Why me?

If you're tired of your developer not knowing where to place a button, look no further. I'm a full-stack engineer who has been programming for most of my life, since I was 15 years old. I combine solid IT, development, and marketing knowledge to build products from a blank canvas to real paid users 💰.

As a self-starter, I don't expect you to tell me what to do at the granular level. I'll go ahead and gather the necessary details myself and get it done. These days, I work with TypeScript, NodeJS, React/NextJS, and AI to get the ball rolling fast.

I started as a backend developer, but over the years, I transitioned to full-stack development. I like architecting the backend, tinkering with databases, setting up API endpoints, and then implementing the frontend with React and Tailwind 📈.

Although I'm based in 🇪🇺 Europe, I have 10+ years of proven remote work experience with 🇺🇸 US companies. Different time zones can help you perform your job more effectively.

My job is to solve problems with technology

I'm a T-shaped person. My primary expertise is in backend software development and building things fast. At the same time, I'm a full-stack engineer with a strong focus on growth and business problems. I like marketing as it forces you to understand why you're building things.

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Things I can help you with:
  • Quickly building MVPs and SLCs.
  • Iterating and growing your established product.
  • Integrating AI into your product and/or company.
  • Solving scalability and performance problems.
  • Working on technical SEO planning and execution.
  • Business tools automation and optimization for high ROI.
  • Managing your IT as a part-time tech lead/CTO.
...or be your next-best hire as a Growth Engineer

Case Studies

Here are some examples of my remote work in recent years.

HubSpot

Senior Software Developer at HubSpot

At HubSpot, I worked in a vast enterprise environment with thousands of colleagues to drive innovation for hundreds of thousands of customers worldwide.

  • Helped build and shape new features oriented towards intent and data gathering, unlocking customer value and optimizing CRO.
  • Built large portions of Buyer Intent and Research Intent products, demonstrating the ability to scale and deliver on complex products.
  • Maintained speed and adaptability while staying deeply customer-focused.

HeroTofu

Founder of HeroTofu

Developer-friendly marketing tools built to solve my own needs and help other developers.

  • Created the project from scratch and turned it into a profitable business.
  • Competing in the established business-to-prosumer market.
  • Expanded the user base from 0 to thousands of happy customers.

Clearbit

Senior Growth Engineer at Clearbit

At Clearbit, I worked with the Growth team to acquire more customers. We found PLG (product-led growth) to be the most effective approach.

  • Worked with the Growth team to optimize conversions and the sales funnel.
  • Supported PLG motion and built free products to drive more revenue into the pipeline. Generated hundreds of thousands of dollars in revenue.
  • Optimized other people's work by creating efficient tools, add-ons, and browser extensions. Worked on sales enablement to boost outreach performance.

StatsGlitch

Founder of StatsGlitch

Throughout my career, I have been passionate about analytics and data. However, I was surprised that people weren't using them to gain more insights about their businesses. StatsGlitch's main offerings are SEO alert tracker and real-time Google Analytics alerts.

  • Created the project from scratch and turned it into a profitable business.
  • Expanded the user base from 0 to hundreds of happy customers.
  • I use it myself every week.

Toptal

Senior Growth Engineer at Toptal

At Toptal, I did a lot of automation work to increase my colleagues' productivity and business ROI.

  • Established a scalable leads generation platform to boost the sales process, combining many steps into one.
  • Built many different dashboards for better business insights.
  • Automated commonly used tools to make work more efficient.
  • Replicated and integrated 3rd party APIs & products.

CV Keskus

Lead Developer & Data Scientist at CV Keskus

At CV Keskus, I worked closely with the CEO to better understand users and business opportunities.

  • Implemented lots of analytical tools to understand a user's journey.
  • Optimized funnels with A/B and standard testing.
  • Suggested and fixed various project performance problems.
  • Helped to optimize the workflow for the IT department.

PR

CTO of Media Monitoring Tool

I planned and built a scalable scraping system capable of monitoring the entire country's media.

  • Handled technical planning and preparation.
  • Built a scalable system to crawl an unlimited number of sites.
  • Implemented high-performance keyword monitoring for specific terms and their combinations.
  • The core advantage was near real-time subscriber notifications.

Director of Engineering
Rebecca Yang
HubSpot Director of Engineering
I cannot recommend Arminas Zukauskas highly enough. At both Clearbit and HubSpot, I witnessed his exceptional talent as both an engineer and team member. Arminas was instrumental in developing and launching our extremely successful Clearbit Weekly Visitor Report as part of our growth engineering team. After we were acquired by HubSpot, he transitioned from growth engineering to software engineering, where he went on to build large portions of Buyer Intent and Research Intent, demonstrating his ability to scale and deliver on complex products. What sets him apart is his incredible speed and remarkable adaptability. He demonstrates incredible ownership and craft in everything he touches, staying deeply customer-focused while bringing empathy and collaboration to every interaction.


Head of Growth at Clearbit
Brian Hemeryck
Head of Growth at Clearbit
We worked very close together for 5+ years, on teams of 3 people to teams of 100s of people. Hands down he is the best product engineer I have ever worked with.
  • Arminas can do pretty much anything, and if for whatever reason he can't, he will learn and figure it out in such depth that he becomes an expert in that area.
  • Highly knowledgeable and big user of developer tools like AI etc – what's better is he shares the best of those tools and knowledge with his colleagues.
  • Full stack, who can work anywhere, but extremely strong in optimisation, speed, making complex problems simple, cost saving, scaling, and innovative ideas for MVPing new features and or products.
  • Extremely fast, without sacrificing quality.
  • Humble, learner, resourceful, and an excellent communicator (especially async - always presents perfect PRs making them so easy to review).
  • Cares so much about delivering a great product for both the company and the end user: if something breaks regardless of if he worked on it or not he will jump on it, and he will jump in to assist where is needed for crunch times.
  • Extremely well rounded: understands marketing, sales, making money (ask about his side businesses but he will be modest), and business in general.
  • To the previous point, he is not just an engineer, but a product and growth engineer - you don't need a product manager or team lead hand holding him. Give him a loosely defined project and he will get it done to 95% of what is needed, and then be able to apply the final feedback/polish easily.
  • He will be the best ROI engineer you will ever hire or work with.


Co-founder at Galactic Fed
Irina Papuc
Co-founder at Galactic Fed, Growth Marketing Agency
I had the pleasure of managing Arminas during his time on our marketing team at Toptal, and I can confidently say he was one of the most exceptional engineers I've worked with. What set him apart wasn't just his technical expertise, but his remarkable ability to consistently deliver high-quality work with minimal oversight. Arminas approached every project with a level of self-motivation that made my job as his manager genuinely enjoyable. He had an innate ability to understand requirements, anticipate potential challenges, and deliver solutions that exceeded expectations. His work was always thorough, well-thought-out, and completed on time. Any organization would be fortunate to have Arminas on their team. He's the rare combination of technical excellence, professional maturity, and personal integrity that every manager hopes to find.


Can we work together?

I believe so!
I'm open to discussing projects of all sizes.
But I bring the most value to PLG-focused companies or those looking to adopt PLG.