Bolschakov Henri

Berlin, Germany

With over 13 years of experience in software engineering, I bring a strong and diverse technical background spanning backend and frontend development. I spent the first 6 years of my career working with PHP before transitioning to C# and the .NET ecosystem, including .NET Core. In recent years, I’ve deepened my expertise in full-stack development, and since March 2025, I’ve been working as a Full-Stack Node.js Developer at Contentful, gaining hands-on experience with modern JavaScript/TypeScript-based architectures.

Throughout my career, I’ve worked in a range of environments — from small software houses to a leading German beverage delivery company with over 20,000 employees, part of the Oetker Group. My main backend technologies include C#, PHP, Node.js, and SQL. I’ve also completed a machine learning project using Python, further expanding my technical versatility.

On the frontend side, I’ve contributed to several projects using Angular (all versions), TypeScript, and modern CSS frameworks, and I'm well-versed in the core principles of modern frontend applications.

I’ve had the opportunity to lead development teams on two occasions and would welcome the chance to step into a leadership role again. My experience spans full software development lifecycles, cross-functional collaboration, and adapting to rapidly changing environments with ease.

Experience

Software engineer

Contentful

March 2025 - Present

Senior software engineer

Flaschenpost SE

After merge with Durstexpress GmbH I was assigned to a new team called HVR. Our goal to create High Volume Recruiting tooling set and improve and speed up hiring process and candidates experience. Technologies: C#, ASP.Net core, EF Core, MS Sql, Docker, k8s, Azure services.

June 2021 - March 2025

Technical lead

Durstexpress GmbH

Technical lead

November 2019 - May 2021

Senior software engineer

Ekomi Ltd.

Technologies and frameworks: PHP 7, Symfony, MySql, Docker, Python, Fasttext, NLTK, Machine learning.

April 2018 - October 2019

Senior backend developer

Bytebrand Outsourcing AG

Exciting time with the Bybrand I spent on building backend infrastructure for e-scooters charging stations (including mobile apps Rest API + communication with charging stations). Technologies and frameworks: PHP 7, Symfony, MySql, Docker, WebSockets, Jelastic.

August 2017 - April 2018

Full stack developer

N-ix

Working at N-ix I continued improving my fronted skills. My main responsibility was the development of T-shirt designer using Angular 2(4), Fabric.Js, and Redux as state container. Technologies and frameworks: TypeScript, Angular 4, Fabric.js

December 2016 - August 2017

Full stack developer

Kindgeek Software

At this position, my main responsibility was the development of REST API for mobile applications. All projects were based on the Symfony framework. Also here I got experience with angularjs (1 ver.). Most exciting projects: AR Proactive and Cellsavers ( Puls ). Technologies and frameworks: Symfony, PHP, Angular.js, MySql, Websockets.

September 2015 - December 2016

Junior full stack developer

Zinit Solutions GmbH

As a junior developer, at the beginning, my main responsibilities were to support existing eCommerce projects based on Oxid, WordPress, Shopware, and osCommerce CMS. After I had improved my knowledge in the development stack I start to work on projects on my own. Technologies and frameworks: Php, MySql, Js, Oxid CMS, Magento, Shopware.

August 2013 - September 2015

Education

National Aviation University

Bachelor & Specialist

Communication and Information Systems Security

January 2009 - January 2013

Skills

Programming Languages & Tools

Workflow

Infrastructure
Backend Development
Mobile-First, Responsive Design
Agile Development & Scrum

Recommendations

Hennadii is really a fast learner and a doer person. He brings a lot of energy into the team and he demonstrates an impressive "can -do attitude": A challenge is never too hard for him. He knows how to get things done in a short time. He is proficient in both frontend and backend web technologies. I really recommend to work with Henna.

Dima Dobrinsky
R&D Group Manager at Comigo Ltd.

Hennadii was a pleasure to work with. And super professional. He handled heavy deadlines and techical problems admirably.

Rich Handler
CEO at AR Proactive

You can feel this gentleman`s Passion for Technology from the very first communication with him. I`ve worked with Hennadii at KindGeek. And every time when our team jump on some topic related to "What programming approach should I use here?", "How do I solve this problem ? ", "What is the best way to optimize this solution ? " - Hennadii was there to share the right ideas. Very well-behaved gentleman, with good managing skills, attention to details and the leadership mindset. And for sure, with great Algorithmic thinking.

Max Gladysh
Co-Founder of BotsCrew

Hennadii is at the top of his game. If I ever had a question about software, an experience, or troubleshooting a problem, Hennadii was the guy to go to. I feel this is because he is not only a technology evangelist, he lives it.

Oleg Kuprovskiy
CTO, Managing Partner at LedgerX

Having worked with Hennadii together on one project, I can confidently verify him as a skilled and smart developer. He is a responsible and extremely responsive person. He`s been a great colleague with extensive experience to share. Hennadii is an expert in his field.

Serhiy Yevtushenko
Software Engineer at N-ix

I had the pleasure to work with Hennadii in 3 different middle sized SW development projects as his PM/PO. What makes Hennadii an exceptional team member is his all-rounder skillet. Great communication skills, a fantastic team player, high level technical skills and a fast business understanding is rarely found at the same time in one developer and provides much more value to a project than only the sum of these parts. Whenever possible, I would love to have Hennadii again in any future project.

Marco Kundert
Offshore manager at Bytebrand Outsourcing AG

Hennadii is quite responsible person. He is a good team player who brings clean code into the project. We have been done a great work together and it brought the customer a well developed product with good quality in very short time.

Andriy Kozak
QA Test Engineer at EPAM Systems

Working with Hennadii in the same company or on the same project, is very helpful for the morale and boost of skills not only the team which he is working with but company as well. He is a high skill developer, has great ability to problem solving, an exceptional team player and, the more important, a fantastically positive person. I would definitely love to work with him again.

Oleg Kachinsky
Go Software Developer at EPAM Systems

Hennadii has excellent programming skills as well as really good soft skills. He is able to dive into complex topics really fast. He is also able to understand legacy code without complaining about the code quality. His approach for solving technical challenges is as great as his organizational skills. You can always count on him as a team member. He listens carefully to learn from other team members and is always the first when someone else is in need for help.

Sandor Farkas
Engineering Manager at Ekomi

Hennadii always fighting for personal growth.

Anton Skrypnyk
CEO at KindGeek

I had the pleasure to manage Hennadii's team for the last, and I honestly think he is a great team lead, very dedicated, and highly motivated. His technical skills are indisputable. He always came forward with good suggestions, improvements, and ideas; I only received positive feedback from his team, peers, and product and business structure.

Luca Ghersi
Head of Engineering at Durstexpress

Interests

Apart from being a web developer, I enjoy most of my time being outdoors. I like fishing, hiking, biking.