Spark your business transformation

Spark Actuarial works with you to meet your business goals, setting global standards. Uniquely positioned to support all sectors including insurance, banking and finance, Spark’s creative solutions fit your strategies and ignite success.

Our team combines expertise in diverse fields and markets to offer unique perspectives on challenges in a wide range of areas, from life, general, health and retirement insurance to risk management and employee benefits.

Experience in both developed and emerging markets has given us the ability to tailor solutions to the environment in which you operate, while adhering to global standards for professionalism, processes, and controls.

Our Team

We’re a passionate team of problem solvers, math geeks, entrepreneurs, and strategic planners. We love what we do, care about the clients we serve, and are fulfilled by the impact we make.

Milanthi Sarukkali

Founder & CEO

Milanthi Sarukkali, Founder and Chief Executive Officer of Spark, is a Fellow of the Society of Actuaries, USA and holds a Ph.D. in Mathematics (concentration in Actuarial Science) from the University of Connecticut.

Milanthi was with ING U.S.A. (now Voya Financial) for 7+ years, during which time she held many roles, ranging from modeling to pricing to risk management. She has extensive experience in asset liability management and led the ING Retirement Services ALM team for 2 years. She is also the former Chief Actuary and Chief Risk Officer of Allianz Insurance, Sri Lanka.

Milanthi is the Appointed Actuary for a specialized microinsurance provider in Sri Lanka. Additionally, Milanthi works with the Government of Sri Lanka and its agencies as a consultant in retirement planning and is a visiting lecturer at the University of Colombo.

Marsha Subasinghe


Marsha Subasinghe, COO at Spark, is an Associate Member of Charted Institute of Management Accountants, UK (ACMA) and holds an MSc in Information Technology and an MA in Financial Economics from the University of Colombo.

Marsha has over 15 years of experience in the IT/BPO/KPO industry. She started her career at Roomsnet, as a Business Analyst and then moved to Amba Research (currently Moody’s Analytics), where she worked as an Equity Research Analyst supporting buy-side clients. Later on, as a Vice President, she managed teams servicing buy-side and sell-side clients in the US, Europe and Asia, engaged in financial modeling, preparation of company reports and thematic research. After Amba, she was instrumental in starting SAKS Global, a BPO based in Sri Lanka, which provides services in finance & accounting, software development and market research. Marsha’s experience spans finance and accounting, equity research, financial valuation, recruitment, business analysis, people management and product delivery.

Maureen Tresnak

Partner and Senior Consultant

Maureen Tresnak, Partner and Senior Consultant at Spark, is a Fellow of the Society of Actuaries, USA and a Member of the American Academy of Actuaries.

Maureen is a senior actuarial leader with over 20 years of experience, including 17 years of experience in all aspects of managed healthcare. Most recently, she led the Medicare Actuarial department at Health Net Inc. in California. She has extensive experience in health insurance product design and risk management. Supporting network contracting is another area in which she excels, including contract language review and calculating provider settlements, health plan education, and liaising with IT teams as the subject matter expert in system implementations.

Additionally, her experience in project and resource management and ability to work across functions has helped her to implement change in all areas of the healthcare spectrum.

Karthiga Kathirgamanathan

Manager Finance and Operations

Karthiga is an Associate Member of CIMA, UK and holds an of MBA from the University of Wales. She has over 15 years work experience covering Finance, Banking, Audit, Research, Operations People Management and Service Delivery.

She started her career with Deloitte where she engaged in Audits, Accounting, Research and Business valuation of leading companies including Fortune 500 companies. She then moved to ICICI bank as an Executive and gained exposure in Treasury operations & Retail banking and has worked in the Bank’s Mumbai offices in India. She was also a Research analyst at Taprobane Securities. Karthiga then joined WNS Global services as Deputy Manager Operations, where she was responsible for leading multiple teams in Financial Control and Reporting for one of UK’s leading insurance company and has also worked in the client’s head office in the UK. She gained wide exposure to the BPO Operations and managing the GL Accounting & Governance, Statutory Reporting, Implementation of internal controls and Process automation.

Carlos Arocha

Partner / Senior Consultant

Carlos is a Fellow of the Society of Actuaries and holds a Bsc in Actuarial Science, University of Anahuac Mexico

Carlos has over 25 years of experience in the life and general insurance as well as the reinsurance industries. He focuses on Enterprise Risk Management, Solvency II advisory services Appointed Actuary consulting mandates, development and validation of internal risk models, reinsurance optimization programs and miscellaneous quantitative risk management projects. Carlos has worked in companies such as Swiss Re, Mercantile & General Re, Watson-Wyatt (now Towers Watson) and Hewitt Associates (now Aon Hewitt), in Mexico, the United States, Canada, and Switzerland. He has served as Chairperson, International Section Council Society of Actuaries, and is currently the Society of Actuaries Ambassador for Switzerland.

Devindi Samaranayaka (ASA)

Devindi is an Associate of the Society of Actuaries (SOA) and is currently pursuing her exams for Fellowship. She also holds a MSc in Financial Mathematics from University of Colombo, Sri Lanka.
Devindi has over 6 years of experience working in the life insurance industry, having previously worked at AIA Insurance and LOLC Life Assurance. She has strong experience in building models for actuarial valuation, experience studies, product pricing and business projections in Prophet and RAFM.
Devindi has worked extensively with all core teams within the company in her most recent role as Manager – Actuarial at LOLC, on product development and systems implementation projects.

Ritchie Adaman

Ritchie holds a Post Graduate Diploma in Actuarial Science from University of Kent and a Bsc in Mathematics and Economics from London School of Economics.
Ritchie has over 5 years of experience working in the life insurance industry, having previously worked as Manager—Actuarial at HNB Assurance PLC.
He has strong experience in building models for actuarial valuation, experience studies, product pricing and business projections in Excel and Prophet.
He is currently pursuing his actuarial professional exams with Institute and Faculty of Actuaries (IFoA).

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