Helping YC startups with Swiss army knife design skills
17+ years designing and coding digital products, helping startups achieve PMF through rapid prototyping.
Trusted by industry leaders at
Supporting these YC startups
[01]
What I do
/ SKILLS 🎨 1 ⋮ 4
What I do
I’m Jack of all trades master of none design!
Here’s the spread of my core skills:
[02]
What they said
/ TESTIMONIALS đź’¬ 2 â‹® 4
What they said
Trusted by top industry leaders
Hasan has been an incredible asset to Simbie AI from day one. As our founding designer, he’s elevated everything from our marketing website to our product UI and sales demos with precision, creativity, and speed. He’s not only a talented designer but also a thoughtful, strategic partner who brings energy, enthusiasm, and a deep commitment to our mission. We’re so lucky to have him on the team.
“Hasan has been a critical part of Obento Health as our founding designer. From user flowcharts to iOS applications, marketing websites, promo videos, and even animations, Hasan’s designs have elevated every aspect of our product and brand. His dedication and versatility have been key to bringing our vision to life and helping us make a strong impact.”
“Hasan knows how to turn ideas crossing your mind into a reality! His ability to think end-to-end when it comes to brainstorming, making a vision concrete, planning and executing doesn’t just elevate your design – it brings your business forward.”
Hasan’s exceptional blend of creativity and technical insight transformed our product’s visual identity while ensuring a seamless user experience. His collaborative approach and strategic thinking make him an invaluable partner for any team serious about innovation.
“Hasan played a crucial role in AXAR AI’s early stage, elevating our UI/UX design and branding. His creativity and dedication during a two-week hackathon with our engineering team helped shape a strong foundation for our product. Hasan doesn’t just deliver exceptional design; he becomes a true partner in driving innovation and creating impactful user experiences.”
I truly appreciate the dedication and hard work of Ashiful Haque and Hasan Mahmud, our website developer and online donation platform programmer. They have been incredibly helpful, always responsive, and consistently committed to supporting the mosque’s mission. Their professionalism and willingness to go the extra mile have made a real difference, and we’re truly grateful for their contributions.
“Hasan is the kind of ‘jewel’ every team wishes to have. His drive for excellence, ambition to improve, and up-to-date expertise have made him excel in his field. He’s an outstanding markup developer, an inspiring UI designer, and a highly skilled flash developer. I’m confident he has a bright and prosperous future ahead.”
“Hasan is a superstar designer. During his involvement with Trippert Labs, Hasan proved his talent to the team in a very short time and soon he became the key player of the design team. Hasan is an inbuilt team building persona which always makes him a key player in any professional work he gets involved in.”
“Hasan is a great asset to the Wild Ones team. The quality of his work is outstanding and the speed at which it is completed is quite impressive. He tends of always have a large amount of work to do and it seems like no matter how much of a load we put on him, he gets it done (and is always very polite in his emails and comments). His attention to detail and understanding of the style of Wild Ones is reflective in every asset he creates and is greatly appreciated. I have nothing but praise for Hasan.“
“I found him very sincere and innovative markup guy. His dedication to his work was maximum. I like his work a lot. Besides, as a person he is very open minded and jolly. I wish his every success!”
“Hasan is one of the best co-workers I’ve ever worked with. He’s got talent, skills and quick learning capabilities. Most importantly, he can understand requirements quickly and delivers accurate output in short time. Most people in our team like him for his positive attitude. Do I want Hasan as teammate in future projects? – The answer is Yes.”
“Hasan is a dedicated web designer with an excellent designing ability, quick responses, and superb problem-solving ability. I recommend him as your 3D designing as well as web developing partner.“
“Hasan is undoubtedly one of the best UI/UX specialist I have ever known. His dedication to work is simply awesome. He is really enthusiast about the UX and it shows in his works. “Speed of delivery, Quality of work and the added bonus of thoughtfulness in his every work” – helps Hasan stand out in the ever growing world of UX designers. Above all, he is a gem of a person and a true friend. Sometimes it feels like this guy is a SuperHero in disguise that just walked out of a marvel comic book. His super power: “simplicity”.“
“I had the pleasure of working with Hasan on the Fish-Friends project, where he excelled at multitasking across multiple projects, including Tiki-Farm. Hasan’s excellent communication skills and deep knowledge made him a key player, effectively bridging the gap between artists and developers. He’s patient, detail-oriented, and always maintains high standards, even under pressure. I learned so much from working with him.”
