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Siarhei Mardovich
Principal Product Designer
Fintech, Capital Markets, Risk Visualization, AI Trust, Decision Intelligence
Principal product designer with 12+ years designing high-stakes data interfaces for fintech, capital markets, risk, compliance, and AI/ML decision systems. I build institutional decision intelligence that reveals the mechanism behind model output, keeps uncertainty visible instead of flattening it into false precision, and makes the next action defensible rather than merely confident. I use AI coding agents to turn strategy into functional React and TypeScript prototypes, handing teams working logic instead of static specs.
- Jersey City, NJ 07306
- siarhei.mardovich@gmail.com
- siarheimardovich.com
- Medium
- US work authorization
Submission-ready summary
Principal Product Designer with 12+ years in fintech, capital markets, AI trust, and decision intelligence. Embedded with UBS, CME/NYMEX, Refinitiv, KKR, Thomson Reuters, and Google via EPAM. Built 300+ design-system components, reduced time-to-insight from 15 minutes to 3 minutes at ElectrifAi, and turned 22,000 probabilistic data points per asset into committee-ready views at Jupiter. AI-fluent with 4 Anthropic certifications. Open to principal/staff product design roles in the Greater New York City Area.
Target Roles
Principal, Staff, Lead, and Head of Product Design Roles
Open to principal product designer, staff product designer, lead product designer, product design manager, and head of product design roles in fintech, capital markets, AI trust, risk platforms, compliance, RegTech, payments, institutional trading, decision intelligence, and enterprise data products. Preferred location: Greater New York City Area, NYC, Jersey City, hybrid or onsite for the right fintech team.
ATS Keyword Coverage
Relevant Keywords
- Principal Product Designer
- Staff Product Designer
- Lead Product Designer
- Head of Product Design and UX
- Fintech UX
- Capital Markets UX
- Trading Interfaces
- Options Trading
- Risk Visualization
- Decision Intelligence
- Compliance Dashboards
- RegTech
- Model Risk
- AI Trust
- AI/ML Decision Interfaces
- Payments UX
- Banking-as-a-Service
- Anomaly Detection
- Data Visualization
- Information Architecture
- Design Systems Architecture
- UX Research
- Usability Testing
- Accessibility WCAG 2.1 AA
- React
- TypeScript
- D3.js
- Three.js
- Leaflet
- Figma
Professional Summary
Product Design for High-Stakes Data Decisions
Principal product designer and design leader with 12+ years building interfaces where misreading data carries capital, risk, and compliance consequences. Proven record establishing design systems with 300+ reusable components, running 500+ user-research sessions, and validating decision interfaces in code before engineering build to cut rework and catch logic errors early. Deep strength in risk visualization, data visualization, and information architecture, with WCAG 2.1 AA accessibility throughout and the ability to prototype production-grade interfaces in React and TypeScript. AI-fluent, with 4 Anthropic certifications.
Skills
Core Competencies
- Product Design & UX Strategy
- Fintech & Capital Markets UX
- Risk Visualization
- Trading & Options Interfaces
- Decision Intelligence
- Compliance & RegTech Dashboards
- Payments & Lending UX
- Banking-as-a-Service (BaaS)
- Anomaly Detection
- Data Visualization
- Information Architecture
- Design Systems Architecture
- AI/ML Decision Interfaces
- UX Research & Usability Testing
- Rapid Prototyping & Component Libraries
- Cross-Functional Team Leadership
- Stakeholder Alignment
- Accessibility (WCAG 2.1 AA)
- Agile, Scrum & Lean UX
Technical Skills
Prototype Engineering and Design Tools
- React, TypeScript, Vite, Tailwind CSS
- Recharts, D3.js, Leaflet, Three.js
- HTML, CSS, JavaScript, Storybook
- Figma, FigJam, Sketch, Adobe Creative Suite
- AI coding agents: Claude Code, Refact.ai
Evidence
Selected Metrics, and How They Were Measured
One measured product metric is listed below with its measurement method. Scope and activity counts (components built, data points handled, years of experience) are separated further down as scale of work, not outcomes, so they are not read as impact.
Time-to-insight at ElectrifAi
Measured across 8 dashboards serving 500+ daily active users, comparing task-completion time before and after the redesign.
Scale of work
Activity & Scope Counts
These are activity and scope counts from prior roles, not product KPIs. They describe the size and shape of the work, not a measured outcome.
Reusable components across 2 design systems
Cumulative count of published components in the enterprise design systems built at ElectrifAi/Jupiter and at Thomson Reuters/Refinitiv.
Components for Thomson Reuters/Refinitiv
Component-library count delivered for an institutional data-heavy design system used across talent and market-data products.
Data points per asset at Jupiter Intelligence
Probabilistic climate-risk model output per asset location, surfaced in committee-ready disclosure views.
Years in product design
Cumulative professional experience from December 2010 to present, spanning financial, enterprise, healthcare, climate, and AI/ML products.
Professional Experience
Experience
Principal Product Designer, S&C Advisory and Venture Studio
- Product design for fintech and AI decision interfaces, translating complex data and model output into clear, auditable product experiences.
- Built working React and TypeScript prototypes with AI coding agents so strategy ships as working logic rather than static specs.
- Aligned design decisions with business and engineering stakeholders to reduce rework and accelerate the path from insight to release.
Head of Product Design and UX, AI Media
- Lead product design for hardware-encoder solutions and digital product interfaces, assembling 4 interdisciplinary prototyping teams.
- Designed and prototyped updated software and hardware encoder solutions, validating flows through iterative user testing before build to cut onboarding friction and post-release rework.
