Sigma Software Executive and Leadership Team

July, 2026

Leadership Overview

Sigma Software has 4 executives leading key functions including strategy, information technology, and finance.

Driven by a commitment to innovation, Sigma Software provides comprehensive software development services across diverse sectors, shaping technological advancements from its base in Kharkiv, Ukraine.

Leadership Roles at Sigma Software

  • Chief Executive Officer - John Kuzma
  • Deputy Chief Financial Officer - Kate Kolomiets
  • Deputy Chief Financial Officer - Kate Gribanova
  • Chief Information Officer - Julia Nilga
  • John Kuzma - Chief Executive Officer

    John Kuzma, the Chief Executive Officer at Sigma Software, directs the company's overall strategic vision and operational execution. Overseeing all business units, the Chief Executive Officer ensures alignment with the company's mission to deliver high-quality software development services. This leadership role involves navigating market dynamics and fostering innovation within the technology consulting sector. By driving strategic partnerships and expanding service offerings, John Kuzma directly impacts Sigma Software's growth trajectory. Ultimately, Kuzma secures the company's competitive position and long-term financial health.

    Kate Kolomiets - Deputy Chief Financial Officer

    Kate Kolomiets, the Deputy Chief Financial Officer at Sigma Software, supports the financial strategy and fiscal management of the organization. Overseeing key financial operations, the Deputy Chief Financial Officer ensures accurate reporting, budget adherence, and efficient resource allocation across departments. This position involves analyzing financial data to identify trends and opportunities for cost optimization and revenue enhancement. By collaborating with the Chief Financial Officer and other executives, Kate Kolomiets directly influences investment decisions and financial planning. Ultimately, Kolomiets strengthens Sigma Software's financial resilience and supports sustainable business growth.

    Kate Gribanova - Deputy Chief Financial Officer

    Kate Gribanova, the Deputy Chief Financial Officer at Sigma Software, contributes to the company's financial planning and risk management frameworks. Overseeing specific financial reporting functions, the Deputy Chief Financial Officer ensures compliance with regulatory standards and internal controls. This role involves detailed analysis of financial statements and the development of forecasts to guide strategic decision-making. By partnering with the finance team and executive leadership, Kate Gribanova directly supports the optimization of financial performance. Ultimately, Gribanova enhances the transparency and integrity of Sigma Software's financial operations.

    Julia Nilga - Chief Information Officer

    Julia Nilga, the Chief Information Officer at Sigma Software, architects the company's technology infrastructure and information security protocols. Overseeing all IT operations, the Chief Information Officer ensures the seamless integration of digital tools and platforms that support client service delivery. This critical role involves managing data integrity, enhancing system performance, and safeguarding sensitive client information. By implementing advanced technological solutions, Julia Nilga directly contributes to Sigma Software's operational efficiency and client trust. Ultimately, Nilga drives the digital transformation initiatives essential for maintaining a leading edge in software development services.
    Julia Nilga

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    Frequently Asked Questions Regarding Sigma Software Top Executives and Leadership Team

    Who leads Sigma Software?
    Sigma Software is led by John Kuzma (Chief Executive Officer), along with executives such as Kate Kolomiets (Deputy Chief Financial Officer) and Kate Gribanova (Deputy Chief Financial Officer).
    Who is part of Sigma Software’s executive team?
    The executive team of Sigma Software includes leaders such as John Kuzma (Chief Executive Officer), Kate Kolomiets (Deputy Chief Financial Officer), Kate Gribanova (Deputy Chief Financial Officer) and other senior executives.
    How many executives does Sigma Software have?
    Sigma Software has 4 executives leading key business areas.
    What roles are included in Sigma Software’s leadership team?
    The leadership team of Sigma Software includes roles such as Chief Executive Officer, Deputy Chief Financial Officer, Deputy Chief Financial Officer, Chief Information Officer.