Сергій

SERGII LIASHENKO
Senior Finance & Operations Executive | CFO / COO
Transformation · Change Management · Cross-functional Leadership
Kyiv, Ukraine · [відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFILE
A connector by nature, with 25+ years across finance and operations — 20+ of them in leadership roles — building cross-functional teams across IT services, investments, real estate, and consulting. I decompose complex executive priorities, assemble the right people for each component, set sharp briefs, and hold teams to high standards of efficiency — while ensuring they have everything required to deliver.
Operating philosophy: work with people → build the processes → achieve results, financial and operational. Equally comfortable owning a P&L, leading a transformation, or rebuilding a back-office function from the ground up.
CORE COMPETENCIES
Operations & Transformation
• Change Management & Org. Transformation
• Business Process Re-engineering
• Cross-functional Leadership (Finance ↔ Ops ↔ Product)
• M&A Diligence & Integration
• ERP Implementation & Automation Roadmaps
• Team Building & Talent Development (100+ FTE)
Finance Strategy
• FP&A, Forecasting, Financial Modeling
• Investment Analysis & Capital Allocation
• Reporting, Analytics & BI Automation
• P&L & Cash Flow Optimization
• Financial Controls & Governance
• Budget & Cost Management
SELECTED CAREER HIGHLIGHTS
• Architected and delivered a three-pillar finance automation program at Luxoft (16,000 employees, $1.5B revenue) covering forecasting, BI reporting, and deviation auto-commenting — releasing 25–30% capacity across a 100-person finance organization and 5–15% time savings for delivery managers and internal clients.
• Currently leading three concurrent transformation streams as Group CFO at Octava Capital: building the finance function for the MilTech vertical, executing a group-wide ERP migration across portfolio companies, and driving cross-portfolio strategic projects.
• 12-year tenure at Luxoft in a hybrid Director of Financial Partners + Operations + Product Owner role — the connector between Finance, Operations, Leadership, and Business Units across a global organization.
• Led pre-M&A financial diligence and post-deal integration across multiple transactions throughout Luxoft's growth and exit cycles.
PROFESSIONAL EXPERIENCE
Group CFO — Octava Capital, Kyiv07/2025 – present
Leading investment firm with a diversified portfolio of innovative technology companies.
Three concurrent strategic mandates:
• Building the finance function and end-to-end business processes for the MilTech vertical from the ground up.
• Leading the group-wide ERP migration across all portfolio companies — vendor selection, implementation, change management, and rollout governance.
• Driving cross-portfolio projects covering investment analysis, transformation initiatives, and group cash flow management.
Director of Financial Partners — Luxoft, Kyiv07/2013 – 06/2025
Top-tier IT services provider serving global clients. 16,000 employees, ~$1.5B annual revenue. Hybrid mandate: Finance leadership + Operations excellence + Product ownership for automation.
Managed a 100-person organization (5 direct reports). Served as the connector across Finance, Operations, Leadership, and Business Units globally.
Selected achievements:
• Designed and led a three-pillar finance automation program: (1) fully automated forecasting, (2) end-to-end reporting and analytics automation on Tableau and Power BI, (3) auto-commenting on financial result deviations. Combined impact: 25–30% capacity release across the 100-person team and 5–15% time savings for delivery managers and internal clients — capacity reinvested into higher-value work.
• Initiated and led cross-functional operational excellence and long-term strategic initiatives across the finance organization.
• Owned the product roadmap for finance automation as Product Owner — translated business needs into prioritized technical specifications and orchestrated delivery with engineering teams.
• Led pre-M&A financial diligence and post-deal financial integration across multiple transactions.
• Built and ran the business finance support function: forecasting, financial analysis, and modeling for delivery and account leaders worldwide.
Independent Financial Consultant — Self-employed08/2011 – 06/2013
Advisory engagements on financial strategy and operations across IT, real estate development, and retail businesses.
Financial Director — Finstar Properties / Meganom Group, Kyiv05/2007 – 07/2011
Commercial and residential real estate development group.
• P&L improvement, cash flow and accounts receivable optimization.
• Investment project preparation, presentation, execution monitoring, and control.
• Negotiations with investors, banks, accounting/insurance/valuation firms; debt facility attraction and management.
Financial Director — DVL Communications Holding, Kyiv12/2006 – 04/2007
Advertising services holding (12 companies, ~150 staff) serving large and mid-market enterprises.
• Managed finance and accounting functions (20 FTE).
• Designed and rolled out a group-wide budget management framework.
• Optimized financial flows across the holding.
CFO / Financial Controller / Financial Analyst — SOFTLINE, Kyiv02/2002 – 11/2006
Software development, IT consulting, hardware, and ERP implementation services (~450 staff).
Progressed from Financial Analyst (2002–2003) to Financial Controller (2003–2004) to CFO (2004–2006). As CFO: led 5-person finance team, oversaw budget processes, investment analysis, financial flow optimization, and PM for finance automation initiatives.
Leading Economist — Consulting Service Ltd, Kyiv11/1999 – 01/2002
Advisory firm specializing in management consulting on bankruptcy and corporate restructuring (~20 staff).
EDUCATION
MBA, Business Administration — International Management Institute (IMI), Kyiv2004 – 2006
Project Management Certificate, Leuven, Belgium.
Marketing in the Industrial Sphere (Honors) — National Aviation University, Kyiv2000 – 2001
Economics of Enterprise (Honors) — Kyiv Industrial and Economic College1994 – 1999
LANGUAGES, TOOLS & SELECTED RESEARCH
Languages: English (Advanced) · Ukrainian (Native) · Russian (Fluent).
Analytics & BI: IBM Cognos, Tableau, Power BI, Think-Cell, Excel.
Behavioral Compatibility Model (BCM): developing a behavioral framework for team dynamics and interpersonal compatibility, currently in calibration with real respondents (bcm-go.com).