SENIOR PRODUCT DESIGNER
Made with ❤
@ 2026 by Lena Janczak
INTRO
Senior Product Designer shaping fintech SaaS, complex UX, and AI-augmented design.
I've spent my career designing products where the stakes are high and the flows are genuinely complex: cards issuance, payment processing, configuration interfaces, and financial onboarding. The kind of work where getting it wrong costs someone money or trust.
THREDD VISA EY BARCLAYS APPLE DUNNHUMBY GOAL.COM
TRUSTED BY TEAMS AT
WORK
Selected work
CASE STUDY - 01
Designing the Product & the Practice
Transforming legacy financial systems through strategic design leadership.
CASE STUDY - 02
Visa Click to Pay
Scaling high-converting, tokenized checkouts for Traditional British Bank.
CASE STUDY - 03
Ad Revenue Optimisation
Replacing disruptive onboarding interstitials with native ads to reduce churn.
ABOUT
Designing clarity from complexity.
I am a Senior Product Designer and design leader specializing in the complex, high-stakes architecture most avoid—fintech, card network infrastructure, compliance, and enterprise SaaS. I don’t just handle systems-level complexity; I thrive on it.
My value lies at the intersection of product strategy and execution. I don’t just design pixels. I re-engineer dense business logic into seamless, intuitive experiences. Guided by rigorous design thinking, I challenge assumptions, ask the hard questions, and align cross-functional teams to drive meaningful product outcomes.
I bring equal parts precision and empathy to my work. This balance is shaped by a highly adaptable, global background and a rich life outside of tech as an oil painter, portrait artist, and certified yoga instructor. Today, that diverse perspective is grounded in a deep commitment to both my craft and my family.
01
High-Stake Complexity
Deep UX systems for card issuance states, payment processing, financial onboarding flows, and compliance-heavy interfaces where precision is non-negotiable.
02
Design Leadership
Driving cross-functional alignment and using operational frameworks to shift teams from feature output to measurable user and business outcomes.
03
Future-Proof Systems
Architecting flexible, white-label design systems and governance frameworks that cross borders, align engineering tokens, and scale seamlessly across multi-market enterprise platforms.
TESTIMONIALS
What others think of me
“As part of my team Lena excelled with proactive ideas and tackling complex problems in a logical and user friendly way. She is creative, a team player and someone who will never let you down!”
ANDY HALL
DIRECTOR OF PRODUCT DESIGN, DUNNHUMBY
“Lena has been adaptable to ever changing priorities and handled it with grace while also working at pace to deliver high quality designs across every project she supported.”
TOM THORLEY
DESIGN PRINCIPAL, BARKLAYS
“Lena's approach to design and critical eye for UI are excellent and what she and the team produced was so impressive that we immediately pushed it into production.”
PAUL WISEALL
CO-FOUNDER, ITERNAL
“Beyond design skills, Lena is a genuine team leader — guiding colleagues with clarity and collaboration, while inspiring confidence in every project.”
PHILIP TYLER
PRODUCT LEAD, THREDD