Available for work

Hello, I'm

Ilya
Alexeev

> _

Senior Full Stack Developer & Tech Lead - building scalable Java/Spring microservices, modern Angular/React UIs, and cross-platform Rust/Tauri apps.

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About Me

Ilya Alexeev

Senior Full Stack Developer & Tech Lead

5+ years building scalable Java/Spring microservices, Angular/React UIs and cross-platform Rust/Tauri apps. Currently Tech Lead on 6 parallel applications at Capgemini for the French Ministries (Division Numérique), after delivering enterprise systems for Pelayo Seguros, SFR, Deutsche Bank, Covestro, Siemens and Atos. Multilingual, hands-on, from legacy monoliths to modern microservices.

Disciplined on schedules and deliveries, flexible on the approach. Easy communication with clients, colleagues, anyone really. A bit of dry humor, always respectful, conscientious about the craft. On the side, a long-running obsession with futuristic and cyberpunk aesthetics that constantly bleeds into my game design and UI work.

On the front-end side: building modern, fluid and ergonomic interfaces tailored to real user needs, on top of Angular / React / Vue, with Tailwind CSS, modern style frameworks and the right dose of hand-written CSS.

French

Native

English

Fluent

Spanish

Near Native

Russian

Conversational

Featured Projects

Streaming Platform

Yucast

Streaming & broadcasting platform - real-time media delivery, user interfaces, and backend architecture for live content.

Web Real-time UI/UX
View Landing
Landing Product

Orring Landing

Product landing page for Orring - modern responsive design, brand identity, and conversion-focused layout showcasing the app.

Web Landing Branding
View Landing
Media Cross-platform

Patotube

Cross-platform media app (Windows, Linux, Android) - video discovery and playback experience with a custom-built UI and native packaging.

Tauri Rust Multi-OS
View Landing
AI Neural

N3 - Intelligente

Custom AI agent paired with a learning environment - personalized assistant, knowledge ingestion, and an integrated school module to train, test and grow the model.

Python ML NLP
RPG Pygame

Listoria

Full 2D RPG - weapons, magic spells, enemy AI, particle effects, upgrade system, and original soundtrack.

Python Pygame Sound Design
E-Commerce Full Stack

E-Commerce Platform

Full-stack e-commerce solution featuring product catalog, shopping cart, blog engine, user authentication, and payment flow.

HTML/CSS/JS Cart Blog

Skills & Mastery

// the full toolbox

Languages

Java 8 / 11 / 17 Java SE / EE TypeScript JavaScript Python Bash Rust PHP HTML5 / CSS3 C / C++

Frontend

Angular (12-16) React Vue.js 2 / 3 RxJS Tailwind CSS Thymeleaf JSP Liquid (Shopify)

Backend & Frameworks

Spring / Spring Boot Spring Security Struts Play Framework Django Flask FastAPI Laravel Node.js Express REST APIs GraphQL Microservices Monolith Legacy Hexagonal Arch.

Cross-Platform & Mobile

Tauri 2 Rust React Native Android Studio Native Bridges Desktop Packaging Multi-OS Build

Data & Messaging

PostgreSQL MySQL Oracle MongoDB MongoCompass SQL / NoSQL Hibernate / JPA Kafka Query Optimization

DevOps & CI/CD

Docker Jenkins Production Line CI/CD Pipelines Maven Gradle Git / GitHub GitLab SVN / TortoiseSVN CFT Axway Azure

Observability

Grafana Prometheus Elastic Search Kibana SonarQube Sentry JUnit PyTest

Architecture & Patterns

RESTful API Design MVC Singleton Factory Builder Observer Decorator Template Dependency Injection OAuth 2.0 / JWT

Security & Systems

Active Directory VMware Pentesting Cybersecurity Networking Nmap

Creative & Game Dev

Unreal Engine Unity Pygame Blender Pixel Art 2D Animation Ableton Live FL Studio Cubase Adobe Suite

Career Journey

// 5+ years • click any role to expand

Lead developer on 6 concurrent enterprise applications for the French government. Daily juggling between legacy Java monoliths and modern microservices, owning full lifecycle from feature design to production deployment, observability and incident response.

