Erik

Erik Vaksiutenko Software Engineer
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section) Vinnytsia, Ukraine

[open contact info](look above in the "contact info" section) Ukraine 15.07.1998 @byver

About me

I am an open-minded and adaptable person, always eager to learn and ready to take responsibility for my
work. I stay calm under pressure and truly enjoy achieving great results alongside a strong team. As a
Software Engineer and Tech Lead, I bring these qualities into building scalable, high-load distributed systems.
My technical expertise spans across modern backend development and complex infrastructure orchestration,
where I focus on solid system design, process automation, and mentoring developers to build reliable
products.

Professional Experience

Tech Lead & Senior Software Engineer 2026 – Present
BillTech
As a Team Lead in a dynamic FinTech startup, I directed a cross-functional
engineering team responsible for developing secure, scalable platform solutions. I
focused on establishing robust development processes, mentoring engineers, and
architecting systems capable of handling complex transactional loads. Successfully
balanced the rapid delivery requirements of a startup environment with the need
for long-term architectural stability, significantly improving both team velocity and
product reliability.

Senior Software Engineer 2022 – 2026
12Go (Part of Travelier Group)
Engineered a high-performance fuzzy search engine: Designed and implemented
•

advanced fuzzy search algorithms using Elastic Stack (ELK) to efficiently process
massive volumes of complex transportation and routing data, significantly
improving query accuracy and user experience.
Led enterprise-scale data migration: Spearheaded the extraction, transformation,
•

and migration of large-scale datasets from 12Go’s legacy infrastructure into the
centralized systems of the Travelier global corporation.
Built scalable data pipelines: Developed robust backend services and data
•

processing pipelines utilizing Go, Python, Symfony Framework, and MySQL
within the Data Team, ensuring high availability and seamless data flow across
internal services via REST APIs.
Managed containerized infrastructure: Orchestrated deployment environments
•

using Docker, maintaining system reliability and accelerating development cycles
for cross-functional data initiatives.

I developed an internal AI for the company, training and deploying the model to
•

production. It was capable of handling tasks across various departments, thereby
reducing issue resolution times and the workload on staff. I also configured
workflows for the system and auxiliary agents to facilitate the use of more
advanced cloud-based models from Anthropic when necessary.

Full stack developer 2021 – 2022
Cola LTD
Engaged in the development of casinos, sportsbooks, MTS, as well as various
services and microservices for projects

Full stack developer and DevOps engeneer 2019 – 2021
Starway/PremiumCall
Responsible for the end-to-end development of new scalable platforms, including a
custom cryptocurrency exchange tailored for the company's native token and a
dedicated advertiser marketplace (Tagio). Simultaneously managed the maintenance
and optimization of legacy infrastructure, ensuring the stability and high
performance of an existing high-traffic affiliate marketing product. Successfully
balanced ongoing technical support with greenfield development, focusing on
robust system architecture and business logic integration across both FinTech and
AdTech domains.

PHP developer and system administrator 2016 – 2019
Sipius
I was involved in creating websites from scratch on Laravel and Yii2, also
supported work projects on CMS Joomla, WordPress, Bitrix, OpenCart. Quit this
job due to the closure of the company.

Freelance 2015 – 2016
Engaged in the development of web sites and simple native applications on the Qt
Framework

Education

Computer engineer 2015 – 2019
Vinnitsia Technical College

System administrator 2015 – 2016
Cisco Network System Academy

Skills

Programming languages: Frameworks: Technologies:
PHP, SQL, JS, TS, Python, GO, Laravel, Yii2, CakePHP, NodeJS, Docker, Vagrant, Git,
CSS, HTML, C#, C++ Codeigniter, Symfony, Django, RabbitMQ , Redis, Clickhouse,
Qt (C++) NAT (JetStream), MySQL,
CMS Engines: VueJS, ReactJS PostgreSQL, Sqlite, Nginx,
OctoberCMS, Joomla, Bitrix, Apache2, K8S, FluxCD,
OpenCart, WordPress, Modx AI Tools Terraform
Claude Code, Gemini, ChatGPT,
Independently trained models

Languages

Ukrainian Russian English
native native B1