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I'm Dean Kevin, a Senior Software Engineer based in Warsaw, Poland. I have 8+ years of experience designing, developing, and maintaining scalable, high-performance software solutions. I'm known for a thoughtful, collaborative approach, strong problem-solving skills, and a commitment to clean, maintainable code. I mentor engineers, lead technical initiatives, and work cross-functionally to deliver user-focused products in fast-paced environments.…I'm Dean Kevin, a Senior Software Engineer based in Warsaw, Poland. I have 8+ years of experience designing, developing, and maintaining scalable, high-performance software solutions. I'm known for a thoughtful, collaborative approach, strong problem-solving skills, and a commitment to clean, maintainable code. I mentor engineers, lead technical initiatives, and work cross-functionally to deliver user-focused products in fast-paced environments.

Dean Kevin

Full Stack Developer, Back-End Developer, Web Developer, +2

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I'm Dean Kevin, a Senior Software Engineer based in Warsaw, Poland. I have 8+ years of experience designing, developing, and maintaining scalable, high-performance software solutions. I'm known for a thoughtful, collaborative approach, strong problem-solving skills, and a commitment to clean, maintainable code. I mentor engineers, lead technical initiatives, and work cross-functionally to deliver user-focused products in fast-paced environments.…I'm Dean Kevin, a Senior Software Engineer based in Warsaw, Poland. I have 8+ years of experience designing, developing, and maintaining scalable, high-performance software solutions. I'm known for a thoughtful, collaborative approach, strong problem-solving skills, and a commitment to clean, maintainable code. I mentor engineers, lead technical initiatives, and work cross-functionally to deliver user-focused products in fast-paced environments.

Available to hire

I’m Dean Kevin, a Senior Software Engineer based in Warsaw, Poland. I have 8+ years of experience designing, developing, and maintaining scalable, high-performance software solutions.

I’m known for a thoughtful, collaborative approach, strong problem-solving skills, and a commitment to clean, maintainable code. I mentor engineers, lead technical initiatives, and work cross-functionally to deliver user-focused products in fast-paced environments.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Work Experience

Senior Software Engineer at Deloitte

January 1, 2022 - Present

Designed and developed high-performance backend services in Node.js, focusing on payment processing, risk evaluation, and fraud detection at scale. Built event-driven microservices leveraging Kafka and AWS-managed streaming to process millions of transactions with low latency. Exposed GraphQL and REST APIs consumed by React and Next.js frontends, emphasizing type safety, observability, and backward compatibility. Deployed containerized Go services on AWS ECS (Fargate) with blue/green and canary strategies to achieve zero-downtime releases. Implemented centralized configuration and feature flag systems using Redis and pub/sub patterns for safe experimentation. Developed internal platforms and dashboards using React, Next.js, TypeScript, optimizing data fetching with GraphQL and SSR. Improved CI/CD pipelines using Terraform and GitHub Actions, integrating automated testing, security scanning, and release validation. Led backend modernization initiatives, mentoring engineers and contribut

Senior Software Engineer at Morgan Stanley

January 1, 2020 - January 1, 2022

Developed low-latency backend services for capital markets applications with a strong focus on reliability, concurrency, and data consistency. Designed and maintained API-driven systems supporting real-time and batch workflows for trading and reporting platforms. Built and integrated APIs with front-end and internal tools, enabling seamless data access and collaboration. Implemented scalable services and pipelines to support mission-critical financial workflows.

Senior Software Engineer at Northbridge Consulting

January 1, 2018 - January 1, 2020

Built and maintained backend services supporting marketing automation and CRM workflows. Developed full-stack web applications using React and Node-based APIs. Integrated third-party marketing platforms and external APIs into unified internal systems. Supported cloud deployments and CI/CD pipelines, ensuring reliable delivery across environments. Partnered closely with consultants and stakeholders to translate business requirements into scalable technical solutions.

Junior Software Engineer at Vistula Tech Services

January 1, 2017 - January 1, 2018

Built React and React Native apps with TypeScript, focusing on performance, maintainability, and real-time user experiences. Developed a GraphQL gateway to aggregate backend services and simplify frontend data access. Implemented serverless backend components using AWS Lambda and API Gateway. Designed event-driven features using AWS-native messaging and streaming services. Improved frontend performance and delivery pipelines with automated testing and CI/CD best practices. Worked with Agile/Scrum teams, contributing to code reviews, technical design discussions, and production readiness.