PostgreSQL, Artificial Intelligence (AI), Distributed Systems, Third-party Integration, Supabase, AI Tools, Workflow Automation, Agentic AI, Product Management, Vibe Coding, Software Architecture, Communication, Back-end Development, Amazon Bedrock AgentCore, Model Context Protocol (MCP), Datadog, AI Agents, Containers, Multi-tenant SaaS, Document Parsing, Data Extraction, Authentication, Third-party APIs

Founder & Lead Back-end Engineer

2025 - PRESENT
LeapOCR
  • Architected and deployed a highly concurrent document extraction platform using Go, orchestrating complex multi-engine asynchronous workflows (Vision OCR and LLM QA) to achieve 99.9% data accuracy.
  • Implemented Temporal.io to manage robust, fault-tolerant job queues, ensuring reliable state management, automated retries, and zero dropped payloads during high-traffic spikes.
  • Engineered an event-driven webhook architecture and developed official type-safe SDKs (Go, Python, and TypeScript) to allow seamless, sub-50ms latency integrations for enterprise clients.
  • Designed a strict zero data retention pipeline processing 50,000+ documents per week.
Technologies: Go, TypeScript, React, Kubernetes, Temporal Cloud, Windows, REST APIs, API Integration, Event-driven Architecture, Artificial Intelligence (AI), Distributed Systems, Third-party Integration, Search Engines, AI Tools, Workflow Automation, Agentic AI, Product Management, Vibe Coding, Software Architecture, Communication, Back-end Development, Model Context Protocol (MCP), Datadog, AI Agents, Containers, Multi-tenant SaaS, Document Parsing, Data Extraction, Authentication, Third-party APIs

Senior Software Engineer (Back end)

2024 - 2025
Zeller
  • Led the back-end integration of Tevalis POS with Zeller’s distributed ecosystem, engineering fault-tolerant data synchronization across multiple point-of-sale architectures.
  • Architected and deployed highly available microservices using Go, Node.js, and AWS, significantly improving data consistency across the payments network.
  • Optimized infrastructure, multi-layer caching, and parallelized workflows, successfully slashing CI/CD build and test execution times from 40 minutes to 8 minutes.
  • Strengthened system reliability by expanding automated integration testing coverage for critical back-end services, eliminating high-severity post-deployment regressions.
Technologies: Go, AWS IAM, AWS Lambda, Node.js, TypeScript, Windows, REST APIs, API Integration, Payments, Fintech, Distributed Systems, Third-party Integration, AI Tools, Workflow Automation, Communication, Back-end Development, Datadog, Containers, Authentication

Software Development Engineer II

2023 - 2024
ShibaInu
  • Developed an end-to-end analytics pipeline using AWS (API Gateway, Kinesis Firehose, AWS Glue, S3, and Athena), processing over 100,000 events per minute, ensuring high scalability and performance.
  • Implemented supporting service and UI integrations with React, Next.js, and TypeScript across the analytics and ads platform.
  • Built and scaled high-throughput data ingestion microservices using Go and NATS.io, ensuring zero data loss during traffic spikes.
  • Developed a centralized Ads and Analytics SDK back end in TypeScript to standardize real-time event tracking and analytics aggregation.
  • Streamlined DevOps operations by refactoring Dockerfiles and containerization strategies, reducing average image sizes by 80–90% and decreasing deployment times.
  • Delivered production services across Node.js, React, Next.js, Go, TypeScript, NATS.io, PostgreSQL, and AWS in a fast-moving product environment.
Technologies: Go, DevOps, AWS IoT, Node.js, TypeScript, React, Next.js, SDKs, JavaScript, API Gateways, AWS Glue, Amazon S3 (AWS S3), MongoDB, Tailwind CSS, Full-stack, Amazon Web Services (AWS), Rust, Back-end, Architecture, CI/CD Pipelines, APIs, Lambda Functions, Microservices, AWS Lambda, Amazon Kinesis, NoSQL, Full-stack Development, Windows, REST APIs, API Integration, Event-driven Architecture, Distributed Systems, Third-party Integration, Back-end Development, Containers, Authentication

Back-end Developer

2022 - 2023
GoKwik
  • Architected an event-driven Kafka queue system for high-volume webhook consumption, ensuring reliable, decoupled message processing between Shopify, WooCommerce, and internal microservices.
  • Spearheaded the back-end system design of a new partial payments architecture using Node.js, TypeScript, and PostgreSQL, driving a 20%+ reduction in order cancellations.
  • Migrated critical components from a monolithic service to a microservice architecture with Node.js, React, Go, and Docker, enhancing scalability, fault isolation, and debugging efficiency.
  • Developed highly concurrent back-end services to support a one-click WhatsApp login feature, successfully handling traffic from an active user base of over 40 million.
  • Implemented end-to-end feature delivery across Node.js, TypeScript, React, Go, Kafka, Redis, MongoDB, and PostgreSQL for scalable checkout services.
  • Collaborated across back-end, infrastructure, and integration layers using Kafka, AWS, Jenkins, Redis, MongoDB, and PostgreSQL to ship resilient commerce services.
Technologies: Go, Apache Kafka, Redis, Node.js, TypeScript, DevOps, SDKs, Microservices, MongoDB, Tailwind CSS, Full-stack, Amazon Web Services (AWS), Rust, Back-end, Architecture, CI/CD Pipelines, APIs, NoSQL, Full-stack Development, eCommerce, Windows, REST APIs, API Integration, Payments, Fintech, Event-driven Architecture, WhatsApp API, Distributed Systems, Third-party Integration, Back-end Development

