Владимир

Tereshonok Volodymyr
Tech Lead | CTO | Software Engineer
📞 [open contact info](look above in the "contact info" section) 🌐 LinkedIn
✉ [open contact info](look above in the "contact info" section) 🌐 GitHub

SUMMARY
I’m a technical leader with 8+ years of experience driving the full lifecycle of product
development — from zero to MVP to scale. I specialize in designing scalable, resilient web
architectures using Next.js, TypeScript, and Node.js, while aligning engineering execution
with business vision.
As a hands-on leader, I’ve built and grown cross-functional teams, defined long-term
technical roadmaps, and shipped platforms in fintech, healthcare, and e-commerce. My
approach combines strong product intuition, clean developer experience, and a high-
performance engineering culture. I focus on velocity without sacrificing quality, and I bring
clarity to systems, code, and teams.

KEY COMPETENCIES
Frontend Backend Managment/Others
Languages Languages
Manage
JavaScript Node.js
TypeScript Git, Github, Bitbucket,
Go(golang)
Jira, Confluence,
Trello, Slack, ClickUp,
Layout Frameworks Agile, SCRUM, Kanban
HTML, CSS, Gulp, SASS, Express.js, Nest.js
LESS, SCCS, Tailwind Theory
Databases Web/Design Patterns
React Stack MongoDB, PostgreSQL
System Design
React, Next.js, SOLID, KISS, DRY
Redux, Mobx, Zustand, API
Microservices Architecture
Jest, React Testing Library, RestApi, GraphQL, gRPC
Storybook
SubTech/DevOps Others
Docker, Sequelize Figma, DrawIO
Vue Stack
Nginx, Apache, PM2
Vue.js,Nuxt.js, Vuex
RabbitMQ, Kafka, Redis
CI/CD, Swagger, Postman

LANGUAGES
Ukrainian - Native
English - B2

PROFESSIONAL EXPERIENCE
Company | Project | Domain

L3Team | L3Team | IT-tech July 2025 - Current

CTO
Directed the end-to-end technology strategy and analytics vision for a global platform, overseeing its evolution
from concept to large-scale production deployment. Defined the organization’s technical roadmap,
architectural principles, and innovation strategy to align engineering execution with business growth and data-
driven decision-making. Built a cross-functional analytics infrastructure enabling real-time insights, predictive
modeling, and strategic process optimization across departments.
Achievements
Orchestrated the creation of a unified analytics architecture, integrating data pipelines, dashboards, and AI-driven
insights to power business intelligence and operational efficiency.
Defined and implemented global technology governance, standardizing engineering practices, security, and
architecture reviews across all product lines.
Led multi-team coordination across product, data, and infrastructure units, ensuring consistent delivery,
performance, and scalability of mission-critical systems.
Introduced data-driven strategy frameworks, enabling leadership to make evidence-based product and market
decisions.
Drove modernization initiatives, transforming legacy systems into modular, cloud-native, and event-driven
architectures.
Cliniphai | Athena | Healthcare November 2024 - July 2025

Tech Lead
Directed the end-to-end creation of a next-generation healthcare platform, leading it from concept to MVP
launch. Defined technical vision, architecture, and delivery strategy, ensuring scalability, compliance, and
alignment with business goals. Built a modular, maintainable frontend ecosystem with React, Next.js,
TypeScript, and Tailwind CSS, integrated seamlessly with backend services and real-time monitoring systems.
Achievements
Spearheaded platform development from scratch, delivering a production-ready MVP under aggressive timelines.
Architected real-time monitoring interfaces, improving operational visibility and platform stability.
Established a reusable, accessible UI component library, accelerating feature delivery and improving UX
consistency.
Drove architectural decisions that enhanced system performance, modularity, and long-term maintainability.
Ensured all technical implementations met product objectives and strict healthcare compliance requirements
(HIPAA).

OutReach | OutReach | CRM Sales June 2024 - December 2024
Tech Lead
Directed the design and implementation of a real-time UI monitoring system to capture user behavior,
improve engagement, and deliver actionable insights. Architected a scalable Management Ecosystem to
streamline operations and boost efficiency. Led the development of new system components from
concept to deployment, ensuring all features aligned with business goals, UX standards, and
performance benchmarks. Guided the frontend team in adopting modern tooling and best practices to
maintain code quality and velocity.
Achievements

Developed and implemented a UI monitoring system that provides real-time insights and supports user
engagement.
Architected a robust Management Ecosystem, which increased operational efficiency.
Leveraged advanced technologies to optimize processes, boosting code quality and team productivity.
Launched features that improved user satisfaction, enhancing the overall platform experience.

