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Senior Software Development Engineer (Ruby)



Software Engineering
Prague, Czechia
Posted on Friday, May 24, 2024

Our Purpose

We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Title and Summary

Senior Software Development Engineer (Ruby) Overview

SessionM, a Mastercard Company, is a customer engagement platform empowering global brands to forge stronger and more profitable customer relationships. We partner with brands to drive marketing transformation through innovative technology and services. We are headquartered in Boston with offices around the world including Prague.

We are seeking a Senior Ruby Developer who will be a crucial part of our software team. The selected candidate will have to write scalable, robust, and easy-to-maintain code, and will be required to translate software requirements into high-performance products. You will also be actively involved in researching new technologies/tools that can be incorporated to improve the current system.

Job duties and responsibilities:

- Develop secure, well-architected, scalable and performant backend applications in Ruby.
- Translate software requirements into stable, running, high-performance software.
- Play a key role in architectural and design decisions.
- Implement best practices for maintainable quality code.
- Optimize existing codes to improve performance and efficiency.
- Work with the team to identify and prioritize features and functionality.
- Collaborate with other developers, product managers, and stakeholders to ensure high-quality and timely delivery of software.
- Write clean and maintainable code with strong unit testing and debugging skills.
- Continuously monitor and optimize the performance and reliability.
- Participate in code reviews, testing, documentation, and knowledge sharing activities.

Ideal Candidate Qualifications:

- 4+ years software development/software engineering experience.
- Strong knowledge of Ruby programming language, paradigms, constructs, and idioms.
- Experience and strong understanding of Ruby on Rails framework.
- Experience working with or familiar with background job frameworks such as sidekiq.
- Experience working with or familiar with DB/ Caching (MySQL, Cassandra, Redis, or similar tools).
- Accustomed with modern version control systems such as Git.
- Experience in Deployments to Cloud services such as AWS/Azure/GCP.
- Experience in Integrations using Pipelines.
- Comfortable operating in Linux environment.
- Ability to learn new languages and technologies as necessary.
- Excellent written and oral communication skills.
- Strong analytical and problem-solving skills.
- Master’s or bachelor's degree in computer science, information technology, software engineering, or related technical field.


Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

  • Abide by Mastercard’s security policies and practices;

  • Ensure the confidentiality and integrity of the information being accessed;

  • Report any suspected information security violation or breach, and

  • Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.