Design partner for founders, turning complex ideas into scalable products.

Spara. GTM AI agent platform for engaging, qualifying, and routing leads across multiple channels.

Adtribute. Marketing attribution platform that connects fragmented data to map cross-device customer journeys.

Champify. Sales intelligence platform that surfaces timely company insights for sales teams.

Lightyear. Developer-first sync platform for building flexible customer data integrations.

Interseller. Recruiting outreach platform for sourcing candidates and running multi-step email sequences.

Start Monday. Mobile-first job application experience used by recruiters across different brands.

Space. Popular open-sourced wallpaper series inspired by space.

Daily Four. Get the important things done with minimal stress.

Spara

2024 — now ・ GTM AI platform

Spara is a GTM AI agent platform. I joined as the first designer when the team consisted of just the founders, and have led product design as the company has grown to a team of 20+. The work evolved as the team grew, from shaping the initial product to supporting enterprise organisations and increasingly complex, multi-channel workflows.

Lead insights

This view provides visibility into lead conversations across channels. By bringing together conversation history, enriched lead data, and touchpoints in one place, it helps teams understand context and what’s happening across leads.

Navigator

Navigator is the customer-facing interface embedded on a company’s website. It uses an AI agent to chat with potential leads around the clock, answering product questions, showing relevant demos, and guiding conversations toward booking a sales call.
The goal was to design a flexible system that could adapt to very different brands and use cases, without turning each implementation into a one-off.

Ask Spara AI

Ask Spara AI is an in-product tool that helps customers write, review, and improve their agent instructions. It analyses real lead conversations, runs tests against different scenarios, and explains why certain responses work or fall short. The design balances ease of use with transparency, so teams can trust prompt changes before deploying them.

Workflows

Workflows are a visual canvas for orchestrating AI agents and connected tools around a specific goal. Teams use them to handle scenarios like reducing no-shows or re-engaging leads that drop off after a chat. The design focused on making complex, conditional logic understandable at a glance, so teams could understand how workflows behave and what would happen next.

Analytics

Analytics provide visibility into how leads interact with agents across channels and where progress is made or lost. They make the system accountable, helping teams understand what’s working, identify friction, and adjust agent behaviour and workflows based on real interaction data.

What Zander said

Having Mark join as our first designer was transformative for Spara. He singlehandedly drove product design through the company’s first two years, turning a complex vision of AI agent orchestration for GTM use cases into a cohesive, usable product.Mark built the foundation for how design operates here and how it connects with product strategy and customer experience. His eye for detail and ability to turn complex ideas into simple, elegant interfaces set the tone for how our product looks and feels.His work helped us move fast with confidence, communicate our vision to customers and investors, and scale from a small founding team to more than twenty people. The clarity and quality he brought early on were key in helping us reach major milestones, including our $15M funding round, and continue to influence how we build today.

Zander Pease, CTO of Spara

Champify

2024 — 2025 ・ Sales

For Champify, I worked on two projects focused on helping sales teams at companies like S&P Global, Zuora, and Retool act on company intelligence without being overwhelmed. The first project explored email as an effective way to re-engage users. I designed a series of emails that shared useful signals in bite-sized pieces while pointing back to deeper context in the product.

Account intelligence

The second project focused on how account intelligence is presented inside the product. I designed a system of insight cards that combined structured data with natural language, helping sales reps quickly understand what mattered most about an account.
The design balances consistency and flexibility, allowing new signals to be introduced without increasing cognitive load.

Adtribute

2022 — 2023 ・ Data attribution

For Adtribute, I worked with the team to help large organisations understand cross-device customer journeys. The focus was designing an interface that combined fragmented data sources and complex attribution models into something customers could confidently use day to day.

Design system

We optimised for consistency and component reuse to create a predictable experience across complex workflows, while making the system easier for engineering to build and maintain.

What Alex said

Mark's contributions to our marketing attribution software have been invaluable. His ability to understand the problem we were trying to solve and our target audience was evident from the start. Through detailed questionnaires and discussions, Mark gained a comprehensive understanding of our software and its current interface.One of Mark's greatest strengths lies in his meticulous approach to design. He has a keen eye for systematizing the design and ensuring a predictable user experience. In the data analytics space, where aesthetics and modernity are crucial, Mark's ability to create visually stunning and contemporary UIs truly sets him apart. He consistently strives for the best solutions, never settling for anything less, and welcomes feedback with open arms.Mark's reliability and professionalism are outstanding. He sets clear expectations and consistently meets them, without ever missing a deadline. Communication is seamless, and I appreciate his transparent and prompt updates. Collaborating with him has been a headache-free journey, and I am truly grateful for his incredible design work.

Alex Voit, CEO of Adtribute

Lightyear

2022 — 2025 ・ Developer tool

Lightyear is a developer-first sync platform for SaaS companies to deliver flexible customer data integrations. I co-founded the company, led product design and brand, and was responsible for go-to-market strategy. The involved designing for a highly technical audience while validating product and positioning directly through customer conversations.

Code-first product design

Unlike a traditional dashboard, Lightyear is driven from code in the IDE. The design focused on debuggable logs, status reporting, and making it easy to understand how apps and integrations are connected. This meant treating observability as part of the core product, not an afterthought, and designing for how developers actually debug and reason about systems.

Interseller

2017 — 2021 ・ Outbound recruiting CRM

I worked alongside the founders of Interseller for several years as the team and customer base grew. I helped prioritise product development as the platform scaled to handling millions of emails each day, balancing customer and business needs. This work contributed to the company’s acquisition by Greenhouse.

Chrome extension

The Chrome extension enabled recruiters to source and engage candidates directly from the browser. The focus was on creating a stand-alone experience that still felt part of the wider Interseller product.

What Steve said

Mark has been instrumental to the product design of Interseller, thoughtfully understanding the needs of our product and customers. Working with Mark has been a breeze and I will, in no doubt, use his skills in future endeavours.

Steven Lu, CEO of Interseller (AQ. Greenhouse)

Start Monday

2015 ・ Mobile recruiting

I worked with Start Monday to reduce drop-off between seeing a job post and applying on mobile. The system I designed scaled across many languages, from Spanish to Dutch, and adapted to brands as different as Uber and H&M. The main challenge was balancing a consistent experience with local and brand-specific requirements.