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Jonathan Summers

@jonathansummers1

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Senior software engineer specializing in scalable microservices, APIs, and AI-integrated cloud-native systems.

United States

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What I'm looking for

I’m looking for a Senior role where I can architect scalable microservices and high-performance APIs, integrate LLM-powered features responsibly, and keep quality high with TDD—while partnering closely with product and leading teams to ship measurable impact.

I’m a results-driven Senior Software Engineer with 10+ years architecting and delivering scalable backend systems, microservices, and cloud-native applications across telecom, SaaS, fintech, and enterprise environments. My focus is building high-performance RESTful APIs and event-driven architectures, leveraging TypeScript and Python (with a strong Java foundation) to ship reliable products on AWS and Azure.

In recent roles, I’ve delivered 100+ client projects with 95%+ on-time delivery, led cross-functional teams, and reduced manual processing time by ~40% by integrating OpenAI APIs and LangChain into production SaaS. I consistently drive quality through TDD—raising coverage from 42% to 87%—while optimizing databases for measurable outcomes, like sub-100ms p95 latency under concurrency and cutting infrastructure costs by 30% through right-sizing and serverless migration.

Experience

Work history, roles, and key accomplishments

Current

Developer II

Current

Titan Technologies

Jun 2022 - Present (4 years)

Delivered 100+ client projects with 95%+ on-time delivery by architecting TypeScript/Node.js and Python microservices, REST APIs, and AWS/Azure deployments. Built OpenAI/LangChain production features that cut manual processing time by ~40%, and optimized backend performance to achieve sub-100ms p95 latency at high concurrency.

TypeScript Node Python Microservices RESTful APIs AWS ECS Lambda RDS Azure Redis Lang Chain

Software Engineer

Square Peg Technologies

Oct 2021 - Jun 2022 (8 months)

Built microservice-based backend systems for a telecom client with 2M+ active end users, including a real-time network insights platform using Kafka and a React UI. Standardized AWS infrastructure-as-code with Terraform across 5 teams and improved PostgreSQL ingestion performance by 60%.

TypeScript Python Kafka AWS Terraform PostgreSQL Microservices Real Time Systems React

Lead Engineer

Booz Allen Hamilton

Jan 2020 - Oct 2021 (1 year 9 months)

Led a team of 6 engineers delivering secure, scalable backend microservices while meeting strict security and compliance requirements. Enforced REST API standards with OpenAPI 3.0 (40% fewer integration defects) and implemented Kafka-based event pipelines handling 50,000+ events/sec with 99.95% uptime.

Java Microservices RESTful APIs OpenAPI Apache Kafka AWS ECS RDS API Gateway Pytest Junit Mockito

Java Software Engineer

Unisys

Jul 2018 - Jan 2020 (1 year 6 months)

Developed and maintained Java Spring Boot microservices for enterprise financial processing systems with $2B+ in daily batch transactions. Improved API response times by 45% and reduced Oracle nightly batch runtimes from 6 hours to 90 minutes by rewriting slow queries and introducing materialized views.

Java Spring Boot RESTful APIs Oracle Junit Mockito Docker Performance Optimization TDD

Java Developer

Metro Systems, Inc.

Mar 2017 - Jun 2018 (1 year 3 months)

Built Java Spring Boot microservices with Docker to power distributed data pipelines integrating Kafka, Zeppelin, and Spark handling 1M+ records daily. Improved analytics API and database performance by reducing dashboard load times by 50% through MySQL schema tuning and composite indexing.

Java Spring Boot Docker Apache Kafka Apache Spark RESTful APIs MySQL API Versioning Junit Mockito

Java Developer

Bart & Associates

Feb 2014 - Mar 2017 (3 years 1 month)

Developed backend systems using Java, Spring, and MyBatis to deliver RESTful APIs for enterprise applications serving 50,000+ users. Migrated monolith components to modular Spring MVC services (release cycle reduced from 4 weeks to 10 days) and improved endpoint performance by 35% via MyBatis mapping optimization and second-level caching.

Java Spring MVC MyBatis RESTful APIs SQL Tuning Junit JavaScript jQuery