Олег

Oleg Bednarsky
LEAD FRONTEND/NODE.JS ENGINEER
React · TypeScript · Frontend architecture · Full-stack experience
[відкрити контакти](див. вище в блоці «контактна інформація») | bednarsky.web.app
Remote Worldwide | B2B Contracts

PROFESSIONAL SUMMARY

Lead Frontend/Node.js Engineer with 15+ years of experience building and modernising production web
applications across FinTech and IoT. Deep expertise in React, TypeScript, JavaScript and frontend
architecture, with practical Node.js full-stack experience. Own complex initiatives from design to production,
guide technical decisions, mentor engineers and collaborate across product, design, backend, QA and
DevOps.

CORE TECHNOLOGIES

Frontend: React, TypeScript, JavaScript, Redux, Next.js, Gatsby, HTML5, CSS3, Sass
Architecture: Frontend architecture, reusable UI components, design systems, Storybook, state management,
performance optimisation
Testing: Jest, React Testing Library, Cypress, unit, integration and end-to-end testing
Backend & Data: Node.js, Express, GraphQL, REST APIs, PostgreSQL, MongoDB, Firebase
Delivery: AWS, Docker, Webpack, Jenkins, Travis CI, GitHub Actions, CI/CD
AI-Assisted Engineering: Hands-on use of GitHub Copilot, OpenAI Codex, Claude, Cursor and MCP-based tooling over
the past year.

PROFESSIONAL EXPERIENCE

LendInvest plc
Senior Frontend/Node.js Engineer
September 2019 - Present | London, UK (Remote)

Publicly listed UK FinTech specialising in property finance, with £3.82B in assets under management and £1.44B in annual
loan originations in FY2026.

• Technical leadership: Own frontend technical direction and end-to-end delivery across customer mortgage
portals, broker applications, internal underwriting tools and lending operations platforms.
• Architecture: Design maintainable React and TypeScript architectures using reusable UI components,
consistent state-management patterns and clear API integration boundaries.
• Mentoring: Provide ongoing mentorship to several engineers through code reviews, technical guidance and
support with implementation decisions, helping maintain consistent engineering practices.
• Broker experience: Helped redesign and evolve the LendInvest Mortgages Portal, which received 97% of
short-term lending applications in the second week of December 2023.
• Performance: Contributed to portal performance and workflow improvements that reduced application-saving
time by 89%, making the application process more responsive for brokers.
• Operational efficiency: Developed frontend workflows for lending and underwriting as part of a broader
technology transformation that increased Buy-to-Let (BTL) underwriting productivity by 50% and reduced
average BTL origination costs by 60% in FY2025.
• Engineering quality: Improve frontend reliability and maintainability with reusable Storybook components,
Jest, React Testing Library, Cypress, refactoring and CI/CD improvements.

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PROFESSIONAL EXPERIENCE - CONTINUED

Netronix IoT
Senior Frontend / Node.js Engineer
September 2017 - March 2019 | Philadelphia, PA, USA (Remote)

US-based IoT company developing Acheron for cloud-based device monitoring, management and analytics.

• Developed production web applications using React, Redux and Node.js, connecting cloud-based IoT
services with interfaces for remote device monitoring and management.
• Engineered frontend and backend integrations for high-frequency data updates and API requests, balancing
client responsiveness, backend capacity and system reliability.
• Built data visualisations and reusable UI components that made connected-device information accessible for
remote monitoring and operational decisions.
• Delivered features across frontend and backend boundaries, including API integration, production debugging,
testing, deployment and ongoing platform improvements.
• Improved application structure, component reuse and integration patterns as the platform evolved across IoT
products and commercial and industrial use cases.

Svitla Systems
Senior Frontend Engineer
November 2014 - April 2017

Global software engineering company serving international clients.

• Delivered responsive client and product applications using JavaScript, React, HTML, CSS, Sass, Less, API
integrations and frontend build tooling.
• Collaborated with design, backend, QA and client stakeholders on architecture, reusable patterns, code
quality and maintainability in distributed teams.

M&BT
Frontend Engineer
March 2012 - August 2014

Software development company delivering web applications and custom digital solutions.

• Developed responsive business websites and web applications using JavaScript, HTML, CSS, template
engines and PHP-based environments.
• Integrated frontend functionality with backend templates, APIs and content management systems, improving
browser compatibility and performance.
• Regularly mentored several developers alongside hands-on frontend delivery, supporting their technical
development and day-to-day implementation work.

Independent clients
Freelance Web Developer
Before 2012

• Designed and developed websites from requirements through frontend implementation, server-side
integration, deployment and ongoing support.

LANGUAGES

English: C2 | Ukrainian: Native

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