“Hasan has a remarkable sense of style, color, and an impressive grasp of markup technologies. He’s quick to adapt to new challenges and technologies with enthusiasm and is always eager to learn. Hasan is a talented designer and developer who values feedback, collaborates well with his team, and shares his knowledge generously to help others grow. He’s jolly, sincere, and consistently delivers high-quality work. I wish him continued success in his career.”
[03]
Experience
/ JOBS đź’Ľ 3 â‹® 4
Experience
I've had the privilege to collaborate with these incredible teams.
Founding Product Designer
Aug 2024 - Present • 5 mos • San Francisco • Remote
- Single designer in the company working between both the product and marketing departments.
Head of Product & Design
Jul 2021 – Present • 3 yrs 6 mos • SF Bay Area • Remote
- Designed and developed a high-converting website, achieving 36.1K visitors, 44.9K sessions, and a 25% reduction in bounce rate.
- Conducted HotJar analysis and QA testing to identify user issues, and ensure high-quality feature releases.
- Improved PLG flow, user onboarding, navigation, and UI components, balancing UX with company goals, and ease of implementation.
Principal Designer
LifeData
Jan 2014 - Jun 2021 • 7 yrs • Marion, Indiana • Remote
- Collaborated with PM, developers, support, and marketing teams to ensure product goals were met.
- Designed wireframes, mockups, prototypes, and design specs for developers, including writing HTML & CSS.
- Defined PRDs for new features by balancing user-centered, business, and engineering goals.
Senior UI/UX Designer
Jul 2012 - Oct 2013 • 1 yr 4 mos • Dhaka, Bangladesh
- Collaborated with game producers, developers, project managers, and artists to ship new features.
- Improved game performance and load times through extensive asset optimization for mobile games.
Senior UI/UX Designer
Playdom
May 2010 - Jun 2012 • 2 yrs • Dhaka, Bangladesh
- Contributed to the Facebook game of the year, Gardens of Time, and increased revenue by actively working on weekly content releases.
- Enhanced engagement, DAU count, and monetization on the popular multiplayer game, WildOnes, through gamification and user retention-focused features.
- Part of the acquisition team during Playdom's acquisition by Disney for up to $763.2 million.
Design Consultant
TrippertLabs
May 2010 - Jun 2012 • 2 yrs • Dhaka, Bangladesh
- Designed top-ranking app store games, securing top 3 positions, and contributed to multiple Facebook games, aiding the company's $13 million acquisition by Playdom.
- Designed and developed EA Sports FB games The Godfather II Crime Rings, The Sims Social, and NBA Live!
Senior UI/UX Designer
WebReactor
Jun 2007 - May 2008 • 1 yr • Copenhagen
- Created wireframes, conducted user interviews, prototype, and HTML, CSS to help the developer to ship a high-quality product.
- Created a brand guideline and marketing materials for the soft expo.
- Created 3D animation to demonstrate mitochondria cell splitting for University of Copenhagen.
Senior UI/UX Designer
Jan 2005 - May 2007 • 2 yrs 5 mos • Dhaka, Bangladesh
- Helped planning, designing and creating an interactive full flash website with action script.
- Created wireframes, visual design, HTML, CSS for numerous client projects.
[04]
Work
/ PORTFOLIO 🖥️ 4 ⋮ 4
Work
Helping founders to ship SaaS software, mobile apps and marketing website.
Calendar audit on autopilot
CRM Co-Pilot for Medtech Sales
That Works Alongside Humans
I'm here for you, get in touch and let's create together.
If you are a fellow YC founder I would be so happy and excited to talk with you, let’s schedule a call and share our stories! If you are a recruiter and want to know more about me take a look at my resume or LinkedIn profile.
You can also find me on
