Konstantin Misirdzhiev

Senior Product Designer

Human-centered product designer with 10+ years of experience creating intuitive, scalable digital experiences across healthcare, finance, and enterprise products. Skilled at translating complex requirements into elegant interfaces, building design systems, and collaborating with product managers and engineers to deliver user value. Adept at prototyping, usability testing, and aligning design solutions with both user and business needs.

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10+ years

In product and digital design

Healthcare, finance, enterprise

Web and mobile applications

Design Principal, Tieto

2025 — Present

My experience

From graphic design to design principal.

Tieto(formerly MentorMate)

2020 — Present

Design Principal

2025 — Present

Led product design for web and mobile applications in healthcare, finance, and enterprise
Partnered with product managers and engineers to ensure design quality and scalability
Advocated for human-centered design and elevated design standards across teams.

Design Director

2024 — 2025

Oversaw product experiences from discovery workshops to polished UI
Guided cross-functional teams in aligning user needs with business and technology goals
Ensured design consistency and accessibility across large-scale projects.

Design Lead

2022 — 2024

Designed end-to-end digital experiences, including flows, wireframes, prototypes, and high-fidelity UIs
Collaborated closely with stakeholders to refine product requirements
Mentored junior designers while remaining hands-on in delivery.

Senior Designer

2020 — 2022

Delivered user-centered interfaces for complex products
Contributed to design systems and usability improvements
Balanced business goals with user needs through iterative design.

Pony Studio

2019

Lead UX/UI Designer

Designed mobile-first interfaces with strong emphasis on usability and brand expression
Translated project requirements into cohesive product experiences.