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Senior Ruby on Rails + JS Engineer (Backend) IRC177653

Job: IRC177653
Location: Poland - Krakow
Experience: 5-10 years
Function: Engineering
Work Model: Remote


Our client delivers personalized experiences, cross-channel messaging and loyalty programs that add value to customer relationships. The product enables marketers to rapidly scale and meet the demands of the modern consumer. Marketers can easily deploy targeted and triggered cross-channel campaigns, compile data from multiple sources, and strategically promote desired customer behaviors – effectively increasing revenue and enhancing customer experiences.



  • Bachelor’s degree in Computer Science or similar field 

  • 6+ years experience in software engineering 

  • 4+ Ruby on Rails proficiency in a scaled production environment

  • Advanced relational DB experience with MySQL (or similar RDBMS) 

  • Experience with NoSQL solutions like Redis 

  • Experience in building RESTful APIs 

  • Experience with any JavaScript libraries (JQuery, React, Vue, Angular) 

  • Familiarity with code versioning tools such as Git 

  • Experience in unit testing (RSpec)

  • Knowledge of software development methodology, patterns and best practices 

  • Experience in driving projects, reviewing code and mentoring junior developers

  • Have gone through performance challenges of a production application 

  • Have an understanding of scalability bottlenecks in Rails applications

  • Experience in messaging queues, background jobs and/or event streaming framework (Kafka/Resque/Sidekiq)

  • English – intermediate. Direct communication with the client.


Would be a plus:


  • Experience with other programming languages like Java and/or Groovy 

  • Familiarity with CI/CD pipelines, AWS, and cloud infra e.g. Docker and Kubernetes

  • Familiarity with Hadoop components such as HBase, Spark, Kafka, Hive, Storm 

  • Solid understanding of distributed systems, data stores, data modeling, indexing and associated trade-offs 

  • Strong industry experience in architecture and development of scalable production quality backend systems


Job Responsibilities:

The Engineer will work on an industry-leading Loyalty Program management solution that processes and analyzes billions of transactions per day on an Apache Hadoop, MySQL and Ruby on Rails platform hosted on AWS. The platform allows marketers with best-in-class tools to design, create, and execute, data-driven promotions, offers, and real time interactions that help engage and build lifelong, profitable, loyal customers.

  • Translate business requirements into specifications and detailed designs 

  • Develop, build, test, and support customer’s Loyalty server components, such as APIs, database and business logic, and web-based UIs 

  • Ensure unit and automated tests are in place 

  • Integrate with third-party solutions and APIs 

  • Perform benchmarks and tuning for high throughput

  • Deliver technical documentation for customers and partners 

  • Work closely with PM, QA, SRE, and customer success teams

  • Participate in regular code reviews, often in a mentorship role

  • Make recommendations to refine and improve our engineering practices

What We Offer

Exciting Projects: With clients across all industries and sectors, we offer an opportunity to work on market-defining products using the latest technologies.

Collaborative Environment: You can expand your skills by collaborating with a diverse team of highly talented people in an open, laidback environment — or even abroad in one of our global centers or client facilities!

Work-Life Balance: GlobalLogic prioritizes work-life balance, which is why we offer flexible work schedules.

Professional Development: We develop paths suited to your individual talents through international knowledge exchanges and professional certification opportunities.

Excellent Benefits: We provide our employees with private medical care, sports facilities cards, group life insurance, travel insurance, relocation package, food subsidies and cultural activities.

Fun Perks: We want you to feel comfortable in your work, which is why we create good working environment with relax zones, host social and teambuilding activities and stock our kitchen with delicious teas and coffees!

About GlobalLogic

GlobalLogic is a leader in digital engineering. We help brands across the globe design and build innovative products, platforms, and digital experiences for the modern world. By integrating experience design, complex engineering, and data expertise—we help our clients imagine what’s possible, and accelerate their transition into tomorrow’s digital businesses. Headquartered in Silicon Valley, GlobalLogic operates design studios and engineering centers around the world, extending our deep expertise to customers in the automotive, communications, financial services, healthcare and life sciences, manufacturing, media and entertainment, semiconductor, and technology industries. GlobalLogic is a Hitachi Group Company operating under Hitachi, Ltd. (TSE: 6501) which contributes to a sustainable society with a higher quality of life by driving innovation through data and technology as the Social Innovation Business.

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