Sandeep Kumar

Software Engineer

Bengaluru, Karnataka, India8 yrs 5 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

7+ years of experience in backend engineering.
Expertise in scalable microservices and cloud-native architectures.
Proven track record in mentoring and team leadership.

Stackforce AI infers this person is a Backend-heavy SaaS Engineer with strong expertise in microservices and cloud technologies.

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Skills

Core Skills

Backend EngineeringDistributed Systems & Microservices

Other Skills

Node.jsFastAPIPythonAWS LambdaAPI GatewayStep FunctionsDynamoDBS3PrefectSQLMongoDBREST APIsWorkflow OrchestrationAnalyticsExpress.js

About

I’m a Senior Software Engineer with 7+ years of experience building scalable, high-performance backend systems using Node.js, Python, MongoDB and cloud-native architectures. I specialize in designing resilient microservices, optimizing performance, and delivering clean, maintainable engineering solutions that directly impact business outcomes. At LiftOff, I’ve spent 5+ years developing robust e-commerce and platform services, improving system reliability, and driving architectural improvements across distributed systems. My work consistently focuses on efficiency, scalability, and automation, backed by hands-on experience with Google Cloud Run, container orchestration, CI/CD, and OpenAI API integrations. I’m passionate about solving complex technical problems, mentoring teams, and building systems that scale gracefully. With a strong foundation in computer science and a Master’s degree in Computer Applications, I bring both depth and curiosity to every project I take on. Core strengths: Backend Engineering (Node.js, Python, FastAPI, Express JS) Distributed Systems & Microservices Cloud Platforms (GCP, AWS), Google Cloud Run Databases (MongoDB, SQL) API design, performance tuning, automation OpenAI API & AI-powered integrations

Experience

8 yrs 5 mos

Total Experience

4 yrs 2 mos

Average Tenure

6 yrs 2 mos

Current Experience

Liftoff llc

Software Engineer

Mar 2020 – Present · 6 yrs 2 mos · Greater Bengaluru Area · Hybrid

Senior backend engineer working across workflow orchestration, serverless architectures, ETL pipelines, and backend API development using Python (FastAPI), Node.js, AWS and Prefect. Contributed to major platform upgrades, performance improvements, and internal tool development while mentoring junior developers.
Key Achievements & Contributions:
Led the migration from Prefect 1.0 to 2.0, improving workflow orchestration performance by 40% and reducing development overhead; collaborated closely with cross-functional teams to ensure a smooth rollout.
Designed and implemented chart computation logic for a web application using FastAPI, improving analytics capabilities for internal teams.
Built a robust REST API layer to integrate the web app with Prefect workflows, enabling dynamic task orchestration and monitoring.
Worked extensively with the Serverless Framework to develop and deploy AWS Lambda functions, improving scalability and reducing operational overhead.
Designed and developed a complete admin reporting system using Node.js with custom SQL queries to fetch and aggregate sales order data.
Contributed to building a full ETL pipeline using Node.js + AWS Lambda, API Gateway, Step Functions, DynamoDB, and S3, enhancing data processing reliability and throughput.
Developed backend APIs for payment integrations, dashboard reporting, and internal tools using Hapi.js.
Implemented authorization and access-control modules for backend systems in both Node.js and FastAPI applications.
Regularly resolved critical bugs, upgraded core modules, and contributed to major feature enhancements.
Tech Stack:
Node.js, FastAPI, Python, Hapi.js, AWS Lambda, API Gateway, Step Functions, DynamoDB, S3, Serverless Framework, Prefect, SQL, MongoDB, REST APIs

Node.jsFastAPIPythonAWS LambdaAPI GatewayStep Functions+8

Ace turtle services ltd

Associate Software Engineer

Nov 2017 – Feb 2020 · 2 yrs 3 mos · Bengaluru, Karnataka, India

Summary:
Started as a fresher and quickly grew into a core backend contributor, building internal tools, APIs, and service modules from scratch using Node.js, Express.js, GraphQL, and MongoDB (Mongoose).
Key Contributions:
Designed and developed a complete backend application used internally by business and engineering teams for managing schemas, attributes, and configuration metadata.
Built the Last Mile Partner Service Module using GraphQL, enabling partner integrations and improving operational efficiency.
Implemented authorization and access control layers, improving application security and internal data governance.
Developed and maintained REST APIs, routing logic, and Mongoose schemas, contributing to the evolution of the backend architecture.
Tech Stack:
Node.js, Express.js, GraphQL, MongoDB, Mongoose, REST APIs, JavaScript