- Established a Lean UX and Design Sprint practice that shortened design cycles and moved validated decisions into the build queue faster.
- Led user testing with 50+ participants and aligned design strategy with business goals, feeding validated requirements into the build cycle to reduce mid-sprint change requests.
AI-Augmented Product Designer, S&C Advisory
- Delivered end-to-end product design for fintech clients using AI-assisted design and development workflows, focused on data visualization and decision support.
- Designed and prototyped a suite of 5 digital products for a fintech client using AI coding agents, delivering working coded prototypes instead of static specs to remove a spec-to-build rework loop.
- Developed data-visualization tools tracking financial-advisor career events, shipping a dashboard that made dense advisor data decision-ready in a single view.
- Conducted user testing with 30+ participants, refining features before build to cut late-stage change requests.
Product Designer, Tassat
- Led product-redesign initiatives for a blockchain-based financial platform, modernizing legacy interfaces and validating the new flows with users before handoff.
- Conducted competitive analysis of 8 competitors and user research with 20+ participants to guide and validate design decisions.
- Collaborated in a 15-member cross-functional team; partnered with development to ensure technical accuracy of new features.
Independent Design Consultant, Self-employed
- Selected fintech and enterprise UX engagements spanning digital product design, cross-functional leadership, and user-centered strategy.
- Led cross-disciplinary creative initiatives combining digital design, physical fabrication, and community-driven engagement.
UX Designer, Design Systems & Data Visualization, Jupiter Intelligence
- Designed data-visualization tools for a climate-risk assessment platform serving enterprise clients, turning 22,000 probabilistic data points per asset into committee-ready views while keeping uncertainty legible for decision-makers. Read the Uncertainty as Signal case study.
- Pioneered day-one data prototyping: wiring live climate models and satellite imagery, Leaflet, and Esri directly into prototypes so designs held up against real, messy institutional data before engineering handoff.
- Established design-system standards with 100+ reusable components, cutting case study time and keeping the UI consistent across products; developed personas across 4 key segments informing product-roadmap priorities.
Independent Design Consultant, Self-employed
- Advised US enterprise and fintech clients on design and product-delivery continuity through the 2020–2021 relocation of Eastern European IT talent, re-establishing distributed design and engineering teams in new locations.
- Reconnected relocated teams to client product roadmaps, preserving design quality and delivery momentum through the transition.
Senior Product Designer, ElectrifAi
- Designed interfaces for AI/ML-powered analytics platforms, focused on big-data visualization and dashboard development.
- Built 8 dashboards serving 500+ daily active users; reduced time-to-insight from 15 minutes to 3 minutes through optimized visualization patterns and information architecture.
Senior UX Designer, EPAM Systems
- CME/NYMEX: designed interactive 3D visualizations of market volatility, helping traders and analysts read the surface and act on it faster. Read the Volatility Surface case study.
- Thomson Reuters/Refinitiv: built 200+ design-system components and ran usability testing with 100+ participants. Read the Know Who Knows case study.
- UBS: redesigned legacy financial tools aligned to NEO/Frontify platform standards, streamlining high-frequency trading-desk workflows.
- KKR and Google: designed user-centric interfaces for KKR’s financial products and collaborated with Google product teams via design sprints, launching 3 features.
Selected Portfolio
Relevant Case Studies
Incline Trust
AI finance operations · RegTech · compliance dashboard
AI expense-exception review that keeps model mechanism and uncertainty visible and welds each verdict to an immutable, auditable record.
Volatility Surface
Capital markets · options trading · CME/NYMEX via EPAM
Linked options-trading workspace holding one market context across surface, slice, grid, spread, and strategy views.
Uncertainty as Signal
Climate risk · risk modeling · Jupiter Intelligence
Disclosure platform turning 22,000 probabilistic data points per asset into committee-ready intelligence.
Know Who Knows
Talent intelligence · Thomson Reuters/Refinitiv via EPAM
Enterprise talent-mapping interface; roster, org-grid, and network views assemble a qualified team from a 200-person pool in under 4 minutes.
North Bridge
Private capital · public-safe case study
Reconstructed coverage portal unifying signal triage, company context, notes, and follow-up tasks into one connected workflow.
What Gets Measured
Clinical analytics · anomaly detection
Physician-benchmarking system across 101 physicians and 4 years of data, rebuilt as an exception-led command center. Read the Clinical Benchmark case study.
Decision Logic Before Build
Clinical informatics · R&D prototype
Dual iOS/Android clinical prototype on one shared state machine; verified decision logic and caught 2 critical errors before production.
HR as DJ, Staffing Radar
Founder-built workforce analytics product
Founder-built workforce-analytics product; designed the allocation model, system logic, and decision layer that turns staffing uncertainty into action.
6 of the case studies above ship as working React and TypeScript prototypes covering risk visualization, anomaly detection, and decision-intelligence interfaces.
Education
Education
M.S., Pattern Recognition & Systems Analysis, Belarusian State University of Informatics and Radio-Electronics, 2005.
Credentials
Certifications
- AI Fluency: Frameworks & Foundations, Anthropic, 2025
- Claude Code in Action, Anthropic, 2025
- Building with the Claude API, Anthropic, 2026
- Claude Certified Architect, Foundations, Anthropic, 2026
- Decision Making in a Complex and Uncertain World, University of Groningen
- Design Kit: The Course for Human-Centered Design, IDEO.org & Acumen
- Data to Insight: An Introduction to Data Analysis, University of Auckland
Let’s Talk
Open to principal/staff product design roles · Greater New York City Area · siarhei.mardovich@gmail.com · LinkedIn · Portfolio