via Workday
$56K - 84K a year
Refactor and modernize a legacy VB6 system to VB.NET or C# while ensuring system integrity and compliance.
At least 2 years of experience in software development, proficiency in VB.NET or C#, and experience with large-scale codebase migration.
At CalcAir, we’ve been helping employee benefits professionals breathe easier for over 50 years—and we’re just getting started. As a trusted name in benefits software and services, we blend deep industry roots with a forward-thinking mindset. CalcAir is part of the Gemini Group, one of the operating groups within Constellation Software Inc. (CSI). Being under CSI—a global leader in vertical market software—means we benefit from the stability, innovation, and long-term investment philosophy of a world-class software organization, while still operating with the agility and culture of a specialized team. Join a team where experience meets innovation, and where your work truly shapes the future of how people work, plan, and retire. If you're ready to make an impact, grow your career, and have a little fun along the way, CalcAir might be the perfect fit. Learn more about us here: ➡️ CalcAir: https://calcairebs.com/ ➡️Gemini: https://www.csigemini.com/ ➡️ Constellation Software: https://www.csisoftware.com/ About the Role: We are seeking an experienced and meticulous Software Engineer to take a lead role in the refactoring and modernization of a mission-critical retirement plan administration system. This legacy application has been developed and maintained over 25 years using Visual Basic 6 (VB6) and is now being migrated to VB.NET or C#. This project is crucial for enhancing the efficiency, security, and scalability of our core systems. You will work closely with business analysts, QA teams, and product stakeholders to understand business logic, redesign and optimize code, and ensure the modernized solution maintains functionality, performance, and regulatory compliance. Key Responsibilities: Analyze, understand, and document a complex VB6 codebase used in qualified retirement plan administration, ensuring thorough documentation to facilitate future maintenance and enhancement. Refactor, rewrite, and optimize legacy code into modern architectures using VB.NET or C#, aiming for improved performance, maintainability, and scalability. Collaborate effectively with cross-functional teams, including business analysts, QA teams, and product stakeholders, to translate business rules into clean, maintainable, and scalable code. Maintain system integrity and data accuracy during the migration process to prevent any disruptions in service. Implement unit tests and assist with automated testing strategies to ensure the reliability and quality of the modernized system. Participate in architectural and design discussions to propose and implement improvements in system performance, maintainability, and security. Proactively identify and resolve issues related to code quality, performance, and technical debt to ensure a robust and efficient system. Support ongoing system maintenance and enhancements post-migration to continuously improve the system’s functionality and performance. Ensure strict compliance with data security and retirement plan regulatory requirements to protect sensitive information and maintain regulatory standards. Core Competencies: Strong team player with excellent interpersonal skills Detail-oriented and capable of managing complex technical challenges Effective communicator, able to convey ideas clearly to technical and nontechnical stakeholders Proactive problem-solver with a continuous improvement mindset Required Qualifications: 2+ years of professional software development experience Proficiency in VB.NET and/or C#, with a solid understanding of .NET Framework or .NET Core Experience in large-scale codebase refactoring and system migration projects Solid understanding of software engineering best practices: design patterns, version control, testing, and documentation Experience working with relational databases (e.g., SQL Server) Strong analytical and debugging skills Excellent communication and documentation skills Preferred Qualifications Experience with qualified retirement plan administration or financial services systems Familiarity with modernization tools (e.g., code analyzers, migration tools) Experience working in agile or iterative development environments Understanding of data compliance requirements (e.g., ERISA, IRS guidelines) Why Join Us? Be part of a transformative project impacting the core systems of a respected retirement software provider Collaborate with a dedicated team that values quality, innovation, and long-term system sustainability Competitive compensation and benefits Opportunity to shape the future architecture of a critical enterprise platform What's important to us at Gemini: Make long term investments In people, technology, and customers. What goes around comes around and when possible, we try to pay it forward. Growth through learning Learning is the key to success. We encourage employees to share their expertise and best practices with their peers. That way, we all grow together. Autonomy Our staff operate independently in a decentralized structure. Whenever possible, we provide the independence required to drive growth and success. Trust comes first We believe in full transparency and ongoing communication; if there is a problem, we try to work collaboratively on solution FLSA Designation (US Only): Exempt Salary Range (US Only): The estimated base salary range for this role in the United States is $56,000.00 - $84,000.00 per year. For compliance with local legislation, and to provide greater transparency to applicants, we share salary ranges on all job postings regardless of the desired hiring location or whether the position is remote. The posted range is an estimate and reflects many factors which are subject to change. Final offer amounts may vary from the amounts listed above, based upon geographic location, candidate experience and expertise, and other relevant factors. Other Compensation (US Only): This role will also be eligible for participation in a Company profit sharing bonus plan. Plan details will be provided to you upon hire. Benefits (US Only): Full time employees will also be eligible for enrollment in a wide range of choices of benefits , including medical, dental, vision, basic life insurance, short/long term disability, 401(k) participation (with company match). Time off (US Only): The Company provides a minimum of 10 days of vacation for new employees , sick time based on state requirements, 8 Company-paid holidays and 2 personal holidays per year. We recognize the value and importance of diversity and inclusion in our communities and in the workplace. We celebrate diversity and one of our goals as an employer is to create an inclusive work environment for all employees. We are an equal opportunity employer and do not discriminate against any employee or applicant because of race, religion, sex, sexual orientation including gender identity or expression, pregnancy, national origin, age, marital status, veteran status, disability status, or any other category or characteristic protected by law. Applicants with disabilities who would like to require a reasonable accommodation related to any part of the application process may contact us at Perseus_HR@constellationhbs.com. NOTE: If an applicant is selected to receive a conditional offer of employment, and in accordance with applicable law, a criminal background check may be conducted before the offer becomes final and employment begins. Pursuant to the San Francisco Fair Chance Ordinance, and other applicable laws, we will consider for employment qualified applicants with arrest and conviction records. #Calcair Perseus, an operating group of Constellation Software Inc., acquires independently managed software companies around the world. It provides them with the strategic guidance and financial security they need to become leaders within their respective markets. Perseus Group is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status. "We seek out vertical market software businesses where motivated small teams composed of good people, can produce superior results in tiny markets. What we offer our business unit managers is autonomy, an environment that supports them in mastering vertical market software management skills, and the chance to build an enduring and competent team in a ‘human-scale’ business" Mark Leonard President, Constellation Software Inc. Be wary of any Perseus Group job posting that is not also listed on this site. If you have any doubt as to the authenticity of a particular job posting, please contact our Perseus HR team at perseus_hr@constellationhbs.com
This job posting was last updated on 12/23/2025