Олександр

Oleksandr Mostovyi
Phone: [open contact info](look above in the "contact info" section)
Email: [open contact info](look above in the "contact info" section)
Profile: [open contact info](look above in the "contact info" section)
Github: github.com/mova-ITS

Profile
☑ 20+ years in software engineering across Perl/LAMP, JS/Node.js, and modern front ends
☑ Author of cjtut.uk — bilingual (Eng/Ukr) Cangjie dictionary, tutor course, and color index; static
SPAs on CF, Rust engine in the browser (WASM modules)
☑ Perl/LAMP developer since the 1990s; Node.js / Express / REST backend work
☑ Team / Tech Lead for distributed US/EMEA/APAC teams
☑ Strong in refactoring, debugging, legacy modernization, and PoC delivery
☑ Agentic AI engineering (Cursor, Copilot, etc.); AiE™ (ARTIBA) & Technical Writer (TWHQ)
☑ Rust for language-tooling: bidirectional Cangjie dictionary (packed binary + WASM), stroke-colour
SVG pipeline, small shared CLI crate — shipped in a live site

Skills Summary

Core Engineering
• Languages: JS/TS, Perl (2003–2025), Rust (CLI, WASM, packed .bin), SQL
• Frontend: React (16–19), Angular (2–15), RxJS, Tailwind CSS, HTML5, CSS3, vanilla JS SPAs
• Backend & APIs: Node.js, Express, Perl (CGI, mod_perl, Mojo/Mouse), REST/JSON, ORMs
• Databases: MySQL, Firebase, SQLite, Redis
• Testing: Jest, Jasmine, Karma, Cypress, Testing Library, Perl test tooling
• Cloud / DevOps: AWS basics, CF (Workers/Pages), Docker, Podman, GitHub, Google Console
• AI tooling: Cursor, VS Code / GitHub Copilot, Microsoft Copilot Studio

Specialties
• SPA architecture & performance optimization
• Legacy system refactoring and modernization
• Agentic / AI-assisted quality analysis, test generation, and delivery tooling (PoCs)
• Parsing, scraping, log processing, automation (Perl/Node/Rust)
• State management (RxJS, Redux-like patterns, custom stores)
• PoC delivery, prototyping, UX-sensitive development
• Technical documentation & knowledge base management
• Bilingual teaching UI: learner’s dictionary, courses

Tools
Git, Webpack, Vite, Nx monorepo, pnpm, curl, Postman, Jira, Confluence, VS Code, Cursor IDE

Work History

Dev.Pro, (Ukraine – Remote) Dec 2025 – Aug 2026
Project: AI-assisted engineering PoCs (fintech context; NDA — general description only)
Role: Senior Software Engineer, Full-time
Tool stack: Cursor, VS Code Copilot, Microsoft Copilot Studio, Power Platform Custom
Connectors, REST/JSON, Perl legacy backend, JS/TS tooling
Achievements: 1. Legacy code-base quality agents — agent-style flows to analyze quality signals

and surface actionable findings
2. Unit-test generation & coverage uplift, to the extent the legacy structure allows
3. Development acceleration via API stubs, proto/API reverse-engineering
support, and related integration helpers
Responsibilities: • Autonomous PoC design & delivery under security-constrained visibility of core
infrastructure
• IDE-level AI assistance (Copilot) and cloud orchestration (Copilot Studio) for
workflows & automated tests
• Safe integration with Perl legacy services via REST and Custom Connectors
Team: PoC / autonomous (core team security boundaries)

Sociala, (USA – Remote) Jan 2025 – Aug 2025
Project: Sociala.com, hybrid/SPA
Role: FE Team Lead, Independent Contractor
Tool stack: React 19 (custom hooks, RxJS v.7), Tailwind v.3, GitLab, Jira, Figma
Achievements: 1. Hybrid application environment setup: hydrated Twig/React SPA
2. Implemented a new version of the SPA
3. Introduced non-standard solutions for hybrid-stack integration
Responsibilities: • Hard-parts PoCs
• US detailing and prioritizing
• Development & PR code reviews
Team: 5

ABCloudz, (USA – Remote) Feb 2024 – Oct 2024
Project: Migration Studio, SPA
Role: FE Team Lead, Independent Contractor
Tool stack: React 18 (custom hooks, RxJS), Tailwind CSS, GitLab, TFS, Figma
Achievements: 1. Planned and directed proprietary framework development
2. Introduced and used successfully TDD (coverage ±90%)
3. Developed a set of custom style guides
Responsibilities: • Prototyping and documenting solutions
• Producing PoC demo SPAs and their parts
• US detailing and prioritizing
• MRs live code reviews
• Mentoring junior team members
Team: 5

Znuny Group, (Freelance) Jul 2023 – Nov 2023
Project: OTRS (Ticketing system), SSR
Role: Full-Stack Engineer (Perl/JS/Node.js), Independent Contractor
Tool stack: Perl (OTRS/Znuny), Node.js (tooling), JavaScript, HTML templates
Achievements: 1. Exhaustive analysis of UI-related (Perl) modules and JS/NPM inclusions
2. Snyk-based NPM vulnerability fix checklist
3. Semi-automated tool development for updating/patching JS/UI parts
Responsibilities: • UI structure analysis
• Node.js scripting/tooling
• Reporting (tool) development
Team: 3

