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John umer User

@johnumeruser

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Senior software engineer building scalable backend systems and AI-enabled microservices on cloud-native stacks.

United States

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What I'm looking for

I’m looking to lead cloud-native backend and AI integrations—designing reliable microservices, improving performance and uptime at scale, and shipping secure REST APIs with strong engineering practices and real ownership.

I’m a Senior Software Engineer with 9+ years of experience building scalable backend systems, cloud-native applications, and microservices architectures. I focus on designing RESTful APIs, distributed systems, and high-performance services with a strong emphasis on reliability, scalability, and security.

In recent roles, I designed and implemented microservices-based backend systems using Node.js and Django, improving scalability by 50%. I built RESTful APIs with 99.99% uptime, optimized PostgreSQL/MongoDB queries to reduce latency by 70%, and delivered CI/CD improvements by 85% with GitHub Actions and Jenkins.

I’ve also led large-scale distributed systems on GCP, processing big datasets with BigQuery and Apache Spark to reduce processing time by 60%, and migrating to serverless architectures to improve scalability and cut costs by 30%. I integrate AI in production using OpenAI API, LangChain, Hugging Face, Transformers, and vector databases, pairing strong engineering practices with end-to-end ownership from design through deployment and monitoring.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Istream Solution

Jan 2023 - Present (3 years 4 months)

Designed and implemented microservices-based backend systems with Node.js and Django, improving scalability by 50%. Built REST APIs with 99.99% uptime, optimized PostgreSQL/MongoDB queries to cut latency by 70%, and delivered CI/CD improvements achieving 85% faster deployments.

Django Microservices REST APIs Docker Kubernetes PostgreSQL Apache Kafka CI CD

Full Stack Engineer

Google

Jan 2021 - Jan 2023 (2 years)

Developed large-scale distributed backend services on GCP and built REST APIs using Node.js, Java, Go, and Python. Processed big datasets with BigQuery/Spark to reduce processing time by 60%, led migration to serverless to improve scalability and reduce costs by 30%, and increased frontend load speed by 35%.

GCP Java Go Python REST APIs BigQuery Apache Spark Terraform

Software Engineer

ECFMG

Jan 2018 - Jan 2021 (3 years)

Built full-stack applications using Django, FastAPI, and React to support 50K+ concurrent users. Implemented Redis/CDN caching to reduce latency from 800ms to 200ms, delivered secure OAuth2/RBAC authentication, and improved system performance and reliability through proactive monitoring and optimization.