We are looking for an experienced Principal Software Engineer with deep expertise in Ruby to lead the technical direction of our platform and drive the development of complex, scalable, and high-performance systems.
In this role, you will define architectural strategy, make key engineering decisions, mentor the team, and ensure the highest standards of code quality and engineering excellence.
The ideal candidate combines strong hands-on skills with strategic thinking, product awareness, and a passion for building robust, efficient, and future-proof solutions.
Job Description- Architect and implement scalable, high-performance software solutions using Ruby and Ruby on Rails
- Lead the design and development of new features and products, ensuring code quality and best practices
- Collaborate with cross-functional teams to define and implement technical strategies
- Mentor and guide junior developers, fostering a culture of continuous learning and improvement
- Conduct code reviews and provide constructive feedback to team members
- Optimize existing systems for improved performance and scalability
- Contribute to the evolution of our technology stack and development processes
- Participate in technical decision-making and help set the direction for our engineering efforts
- Stay up-to-date with emerging technologies and industry trends, recommending innovations when appropriate
- Troubleshoot and resolve complex technical issues in production environments
- Expert-level proficiency in Ruby and strong knowledge of Ruby on Rails framework
- 8-10+ years of software development experience, with a proven track record of leading complex projects
- Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent experience)
- Strong experience with web development technologies (HTML, CSS, JavaScript)
- Proficiency in database systems (e.g., PostgreSQL, MySQL) and version control systems (e.g., Git)
- Deep understanding of software design patterns, principles, and best practices
- Experience with test-driven development (TDD) and automated testing frameworks
- Knowledge of scalable and distributed systems architecture
- Familiarity with cloud computing platforms (e.g., AWS, Azure, GCP)
- Strong problem-solving skills and ability to architect complex software solutions
- Excellent communication and leadership abilities, with experience mentoring junior developers
- Experience working with Agile methodologies
- Ability to balance technical leadership with hands-on coding
- Passion for staying current with emerging technologies and industry trends
Top Skills
What We Do
Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs.
Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts.
Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters
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