Valentyn Danilichev

Working as a full-stack engineer across multiple projects, contributing to technical design, implementation, estimation, and delivery while helping improve engineering practices across the company.

• Contribute across mobile, web, and backend systems, working primarily with React Native, React, TypeScript, and Go.
• Help drive the adoption of spec-driven development practices across teams, improving requirements clarity, implementation consistency, and collaboration.
• Collaborate on a reusable Nx monorepo starter template for company projects, with shared frontend/mobile tooling and a Go backend foundation to standardize project setup and accelerate delivery.
• Participate in technical interviews and candidate evaluation.
• Contribute to architecture decisions, technical estimation, code reviews, and delivery across different product domains.

Supporting engineering teams through developer evaluation, technical problem-solving, and candidate interviews.

• Evaluated and supported software engineers.
• Helped resolve complex technical issues across projects.
• Interviewed engineering candidates while continuing hands-on technical work.

Built mobile, web, and backend products, estimated projects, mentored engineers, and led technical delivery across multiple domains.

• Led and contributed to mobile automation, Web3, web, farm-management, and workforce-matching products.
• Developed a solution for executing ML service instructions on Android devices via ADB from a remote server.
• Built a web application from scratch to release and organized a small engineering team.
• Implemented offline-first workflows, Bluetooth integrations, performance improvements, complex business logic, and CI/CD enhancements.

Built mobile and web applications from product requirements through release and contributed to project estimation.

• Built PolyTechnician from scratch to release, including an offline-first solution.
• Built Perfi, an open-source React Native application for personal finance.

An EdTech platform that turns classrooms into simulated mini-economies, helping students learn financial literacy through jobs, paychecks, rent, and marketplaces while giving teachers tools to manage the experience.

• Role: Team Lead, Mobile Developer.
• Set up the mobile application and its core architecture.
• Implemented key functionality including authentication, push notifications, analytics, and other core product features.

A distributed automation platform that allows users to define scenarios that are processed by an ML backend and executed on remote Android devices. The system required reliable remote communication with Android phones and background execution of device-level operations.

• Role: Team Lead, Full Stack Developer.
• Designed and implemented a solution for executing ML service instructions on Android devices through ADB from a remote server.
• Solved a technical problem around reliable background execution that had previously blocked the team.

A production mobile application for a UK-based agricultural startup, designed to support farm operations in environments where connectivity may be unreliable. The app integrates with external Bluetooth hardware and handles synchronization, offline workflows, data visualization, and complex domain logic.

• Role: Senior React Native Developer.
• Implemented offline-first workflows and synchronization mechanisms.
• Integrated external Bluetooth devices through native Java modules.
• Worked on performance optimization, charts, optimistic UI, complex business logic, and CI/CD improvements.

A workforce marketplace that connects customers with temporary workers. The product spans mobile and web applications together with backend services and required ongoing development of an existing production system.

• Role: Tech Lead, Full Stack Developer.
• Helped restore the project after a COVID-related pause and bring development back to an active state.
• Refactored legacy areas, reduced technical debt, and delivered new product functionality.
• Worked on infrastructure and operational cost optimization.

A travel-focused mobile application that lets users capture photo stories while travelling and display them geographically as part of their route. The product combines maps, media, geolocation, and background location tracking to build a visual record of a journey.

• Role: Team Lead, Mobile Developer.
• Architected the MVP and translated product requirements into the initial technical solution.
• Implemented geolocation-based algorithms, map and media functionality, and background location tracking.
• Led technical decisions for the mobile product.