REW Consulting, (USA – Remote) Sep 2021 – May 2023

Project: BSP Telecom portal: FB & WA messaging sub-system
Role: Key Front-end Developer, Independent Contractor
Tool stack: React 18 (hooks, react-icons, React-RxJS), Tailwind CSS, Docker
Achievements: 1. SVG widgets integration into BSP portal
2. META BSP UI replica creation and support (on-premises/K8s and cloud)
Responsibilities: • Aligning tech stack with customer requirements
• Producing PoC demo SPAs and their parts
Team: 10

REW Consulting, (USA – Remote) Sep 2021 – May 2023
Project: BSP Telecom portal: Short Number SMS messaging sub-system
Role: Sr. Front-end Developer, Independent Contractor
Tool stack: Angular 12, Bootstrap, Figma, Docker, GitLab, Jira, Teams, Postman
Achievements: Seamless legacy code base upgrading, refactoring and occasional deep rewriting with
proper 3rd-party library replacement using TypeScript and a newer Angular version.
Responsibilities: • New UI blocks/widgets development
• Bug fixing
• Code review
• US detailing, estimation
• New feature research and prototyping
Team: 6

Softserve Inc., Ukraine Jan 2021 – Aug 2021
Project: Hospital CRM System
Role: Sr. Front-end Engineer, Independent Contractor
Tool stack: React 17 (hooks), Nrwl/Nx, Kendo UI, Figma, Jira, Confluence
Achievements: 1. Nx monorepo: both libs & apps development
2. Successful PoC delivery while working closely with architects and product
owners
Responsibilities: • US detailing, task estimation (based on previous SW UI)
• UI library elements development/replication (monorepo)
• Code review
Team: 7

EPAM Systems, Ukraine Apr 2019 – Feb 2020
Projects: 1. Intranet Insurance SPA (multi-page reactive forms)
2. Online Retail Promotion platform
3. Global News Application Widget library rewrite (Electron)
Role: Team Lead, Independent Contractor
Tool stack: Angular 8, Material (custom), lit-html, TypeScript, Jira
Achievements: Implementing RxJS Subject as efficient state-management service for multi-page
wizard-like highly customized (Angular Elements) form SPA.
Responsibilities: • SPA prototyping and authoring
• Team backlog management and task detailing
• Project documenting and KB management
Team: 8

Softserve Inc., Ukraine Aug 2017 – Dec 2018
Projects: 1. Hospitality Service Provider Admin SPA (AngularJS)
2. NAS storage cleaning tool and control UI (Node.js)

Role: SW Engineer, Independent Contractor
Tool stack: Node/Express, AngularJS 1.x, Material, Google Maps API, TeamCity, Jira
Achievements: Performance optimization of Admin UI built on top of Google Maps API.
Responsibilities: • New feature implementation: extending functionality (marker, area, etc.)
• Unit-testing, refactoring and bug-fixing
• 3rd-party libraries update
Team: 7

Career transition, Ukraine Oct 2016 – Jul 2017
Project: Freelancing
Role: Web developer
Tool stack: LAMP, MEAN / JS, front-end SPA stacks
Achievements: Career transition from LAMP to MEAN/JS/Front-end development across numerous
freelance projects of varying scale.
Responsibilities: • UI and back-end development (solo and with designers / support teams)
• Rapid UI prototyping
• Designing and implementing RESTful APIs
• SPA development
Team: Freelance / varying

Traveltek Ltd., UK Sep 2015 – Sep 2016
Project: Online Travel SaaS
Role: Offshore Contractor Developer, Independent Contractor
Tool stack: LAMP, Perl, CGI/Perl, Object Oriented Perl, DBD::*, XML, JSON, CPAN
Achievements: Optimized existing features in the Company’s Client portal template system.
Responsibilities: • API testing and extending
• API integration into outer clients’ resources
• Switching API from XML to JSON
• 3rd parties’ APIs integration into platform
• Technical writing
Team: 30

Softserve Inc., Ukraine Jan 2014 – Jun 2015
Project: Connection Broker Web-based admin UI
Role: Web Developer, Independent Contractor
Tool stack: Perl, CGI/Perl, OO Perl, MySQL, DBD::*, Net::*, XML, HTML, CPAN
Achievements: Optimized existing features in the Company’s Client portal template system.
Responsibilities: • Protocol integration (wrappers)
• API connectivity check and testing
• XML config check and testing
• Technical writing
Team: 10

Professional Certifications
• Artificial Intelligence Engineer (AiE™) — Dec 2024
Artificial Intelligence Board of America (ARTIBA)
Credential ID: 174702005
https://www.credbadge.com/credit/certified/174702005

• Technical Writer — Feb 2024
Technical Writer HQ
https://technicalwriterhq.com/wp-content/uploads/2024/02/Oleksandr-Mostovyi.pdf

• TOEFL iBT — Mar 2019
ETS
Credential ID: 7086603190126495

Education

National Metallurgical Academy of Ukraine 1989–1993
Degree: Diploma of Engineer in Automation
Area: Industrial automation (industrial microcontroller programming)

Languages
Native: Ukrainian, Russian
Foreign: English (fluent), French (basic), Chinese (basic)