Vitalijus D. - Full Stack Rails Engineer

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Vilnius, Lithuania

Experience

Aug 2024 - Sep 2025

1 year 2 months

Full Stack Rails Engineer

SmartRoute.io

Developed and maintained two Ruby on Rails applications for an IoT telematics solution.
Deployed one system on AWS acting as a TCP server, communicating with FMT100 telematics modules, decoding data, and exposing it via a GraphQL API.
Deployed a second app on Heroku providing an API with a frontend interface to store and manage data in PostgreSQL.
Implemented background processing with Sidekiq and Redis.
Ensured code quality with RSpec.

Sep 2023 - Aug 2024

1 year

Software Engineer

Auto Trader UK

Created, developed and maintained microservices architecture using Ruby on Rails and Node.js.
Built APIs using GraphQL queries to accelerate development and used ElasticSearch that’s heavily relied on Sedikiq/Redis to enhance search experience.
Designed each microservice with a well-defined purpose handling a single business capability, with its own database and API.
Enabled independent development, deployment and scaling of services, allowing parallel work across teams.
Delivered a robust, scalable and secure infrastructure.

Mar 2020 - Aug 2023

3 years 6 months

Backend Engineer

Autorama UK Ltd.

Built multiple Ruby on Rails applications for internal and external use within a microservices infrastructure.
Created a gateway app using Apollo Federation to combine multiple APIs into a single federated GraphQL API, allowing clients to make a single request coordinating multiple API calls.
Deployed each application to AWS or Heroku with its own database and API.
Scheduled regular database updates using Sidekiq and reindexed data with Elasticsearch.
Secured APIs using AWS Cognito and JWT.

Summary

Experienced Full Stack Developer with a passion for building clean, efficient, and scalable applications.

Strong expertise in backend development, microservices architecture, and GraphQL APIs. Adept at ensuring high code quality, optimizing performance, and implementing test-driven development (TDD) practices.

Committed to delivering maintainable, bug-free applications and improving system architecture.