Flyfish | Flyfish | FinTech May 2024 - Dec 2024
Senior Frontend Developer
As a Senior Frontend Developer, I led the design and development of core fintech interfaces using React,
Next.js, TypeScript, and Tailwind CSS. I collaborated closely with product managers, backend engineers, and
designers to deliver high-quality, accessible, and responsive user experiences. My role included defining
reusable UI patterns, improving application performance, and ensuring maintainable architecture through
modular code and design system principles.
Achievements
Designed and shipped a scalable management ecosystem, improving operational efficiency by 30%.
Contributed to the rollout of an advanced inventory system, reducing operational waste by 20%.
Integrated modern frontend practices and tooling, improving code quality and developer velocity.
Launched UX-driven features that led to a 25% increase in user satisfaction and engagement.

ZapleoSoft | Pasijou | Food and Beverage Oct 2022 - Apr 2024
Tech Lead
Directed the full lifecycle development of a food & beverage management platform, from architecture to
production deployment. Designed a scalable system using React, Node.js, and PostgreSQL, delivering robust
operational tools for inventory, order tracking, and performance monitoring. Led a multidisciplinary team,
established coding standards, and ensured delivery aligned with business objectives.
Achievements
Architected and launched a management ecosystem that increased operational efficiency by 30%.
Developed a real-time inventory tracking system, reducing waste by 20%.
Introduced new user-facing features that boosted satisfaction and engagement by 25%.
Mentored developers, led code reviews, and implemented best practices to maintain high engineering quality.

StartUp | SailnSell | High-End Retail Jun 2023 - Apr 2024
Chief technical officer (CTO)
Founded and led the technical development of a high-end retail platform from concept to production.
Designed and implemented the full stack architecture using React, Next.js, Node.js, and cloud infrastructure.
Oversaw all technical decisions, from infrastructure and security to UI/UX design, ensuring scalability,
performance, and a premium customer experience.
Achievements
Built the entire platform from scratch, delivering a production-ready system with a seamless user journey.
Led a full redesign that increased user engagement by 25%.
Introduced a new feature set that improved customer satisfaction and retention.
Streamlined CI/CD and deployment pipelines, reducing downtime and improving system stability.

Jito | Kings-Palace | Travel Technology Aug 2023 - Oct 2023
Senior Full Stack Developer
Worked on re-architecting key parts of the travel booking platform focusing on stability, performance, and
user experience. Collaborated with cross-functional teams to ship reliable features on a fast release cycle.
Achievements
Launched the platform end-to-end, leading to a 25% increase in user engagement within the first quarter.
Delivered a custom feature set that improved customer satisfaction and retention.
Set up robust CI/CD pipelines and automated deployments, significantly reducing downtime and
speeding up release cycles.

ZapleoSoft | ZapleoSoft | Data Analytics May 2022 - Oct 2022
Senior Full Stack Developer
Led development of internal analytics tools using React, TypeScript, Node.js, and PostgreSQL to
support real-time data monitoring and reporting across business units.
Achievements
Implemented dynamic dashboards with live data streams and custom filters, enabling faster and more
accurate decision-making.
Optimized data ingestion pipelines and backend queries, improving processing speed by 25% and
increasing data accuracy by 20%.
Designed a clean, modular UI with Tailwind CSS and improved onboarding UX, leading to a 15% increase in
user adoption.
ZapleoSoft | Yantar | E-commerce Feb 2020 - May 2022
Full Stack Developer

Built high-performance e-commerce features with React, Node.js, and PostgreSQL. Optimized UX and page
load speed, contributing to a 30% increase in sales. Focused on scalability and smooth user flows.

ZapleoSoft | Levaromat | E-commerce May 2018 - Feb 2020
Full Stack Developer
Built and maintained e-commerce platforms with React, Node.js, and MongoDB. Integrated Stripe and
PayPal, boosting checkout conversion by 25%. Improved performance, modularized legacy code, and added
real-time order tracking via WebSockets.

SoftServe | Internship | E-commerce Jan 2018 - Aug 2018
Internship

EDUCATION & CERTIFICATIONS EXTRACURRICULAR ACTIVITIES
Dnipro University of Technology
Bachelor’s in Computer Science Training course delivery / Mentoring
2018 - 2022 Apr 2024 - Present
Master’s in Computer Science
2022 - 2023