Nikita Lavreniuk.

Senior Full-Stack Developer

Mainflow · Oct 2025 – Feb 2026

• —Built YourPath platform — an AI-driven platform that provides tailored roadmap for seniors to find ideal communities for their needs and circumstances
• —Integrated Retell AI and Twilio for real-time voice intake flows
• —Implemented PostGIS geographic matching for location-aware recommendations
• —Automated PDF report generation via n8n workflows
• —Wired up SMS notifications, JWT auth, Resend email, and Klaviyo marketing flows

Senior Full-Stack Developer

Dashboardly · Jan 2025 – Oct 2025

• —Sole developer of a SaaS TikTok analytics platform built with Angular and NestJS
• —Delivered 5 analytics modules covering creator performance, audience insights, and trend analysis
• —Designed P&L, Cohort, and Sales dashboards for business decision-making
• —Built NestJS backend with Prisma ORM and PostgreSQL for scalable data management

Frontend Engineer

DoorFeed · Aug 2024 – Jan 2025

• —Built a dashboard visualising 50k+ property data points with real-time filtering
• —Integrated MapBox for geospatial property search and map interactions
• —Wired up ChatGPT API for AI-assisted property insights
• —Wrote and optimised complex SQL queries for data aggregation
• —Conducted code reviews and maintained frontend quality standards

Specsavers

Valtech · Specsavers · Mar 2022 – Aug 2024

• —Led Algolia search migration — autocomplete, faceted filtering, and relevance tuning
• —Integrated Contentstack CMS for flexible content management across storefronts
• —Optimised LCP and Core Web Vitals, achieving measurable performance improvements
• —Enforced WCAG 2.1 AA accessibility compliance across all new features
• —Presented progress and demos to senior stakeholders and product owners

Mitchell & Butlers

Valtech · Mitchell & Butlers · Mar 2022 – Aug 2024

• —Migrated All Bar One, Harvester, and Miller & Carter from Nuxt 2 to Nuxt 3
• —Adopted MACH architecture (Microservices, API-first, Cloud-native, Headless)
• —Structured codebase into domain-based modules for maintainability at scale
• —Set up Docker environments and CI/CD pipelines for streamlined deployments
• —Established a testing strategy covering unit, integration, and E2E layers

ASML

Valtech · ASML · Mar 2022 – Aug 2024

• —Delivered a Vue 2 + Sitecore job search feature used by thousands of applicants
• —Refactored legacy components to reduce initial load time significantly
• —Collaborated with stakeholders in demos and iterative feedback sessions

Ericsson

Valtech · Ericsson · Mar 2022 – Aug 2024

• —Built an innovation articles platform using React and Gatsby for Ericsson
• —Implemented GraphQL data layer for efficient content fetching and caching
• —Created performance-optimised dynamic pages with server-side rendering

Frontend Developer (Part-time)

Northcott Global Solutions · Feb 2023 – Aug 2023

• —Built a React CRM platform for 24/7 international emergency response and risk management
• —Reduced load times from 1–3 seconds through memoisation and React Query caching
• —Implemented OAuth2 authentication with role-based access control
• —Developed custom hooks for reusable data-fetching and UI logic

Frontend Developer

Broxbe · May 2020 – Mar 2022

• —Developed the Exerfly fitness platform with Nuxt 2, GraphQL, and video training modules
• —Built Austin & Blake ring customisation tool with a recommendation algorithm
• —Integrated Decap CMS for client-managed content across multiple projects

Frontend Developer

WarmDevs · Nov 2019 – May 2020

• —Delivered bespoke websites and web applications for various clients
• —Integrated Firebase authentication for secure user management
• —Automated client workflows with Zapier integrations