Dima Sumaroka
New York,USA
Summary
Experienced Software Engineer with expertise in building low-latency, scalable distributed systems.
Overview
13
13
years of professional experience
Work History
Software Development Engineer
Amazon
New York, New York
10.2022 - Current
- Shipped S3 Access Points for FSx, exposing file system data via S3 APIs, enabling scalable data access for a broad set of workloads.
- Designed S3 Access Points for FSx to meet high availability and low-latency demands under heavy throughput, improving data accessibility, and resilience.
- Optimized network topology by removing NAT gateways and NLBs, adopting an Envoy edge proxy to reduce hops, increase throughput, and lower costs.
- Profiled hot paths, reduced latency, and resource usage, which led to performance improvements in CPU and memory utilization across services.
- Extended AWS FIS (fault injection) tooling and delivered S3 replication fault injection to strengthen release safety and recovery testing.
- Mentored engineers through code and document reviews, making sure everyone on the team strives for high standards in code quality, testing, and maintainability.
- Participated in on-call rotations, authored post-incident reviews to improve alarms, dashboards, and runbooks for faster incident resolution.
Software Engineering Manager
IQVIA
Philadelphia, PA
01.2021 - 10.2022
- Managed engineering teams that built scalable, data-driven analytics platforms, which used AI and ML models for clinical trial design, optimization, and execution.
- Led engineering teams to deliver APIs and data pipelines that advanced Human Data Science mission of integrating healthcare domain knowledge with cutting-edge data science to enhance patient outcomes.
- Partnered with software engineers, data scientists, and clinical experts to help translate research insights into production-grade distributed systems.
- Mentored engineers and data scientists, fostering collaboration between software development, data scientists, and applied machine learning teams.
- Drove system reliability initiatives, ensuring compliance (i.e., HIPAA), reproducibility, and security across sensitive medical datasets.
Senior Software Engineer
Paradigm
New York, NY
04.2021 - 03.2022
- Led design and implementation of multiple microservices, including JWT-based authentication, and improved Kubernetes infrastructure and test automation to support reliable deployments.
- Developed authentication services and integrated JWT-based auth across microservices, enhancing security posture and access controls.
- Enhanced Kubernetes infrastructure to support new microservices and improved test automation to accelerate release cadence.
Senior Software Engineer
Comcast
Philadelphia, PA
05.2017 - 02.2021
- Designed and implemented internal tooling to optimize OpenStack compute capacity management, improving resource utilization, and operational efficiency.
- Developed NLP/ML-driven chatbot automation for incident response, reducing manual intervention, and speeding resolution.
- Built monitoring and tooling to validate content recording and playback systems, improving reliability and visibility.
- Enhanced channel mapping tooling to reduce upload times and errors.
Software Engineer
SkySwitch (CoreDial)
Philadelphia, PA
05.2015 - 05.2017
- Delivered full-stack features using Angular, PHP, and Python; designed and documented REST APIs, and refactored legacy code for readability, testability, and performance.
- Integrated a third-party tax platform into the CoreDial SaaS product, delivering seamless billing flows.
- Architected an asynchronous pub-sub agent between the web app and a message broker to enable decoupled processing and scalable data workflows.
Software Engineer
Zivtech
Philadelphia, PA
08.2014 - 05.2015
- Delivered Drupal-based web projects for higher-ed and nonprofit clients, and led a cross-functional team to build a cross-platform mobile app that consumes Drupal REST endpoints.
- Partnered with infrastructure teams to automate internal workflows using Node.js, PHP, and Puppet, driving deployment efficiency.
Software Engineer
Wodify
Philadelphia, PA
01.2014 - 08.2014
- Shipped features and fixes across customer-facing .NET/C# applications.
- Added in app payment support to the Wodify iOS app with payment hardware integrations.
Software Engineer & Partner
Green Monkey Dev
Philadelphia, PA
02.2013 - 12.2013
- Built full-stack web apps with Ruby on Rails and delivered an e-commerce platform; defined product roadmaps and authored acceptance criteria and user stories.
- Provisioned and operated AWS infrastructure (EC2, Route 53, Elastic Beanstalk) to deploy and run applications.
Jr. Software Quality Assurance Analyst
Artisan Mobile
Philadelphia, PA
01.2013 - 03.2013
- Built prototype iOS apps to validate APIs and UI flows; authored unit tests and end-to-end tests; created mock analytics emitters to simulate traffic for testing.
- Fixed defects in Rails backend and iOS codebases, improving stability and test coverage.
Education
Computer Science -
Rutgers University
Camden, NJSkills
- Java
- Kotlin
- Go
- Python
- Distributed Systems
- System Design
- Kafka
- RabbitMQ
- SQL
- NoSQL
- AWS
- Kubernetes
- Docker
- Observability
- Chaos Engineering
- Performance Tuning
- Testing
- Security & Compliance
Timeline
Software Development Engineer
Amazon
10.2022 - Current
Senior Software Engineer
Paradigm
04.2021 - 03.2022
Software Engineering Manager
IQVIA
01.2021 - 10.2022
Senior Software Engineer
Comcast
05.2017 - 02.2021
Software Engineer
SkySwitch (CoreDial)
05.2015 - 05.2017
Software Engineer
Zivtech
08.2014 - 05.2015
Software Engineer
Wodify
01.2014 - 08.2014
Software Engineer & Partner
Green Monkey Dev
02.2013 - 12.2013
Jr. Software Quality Assurance Analyst
Artisan Mobile
01.2013 - 03.2013
Computer Science -
Rutgers University