Headline

Software Developer at Astrea (Backend Focused Full Stack Dev)

About

I’m a backend-focused software engineer who enjoys turning complex product requirements into systems that are reliable, predictable, and practical to operate. Most of my work sits around backend architecture, distributed workflows, integrations and increasingly AI-powered products. I’ve built microservices, event-driven pipelines, ETL systems, payment and fulfillment workflows, real-time applications and AI features where correctness and data boundaries matter. I’m particularly interested in the less glamorous parts of engineering - idempotency, authorization, failure handling, consistency, retries, observability, and designing systems that behave well when things inevitably go wrong. I also work with AI as an engineering tool, both inside products and in my own development workflow. I’ve worked with RAG, vector search, context engineering, agentic workflows, OCR, and human-in-the-loop guardrails, while using tools such as Claude, Codex, Cursor, and other AI-assisted development workflows. I see AI as a force multiplier, not a substitute for engineering judgment. I still believe the engineer is responsible for understanding, reviewing, challenging, and sometimes rejecting the output. What I bring is end-to-end ownership: understanding the requirement, shaping the architecture, building the system, integrating external services, deploying it and thinking through what happens in production. Technologies I work with: Backend & Systems — Node.js, TypeScript, Express.js, Python, REST APIs, Microservices, Event-Driven Architecture Data & Infrastructure — MongoDB, PostgreSQL, Prisma, Redis, RabbitMQ, Docker, AWS (IAM, EC2, Lambda, S3, VPC) AI Engineering — RAG, Prompt & Context Engineering, Agentic Workflows, Human-in-the-Loop Systems Real-Time & Frontend — Next.js, React, WebSockets, Socket.IO, WebRTC Integrations & Platforms — ETL Pipelines, Salesforce APIs, Razorpay, Stripe, Shiprocket DevOps & Observability — AWS, Nginx, Prometheus, Grafana, Sentry, Structured Logging I’ve also solved 1,500+ DSA problems, which has given me a strong foundation for reasoning about algorithms, performance, and trade-offs. More about my work at: kaleemahmed.in

Location

Kanpur

AI stack

antigravity

claude

langgraph

perplexity

CrewAI

Zapier

Work experience

Software Developer at Astrea IT Services, Jul 2024 - Present · 2 y 2 mo, Noida, Designed and built backend integration systems connecting Salesforce, SAP, eCommerce platforms and external services, translating business workflows into reliable Node and Python-based processing pipelines. Built a Node.js middleware and bi-directional ETL layer for synchronizing business data across distributed enterprise systems, with idempotent upserts, composite keys, transaction boundaries, duplicate prevention, retry strategies and failure reconciliation. Developed asynchronous, event-driven workflows using RabbitMQ and queue-based execution, with acknowledgements, retries and DLX handling for reliable processing under varying workloads. Extended Salesforce capabilities through custom middleware and Metadata API integrations, implementing OAuth2 auth, token caching, automated routing and integration workflows that reduced manual reconciliation. Contributed to AI-powered document automation for insurance workflows, combining OCR, LLM-based extraction, deterministic rules, validation, SQS, evidence-based responses and human review to improve accuracy while keeping document processing controlled and predictable. Built AI-assisted workflows for voice and text-based business processes, including grounded entity extraction, catalogue validation, deterministic transformations, bounded clarifications, and confirmation gates driving business actions. Delivered production applications using Node.js, TypeScript, Python, PostgreSQL, Prisma, Redis, Next.js, and external APIs, working across backend logic, data models, integrations, and application workflows. Containerized and deployed production systems using Docker and AWS with Nginx, CI/CD, structured logging, Sentry, Prometheus, and Grafana to support operational visibility, debugging, and reliable releases. Owned features end-to-end from understanding requirements and defining technical approaches to implementation, deployment, production debugging, documentation, and handover across multiple client platforms.

Software Developer at Astrea IT Services, Jan 2024 - Apr 2024 · 4 mos, Noida, Uttar Pradesh, India

Education

Bachelor's of technology, Artificial Intelligence and Machine Learning, ALLENHOUSE INSTITUTE OF TECHNOLOGY, KANPUR

Public links

github: https://github.com/KaleemAhmed123

leetcode: https://leetcode.com/Kaleem_Ahmed

kaleemahmed.in: https://kaleemahmed.in/