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Mubashir Kamran

@mubashirkamran

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Senior Ruby on Rails developer specializing in backend systems and API integrations.

Germany

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What I'm looking for

I seek backend-focused roles where I can build reliable APIs, improve legacy systems, work with streaming/data tools, and contribute to scalable production deployments in collaborative teams.

I am a senior Ruby on Rails developer with a Master's in Computer Science from the University of Passau and years of experience building and maintaining backend systems for web and healthcare applications.

I have led maintenance and improvements of legacy systems, developed API integrations for AI-powered services, and configured headless CMS solutions to support dynamic user reports.

My background includes designing and rewriting dashboards, implementing offerwall pipelines, and working with streaming and analytics technologies such as Apache Kafka, Druid, and Grafana across AWS environments.

I prioritize clean architecture, reliable testing with RSpec, and production-ready deployments using Docker and Kubernetes, and I bring practical experience with databases, search (Elasticsearch), and background processing (Sidekiq).

Experience

Work history, roles, and key accomplishments

Software Engineer

Cerascreen GmbH

Jan 2023 - Dec 2024 (1 year 11 months)

Maintained and improved a legacy healthcare system, developed API integrations for AI-powered services using Ruby on Rails, and configured Sanity CMS for user result report content.

Ruby Ruby on Rails API Integration Sanity CMS Test Automation Docker AWS

Backend Developer

Propstack GmbH

Aug 2022 - Nov 2022 (3 months)

Developed and maintained a web CRM for real estate companies, implementing core features using Ruby on Rails and Elasticsearch and optimizing background jobs with Sidekiq.

Ruby Ruby on Rails Elasticsearch Sidekiq PostgreSQL REST APIs Git

Senior Backend Engineer

Fyber

Nov 2019 - Aug 2022 (2 years 9 months)

Built and refactored product dashboards and developed/maintained the offerwall pipeline using Ruby on Rails, GraphQL and Kafka, improving observability with Grafana and Druid.

Ruby Ruby on Rails GraphQL Apache Kafka Grafana Druid RSpec AWS

Software Engineer

Arkhitech

Aug 2016 - Feb 2018 (1 year 6 months)

Delivered web applications for international clients using Ruby on Rails, applying MVC architecture and community best practices across multiple projects.

Ruby Ruby on Rails MVC PostgreSQL MySQL Git Agile Development

Junior Software Engineer

Arkhitech

Dec 2014 - Nov 2015 (11 months)

Developed Rails applications for client projects, focusing on robust MVC implementations and reusable components following best practices.

Ruby Ruby on Rails MVC MySQL Git HTML CSS JavaScript Debugging

Software Developer

Arbisoft

Jun 2014 - Dec 2014 (6 months)

Developed web crawlers to extract public website data and stored results in schema-less databases, focusing on reliable data collection and processing pipelines.

Python Scrapy MongoDB Data Processing SQLAlchemy Linux Version Control

Education

Degrees, certifications, and relevant coursework

University of Passau

Master of Science, Information and Communication Systems

2018 - 2022

Completed a Master in Computer Science with focus on Information and Communication Systems from April 2018 to March 2022.

National University of Sciences and Technology (NUST)

Bachelor of Science, Information Technology

2010 - 2014

Completed a Bachelor in Information Technology with majors in Software Engineering, Computer Networks, Databases, Network Security, and Programming from June 2010 to June 2014.