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SENIOR PRODUCT DESIGNER - LONDON

Complex ideas, made clear

​The kind of work where getting it wrong costs someone money or trust.

Lena Janczak - MCA Awards 2024

APPLE VISA THREDD BARCLAYS DUNNHUMBY GOAL.COM

WORK

Selected case studies

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Product and Practice

Scaled design team practice by hiring 3 designers while unifying two separate legacy systems into a modern financial product suite.

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Key Outcome: Grew team capacity & drastically cut task completion times, while merging and modernising 2 legacy platforms.

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Visa Click to Pay

Defined implementation standards and design guidance to help a major UK bank seamlessly integrate tokenized Click to Pay checkouts.

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Key Outcome: Accelerated bank-wide adoption & established high-converting checkout standards

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Buy Now, Pay Later Product Strategy

Transformed traditional offline credit into a seamless in-app BNPL experience for a traditional British bank.

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Key Outcome: Secured high-stakes RFP win with Apple.​

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Payment Ecosystem Journey Maps

Delivered 6 end-to-end payment journey maps, analyzing complex banking flows and diagnosing deep friction points within credit card journeys.

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Key Outcome: Uncovered critical drop-off points & aligned senior bank stakeholders

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Retail Insights Engine

Converted complex multi-source sales analytics into automated narrative insights for retail business teams.

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Key Outcome: Transformed raw data into daily actionable insights for retail decision-makers

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Ad Revenue Optimisation

Replaced aggressive onboarding interstitials with native ad placements to balance monetization with user experience.

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Key Outcome: Slashed initial user drop-off from 70% down to under 10%

ABOUT ME

Driven by logic, defined by craft

Senior Product Designer & Team Leader
Fintech, enterprise SaaS, and mobile, where complex business logic meets human utility.

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What I do

  • Lead cross-functional squads from ambiguous discovery to shipped product

  • Turn dense, compliance-heavy architecture into systems engineers trust and users actually adopt

  • Design for deep configurability without making the experience feel complex

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How I work

  • Product strategy and precise interaction design, together from day one

  • High-fidelity, polished execution, with AI speeding up the workflow

  • Guided by one belief: good products respect people's time and real-world needs

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Beyond the work

  • Worked across six countries, permanently settled in the UK

  • Yoga instructor and oil painter

  • Family-focused

Hi, there from Barclays Bank office.

PILLARS OF EXPERTISE

Workflow Acceleration

I leverage AI as a practical workflow multiplier to accelerate system architecture, scale design systems efficiently, and deliver high-stakes complexity with absolute clarity and speed.

User Advocacy

I firmly believe that products fail when they don't respect the user's time and real-world needs. I bring the essential human touch to technical complexity so users never feel abandoned by the software.

Systems & Strategy

I align deep technical logic with polished, high-fidelity execution, ensuring that dense configurability and system architecture look as robust and premium as the logic behind them.

Let's connect.

Happy to chat about design or anything else.

TESTIMONIALS

What others think of me

“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, BARCLAYS

“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

“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

“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.”

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PAUL WISEALL

CO-FOUNDER, ITERNAL

THANKS FOR VISITING

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You scrolled all the way down here? You are an absolute legend.

 

Sending you good fortune today.

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