Full-stack Developer

2021 - 2022
Deloitte
  • Played a key role in developing custom pages with mobile-first, responsive designs using React for a white-label solution, consistently delivering high-quality work within tight deadlines.
  • Modernized the legacy codebase by porting jQuery/JS components to ReactJS, significantly improving the developer experience and accelerating the development process.
  • Developed high-performance, scalable solutions using AWS Lambdas for serverless functions, ensuring efficient and optimized execution.
  • Worked alone on an initiative to improve build times, achieving a 10x reduction and significantly enhancing developer experience and productivity.
  • Utilized Node.js, TypeScript, AWS Lambda, DynamoDB, React, jQuery, and SCSS to deliver robust and efficient solutions, integrating various third-party REST APIs.
Technologies: Amazon DynamoDB, React, Node.js, TypeScript, Full-stack, Back-end, APIs, AWS Lambda, Lambda Functions, Microservices, NoSQL, Full-stack Development, REST APIs, Third-party Integration

Web Developer

2020 - 2020
Hackstrap
  • Implemented strategic front-end optimizations for better SEO, increasing customer acquisition and improving search engine rankings, thereby driving organic growth.
  • Developed and integrated various data visualization pages using optimal React-based libraries, significantly improving client information accessibility.
  • Demonstrated proficiency in front-end development techniques and leveraged React to create visually appealing and interactive user interfaces.
Technologies: React, Node.js, CSS, JavaScript, Full-stack, Back-end, APIs, Full-stack Development

Experience

ReviewHQ

A comprehensive SaaS application to enhance the review system of eCommerce sites, and, as for the tech stack, Go with Chi and Huma on the back end, Python for the LLM-related pipelines, and React on the front end are used. The app includes features like autocomplete to make writing reviews easier, spam checking to ensure content integrity, and large language models (LLMs) support to improve user interaction.

The application integrates quality assurance (QA) to maintain high standards and offers an easy user funnel for a seamless review submission process. Additionally, it provides tools for analyzing user thoughts, automatically extracts key topics from reviews, and reports on any issues, helping to gain valuable insights and address customer concerns efficiently.

ReMTL

A full-stack app created for avid readers to scrape, save, and translate Chinese novels. This was my 1st big project, mainly done in Node.js, TypeScript, and React.

Users can review per novel, comment per chapter, upvote, downvote, etc.

LeapOCR

Turn unstructured documents into structured intelligence with enterprise-grade accuracy. LeapOCR blends computer vision with language models. The platform uses a schema-first OCR approach for messy, real-world documents, transforming PDFs, scans, photos, and multilingual paperwork into Markdown for review or JSON that already fits downstream schemas.

Tafsir API

https://github.com/spa5k/tafsir_api
Tafsir API is a public REST-style data API that provides free access to Quran tafsir content for websites and applications. I built it to be simple to consume, fast to serve through static/CDN-friendly endpoints, and easy for developers to self-host. The project supports multilingual tafsir editions, no-rate-limit access patterns, clear endpoint versioning, and contribution paths for expanding the data set.

uids-postgres

https://github.com/spa5k/uids-postgres
uids-postgres is a PostgreSQL extension for generating modern unique identifiers directly inside the database. I built it in Rust to support UUID v6/v7, NanoID, KSUID, ULID, TypeID, Timeflake, PushID, and CUID2 workflows, giving teams database-native ID generation for distributed systems. The project focuses on ergonomics, data integrity, predictable SQL functions, and scalable identifier strategies for high-volume applications.

Next.js App Router Electron

https://github.com/spa5k/nextjs_approuter_electron
nextjs_approuter_electron is a public TypeScript template for building desktop apps with Electron and the Next.js App Router. I created it to combine Electron with SSR and React Server Components, giving developers a practical starting point for modern desktop apps without losing the productivity of the Next.js ecosystem. The project demonstrates cross-platform app architecture, packaging concerns, and full-stack UI patterns.

Education

2016 - 2020

Bachelor of Technology (BTech) in Computer and Information Sciences

Dr. A.P.J. Abdul Kalam Technical University - Lucknow, India

Skills

Libraries/APIs

Node.js, React, REST APIs, WhatsApp API

Tools

GoLand, AWS Glue, TanStack Router, AWS IAM

Languages

Go, TypeScript, JavaScript, Rust, CSS

Paradigms

Microservices, Event-driven Architecture, Model Context Protocol (MCP), DevOps

Storage

PostgreSQL, MongoDB, Redis, NoSQL, Datadog, Amazon DynamoDB, Amazon S3 (AWS S3)

Frameworks

Tailwind CSS, Electron, Next.js

Platforms

Apache Kafka, Amazon Web Services (AWS), AWS Lambda, Windows, Linux, AWS IoT, MacOS, Kubernetes, Docker, Temporal Cloud

Other

Large Language Models (LLMs), SDKs, Full-stack, Back-end, CI/CD Pipelines, APIs, Full-stack Development, API Integration, Third-party Integration, AI Tools, Workflow Automation, Vibe Coding, Back-end Development, Containers, Multi-tenant SaaS, Authentication, Third-party APIs, Lambda Functions, Payments, Fintech, eCommerce, Artificial Intelligence (AI), Distributed Systems, Supabase, Agentic AI, Product Management, Software Architecture, Communication, Amazon Bedrock AgentCore, AI Agents, Document Parsing, Data Extraction, Software Development, SaaS, API Gateways, Architecture, Amazon Kinesis, Cloudflare, Search Engines

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