Cristian Miron

Ruby on Rails Engineer

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Cluj-Napoca, Romania

Experience

Jul 2022 - Present
3 years 7 months

Ruby on Rails Engineer

Full Health Medical

  • Developed and refined healthcare-focused features using Ruby and Ruby on Rails, improving medical product accessibility workflows used by more than 23 internal and external stakeholders.
  • Refactored legacy modules with heavy conditional logic by applying object-oriented patterns in Ruby, reducing code complexity by approximately 31 percent while improving long-term maintainability.
  • Led UI modernization efforts using Bootstrap and View Components, resulting in a 36 percent decrease in reported usability issues across 4 major application sections.
  • Maintained over 92 percent automated test coverage with RSpec, proactively identifying test gaps and preventing regressions across monthly release cycles.
  • Reviewed pull requests with a strong focus on code smells, anti-patterns, and test quality, contributing to faster onboarding of 2 new engineers into the codebase.
  • Integrated test execution into CI pipelines using GitHub Actions and Docker, reducing failed production deployments by 27 percent over a 12-month period.
  • Collaborated with product and QA teams to document defects and technical debt, helping prioritize remediation work during 6 consecutive sprint planning cycles.
  • Acted as a technical reference point for Ruby best practices, mentoring junior developers on idiomatic Ruby and effective debugging techniques.
Mar 2021 - Jul 2022
1 year 5 months

Ruby on Rails Full Stack Developer

Pentalog

  • Owned end-to-end development using Ruby on Rails as the sole engineer on the project, handling development, QA, deployment, and production support independently.
  • Designed and integrated multiple external content APIs using Ruby and REST, enabling reliable delivery of media assets to over 40 geographically distributed digital screens.
  • Processed and validated diverse data formats including XML, RSS, MP4, and JPG, implementing custom parsers that reduced malformed payload incidents by 34 percent.
  • Implemented automated regression tests with RSpec, ensuring stable releases despite handling an average of 18 production incidents per quarter.
  • Maintained Linux-based servers and CI workflows using Git and shell tooling, improving deployment consistency across staging and production environments.
  • Collaborated directly with non-technical clients to clarify requirements and adjust priorities, successfully meeting 95 percent of delivery deadlines across 7 major milestones.
  • Documented system behavior, edge cases, and known limitations, creating internal references that reduced future support investigation time by 29 percent.
  • Balanced rapid feature delivery with long-term code quality, performing incremental refactoring to prevent technical debt accumulation.
Sep 2020 - Jun 2022
1 year 10 months
Cluj-Napoca, Romania

Lab Teaching Assistant

Technical University of Cluj-Napoca

  • Guided over 60 students through practical assignments in web development and UI design, emphasizing structured problem-solving and clean code principles.
  • Reviewed student projects with a focus on architecture, testing basics, and debugging strategies, improving overall lab completion rates by 22 percent.
  • Worked closely with faculty members to modernize lab materials, incorporating contemporary development tools and realistic project constraints.
Aug 2019 - Mar 2021
1 year 8 months

Ruby on Rails Full Stack Developer

ArtSoft Consult

  • Developed and maintained production-grade applications using Ruby on Rails, contributing to API-driven features consumed by both web and mobile clients.
  • Collaborated within a distributed Agile team of more than 40 members, participating in sprint planning, backlog refinement, and retrospective sessions.
  • Built hybrid mobile applications using Cordova while ensuring backend compatibility and consistent data synchronization.
  • Used GitHub, Jira, and Confluence for coordinated delivery, reducing merge conflicts and improving sprint predictability over successive releases.
Jul 2019 - Aug 2019
2 months

Internship – Ruby on Rails Full Stack Developer

  • Accelerated onboarding into professional Ruby on Rails workflows, contributing meaningful code within the first 3 weeks of the internship.
  • Gained hands-on exposure to collaborative development practices, version control, and structured task execution in a production environment.
Jul 2018 - Aug 2018
2 months

Java Software Developer

iQuest Group

  • Developed a three-tier application using Java and Spring Boot, integrating multiple external data sources into a unified SQL-backed system.
  • Implemented DAO patterns and API response parsing logic, ensuring reliable data filtering and presentation for downstream consumers.

Summary

Results-driven Software Engineer with over 5 years of hands-on experience building, testing, and refining Ruby-based systems across healthcare, media distribution, and SaaS platforms. Strong background in Ruby on Rails development with a consistent focus on code quality, test coverage, and long-term maintainability. Experienced in reviewing complex codebases, identifying design flaws, and improving reliability through structured refactoring and automated testing. Actively contributed to projects involving data processing, API integrations, and CI-driven delivery pipelines in distributed teams. Comfortable collaborating with product, QA, and research-focused stakeholders on experimental and evolving requirements. Well-suited for AI-focused environments that demand precision, adaptability, and deep understanding of real-world software behavior.

Skills

  • Backend - Ruby, Ruby On Rails, Object-oriented Design, Metaprogramming, Rest Apis, Background Jobs, Service Objects, Mvc Architecture, Api Integrations
  • Testing & Quality - Rspec, Minitest, Test Coverage Analysis, Code Review, Refactoring, Debugging, Profiling, Ci Test Pipelines, Defect Documentation
  • Devops & Tooling - Docker, Github Actions, Gitlab Ci, Jenkins, Linux Cli, Shell Scripting, Automated Deployments, Environment Configuration
  • Databases - Postgresql, Mysql, Sql Optimization, Schema Design, Data Migrations, Query Profiling, Indexing Strategies
  • Frontend & Ui - Html, Css, Bootstrap, View Components, Javascript, Ui Refactoring, Accessibility Improvements
  • Collaboration & Process - Git, Agile Scrum, Jira, Confluence, Technical Documentation, Remote Collaboration, Cross-team Reviews

Languages

Romanian
Native
English
Advanced

Education

Oct 2020 - Jun 2022

Technical University of Cluj-Napoca

MS in Computer Software Engineering · Computer Software Engineering · Cluj-Napoca, Romania

Oct 2016 - Jun 2020

Technical University of Cluj-Napoca

BS in Computer Science · Computer Science · Cluj-Napoca, Romania

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