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Location

Poland

Rate

$35  / per hour

Years of experience

9+

About

I am an experienced programmer with a strong background in backend development and team management. Over the years, I have successfully implemented and managed complex projects that significantly improved the performance and reliability of platforms like Limango, where I played a crucial role in introducing modern technologies and refactoring legacy systems. Starting my career as a Junior Developer at Solvena Management Systems, I quickly advanced by independently learning and rebuilding a municipal waste management system using newer technologies. My journey at Limango began with junior roles and led to becoming a Lead Backend Developer, where I managed a team, developed services in Golang, and migrated infrastructure to AWS, among other achievements. Currently, as a Senior Golang Developer at SpotOn Poland, I am part of an international team focusing on system integrations, primarily working on integrating with Oracle and developing APIs for external user management. My work involves maintaining and refactoring existing systems, implementing CI/CD pipelines, and ensuring efficient deployment on AWS infrastructure. My technical expertise includes a wide range of tools and technologies such as Golang, AWS services, Docker, Kubernetes, and React.js. I am always eager to tackle new challenges and continuously develop my skills to stay at the forefront of the industry.

Tech Stack

Go Lang, Android, AWS, C#, Docker, Elasticsearch, Git, Kotlin, Kubernetes, Linux, MongoDB, MySQL, OOP, PHP, React.js, Redis, Terraform

Experience

  • At Limango, managed a team of backend developers, overseeing the development of services and ensuring successful project delivery.
  • Created and maintained various services using Golang, including tools for communication with fiscal printers and automatic translation of product descriptions.
  • Led the migration of server infrastructure to AWS, utilizing services like AWS Lambda, S3, DynamoDB, and Elastic Beanstalk to enhance system performance and scalability.
  • Developed and maintained CI/CD pipelines using Gitlab, Docker, Kubernetes, and Helmfile, ensuring smooth deployment and continuous integration processes.
  • At SpotOn, worked on the integration of systems with Oracle, managing and maintaining these integrations as part of the international integrations team.
  • Implemented and maintained the User API at SpotOn, deployed on AWS Lambda behind an API Gateway, allowing external partners to manage user data.
  • Played a key role in refactoring legacy systems at Limango, introducing the MVC design pattern and transitioning from Memcache to Redis for improved performance.

Employment history

Senior Golang Developer, SpotOn Poland December 2021 - Present
  • Part of the integrations team, focusing on Oracle integration and maintaining existing systems.
  • Developed and maintained the User API for external user management, deployed on AWS Lambda with API Gateway.
  • Worked on the Menu API to manage and provide offers for external partners.
  • Implemented CI/CD and APM for various projects using Codefresh, Kubernetes, Helmfile, and Datadog.
  • Collaborated with an international team, working closely with both Polish and American colleagues.
Lead Backend Developer, Limango November 2014 - December 2021
  • Started as Junior Developer and advanced to Lead Backend Developer by introducing MVC design patterns and modernizing backend systems.
  • Developed and managed backend services using Golang, including communication tools and automated translation services.
  • Led the migration of server infrastructure to AWS, enhancing system performance and scalability.
  • Managed a team of backend developers, overseeing project delivery and team development.
  • Implemented and maintained CI/CD pipelines using Gitlab, Docker, and Kubernetes.
  • Participated in an international team to create a new shop system for Limango, focusing on backend development using Golang.
Junior Developer, Solvena Management Systems February 2014 - November 2017
  • Maintained and developed a municipal waste management system using PHP 5.6 and Symfony 1.x framework.
  • Rebuilt the system with newer technologies to improve performance and reliability.
  • Developed a Windows Mobile application for real-time monitoring of waste collection using GPS and barcode scanning.
  • Worked independently to learn and implement new technologies without direct supervision.
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