Cristian Miron
Ruby on Rails Engineer
Experience
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.
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.
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.
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.
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.
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.
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Healthcare (3.5 years), Information Technology (3 years), and Education (2 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (6.5 years), Product Development (5 years), Operations (1.5 years), and Quality Assurance (1.5 years).
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
Education
Technical University of Cluj-Napoca
MS in Computer Software Engineering · Computer Software Engineering · Cluj-Napoca, Romania
Technical University of Cluj-Napoca
BS in Computer Science · Computer Science · Cluj-Napoca, Romania
Profile
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