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Executives

Our company’s leaders have decades of combined experience developing software projects.

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Oleks Mykolaienko
Oleks Mykolaienko
Founding partner & CEO
Oleks has over a decade of experience in software development. As CEO of Tallium, he guides the team’s daily operations and strategic direction.
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Serge Nekipelov
Serge Nekipelov
Founding partner & President
Serge has been working with globally-recognized brands for more than 20 years. He is a process-oriented digital marketing expert and UX perfectionist with strong management skills.
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Henrik Åsén
Henrik Åsén
Partner & CIO
Over 18 years of experience from working with digital projects and products. As a tech lead, Henrik works with both operational and strategic questions for our projects and clients.
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Christian Schaffner
Christian Schaffner
Partner & CCO
Christian has been engaged in Creative work for over 20 years. As the Creative Director, Christian has both the strategic and operational role for the creative work.
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Vitalii Aizen
Vitalii Aizen
Partner & CBDO
Vitalii is an enthusiastic and results-driven leader with 12+ years of experience in product management, UX/UI design and digital marketing.
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Filipp Danylchenko
Filipp Danylchenko
Head of PMO
A highly responsible and versatile manager with experience in IT, Digital Marketing and Product Management.
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Oleksandra Klymyk
Oleksandra Klymyk
HR Business Partner
Oleksandra oversees HR operations, develops and implements HR policies aligned with company goals, and maintains a people-focused culture at Tallium.
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Jens Wernborg
Jens Wernborg
AI Strategist/Head of Tallium Asia
Jens has over 25 years of experience in business strategy and technology innovation, currently specializing in digital transformation and Generative AI.
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Our history

Web & Mobile App Development has been a core competence of the company since 2012

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2012
Foundation across two continents.
Product-driven launch.
Tallium roots established with teams in Canada and Ukraine, starting from one product, DesignContest – an international marketplace for outsourced graphic and UX/UI design.
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2014
Building core
engineering services.
Focused on expanding technical services and managing remote teams for internal projects, our delivery and tech expertise has started to develop.
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2015
Launching Tallium Brand.
First outsource projects.
With the launch of the Tallium brand, we entered the global market – stepping into the world with first outsourced projects, and turning in-house strength into client success.
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2016
First strategic partnerships.
Growing a global partner network.
From projects to partnerships — we became a strategic tech ally for companies ready to grow, think big, and launching joint projects, especially in Sweden and Scandinavia.
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2018
Entering the Enterprise market.
Fintech Practice Launch.
Our first enterprise clients, major banks and rising fintechs, challenged us to scale our delivery, compliance, security and management practices.
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2019
New Office & New Heights
More great names joined our journey - Prostor, Sense Bank, Deloitte, Mangold, Leonteq, — enriching our portfolio and raising the bar for what we deliver.
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2020
Foundation of Tallium Digital.
Digital Transformation & Consulting Services.
As our clients grew, so did we — launching Tallium Digital to support their strategic goals through digital transformation, IT consulting, and tailor-made education programs.
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2021
R&D Hub in Poland.
Talents Development & Team Growth.
Opened a new R&D hub in Poland to drive innovation and strengthen European delivery capacity, and launched Tallium Academy as an internal education and training platform to nurture talent and leadership.
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2022
Year of Resilience.
Reaching 100+ talents.
In the face of war, we’ve focused on ensuring team safety and remaining our operations for clients at full-speed - standing with Ukraine, supporting Ukrainian army and our colleagues who joined the armed forces.

Grew the team to 100+ experts delivering projects in healthcare, fintech, education and scale-ups.
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2023
Strategic Mergers & Stockholm Office
Merged with 61 Degrees North and opened a Stockholm office to deepen our Nordic presence and unlocking new opportunities across Europe.
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2024
AI transformation & AI services.
Tallium in Hong Kong.
We embraced AI as a core pillar — launching new services that help clients innovate faster, automate smarter, and lead in the age of intelligent products.
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2025
Tallium today:
Global reach, strong roots.
Today, Tallium unites global delivery with strong Ukrainian roots — helping clients worldwide build impactful, future-ready digital products.

Our journey is powered by people — talented, curious, and brave enough to shape the future together.
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Do you want to be part of our team?

We’re constantly growing and expanding our team in different locations —
and we are always happy to welcome new great talents. Join us!

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Join
our team
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Our Principles

We are building a company where people love to work.
Discover our key principles - they are at the core of Tallium culture.

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Diving Deep.
We embrace challenges, knowing research leads to solutions. We focus on actionable concepts that deliver value and prioritize client success.
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Flawless Execution.
We ship with discipline: clear ownership, tested deliverables, and predictable timelines. Quality is non-negotiable at every stage.
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Embracing the Innovations.
We stay curious and hands-on with new tools and methods, turning emerging ideas into practical advantages for our clients.
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True Caring.
We collaborate with clients to adapt and improve our products, using our expertise and feedback to cut costs and boost results.
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Being Agile.
We plan realistically, communicate early, and deliver on time. When priorities shift, we respond fast without sacrificing quality.
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Constant Improvement.
We learn from every release, measure outcomes, and refine our craft—one iteration at a time.
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Contribution & Teamwork.
We foster strong relationships with clients and partners through honesty and respect, ensuring transparency and trust with direct access to our team.

Our Offices

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🇳🇱Netherlands | Amsterdam
Sales Office
Keizersgracht 452,
Amsterdam, Netherlands, 1016GD
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🇺🇦Ukraine | Kyiv
R&D Office
72 Velyka Vasylkivska str.,
Ent. 3,Kyiv, 03150
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🇵🇱Poland | Rzeszów
R&D Office
ul. JANA KAROLA CHODKIEWICZA, nr 7,
lok. 339, miejsc. RZESZÓW, kod 35-045, Poland
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🇸🇪Sweden | Stocholm
Sales Office
Artillerigatan 42,
Stockholm, 114 45, Sweden
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🇨🇦Canada | Galgary
Sales Office
100 - 111 5th Ave SW,
Calgary, AB, T2P 3Y6, Canada
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Get in touch

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