Daily Arsenal

Java 8/11/17 SE/EE Spring Boot Microservices Monolith Legacy Angular TypeScript Python Bash Node.js Play Framework Maven Gradle Postgres MongoDB MongoCompass SQL / NoSQL CFT Axway Jenkins Production Line SonarQube Grafana Prometheus Elastic Search Docker CI/CD Git / GitLab SVN
  • Designed and built a centralized communication manager in Java/Spring Boot integrating Pelayo's internal APIs and proprietary libraries with PostgreSQL.
  • Established a 3-layer hexagonal architecture with full use-case implementation, ensuring separation of concerns and maintainability.
  • Built communication services for the automotive insurance sector - client notifications, email flows and system alerts.
  • Integrated Pelayo's specific Oracle JDBC connector for bidirectional comms with legacy DB systems.
  • Designed and optimized the database schema - performant tables, data migration and conversion.
  • Implemented a Kafka-orchestrated tracking system guaranteeing traceability and resilience across microservices.
  • Adapted quickly to Pelayo's technical standards - legacy code, internal libraries, custom annotations.
  • Delivered end-to-end solutions covering security and seamless SQL integration.
  • Built scalable systems optimizing front-end / back-end communication for efficiency and performance.
  • Established front-end architecture for network & microwave communication web apps - responsive Angular/TS/HTML/CSS UIs.
  • Implemented robust security systems and network visualization solutions, integrating modern UIs with legacy Java backends via JPA.
  • Managed project collaboration through Git/GitLab, translating complex client requirements into technical specs.
  • Improved system response times via query refactoring and caching strategies for several batch jobs.
  • Managed and maintained the PiercingXXL e-commerce platform - daily back/front-end updates in Python & Liquid (Shopify).
  • Built internal admin tools with Python-Django and PHP-Laravel for customer data management and querying.
  • Administered MySQL databases, implementing complex data sequences and optimizing DB performance.
  • Collaborated with the design team to improve UX and implement responsive design across the platform.
  • Translated complex client requirements into technical specifications while proactively improving UI/UX.
  • Developed a document management platform using Java 17 + Spring Boot, continuing the Atos enterprise collaboration.
  • Built backend components for digital document processing/storage via RESTful APIs.
  • Created reusable Angular 14 components for document visualization and management.
  • Worked with PostgreSQL for structured metadata and MongoDB for unstructured document content.
  • Integrated third-party services for automated document conversion and processing.
  • Refactored SQL queries to optimize system response times.
  • Worked in 2-week sprints (agile), daily stand-ups and task planning.
  • Implemented JUnit unit tests and integration tests; used Docker + GitLab CI for consistent dev environments.
  • Built a data-analysis platform for the financial sector with Java 17, Spring Boot and microservices.
  • Implemented advanced authentication with OAuth 2.0 + JWT, integrating third-party verification across multiple layers.
  • Designed and developed interactive Angular 14 dashboards for real-time financial data visualization.
  • Optimized complex SQL queries - 60% response-time reduction via advanced indexing and partitioning.
  • Wrote Python automation scripts for historical data migration and validation.
  • Implemented CI/CD pipelines using Jenkins + Docker, significantly reducing deployment time.
  • Collaborated with international teams in Scrum - weekly stand-ups and sprint planning.
  • Built and maintained the StockYou online order-management application.
  • Joined the design & dev team on the server side - Java SE 8 + Spring Boot.
  • Contributed to the software architecture, ensuring stability and performance.
  • Implemented mechanisms to protect sensitive data and restrict access to authorized users only.
  • Optimized and cached SQL queries - pagination and index optimization.
  • Contributed to order-process automation and workflow optimization.
  • Built server-side parts of a scalable order-management system with Java 11 + Spring Boot - microservices architecture, RESTful API design.
  • Designed the security infrastructure with Spring Security - multi-layer authentication and role-based authorization.
  • Used Spring Data JPA + Hibernate for efficient DB interactions - query optimization, robust persistence.
  • Contributed to front-end development with modern JS frameworks.
  • Worked in an agile environment with sprint planning and daily stand-ups.
  • Set up and maintained wired network systems and hardware in the restaurant.
  • Developed the backend architecture for employee account administration.
  • Implemented optimized relational database systems for various operations.
  • Improved data retrieval/update processes, significantly increasing system response times.
  • Contributed to automated workflows for employee onboarding and account management.

// Certifications

2025
Capgemini Internal Academy

Internal certifications • Udemy • Internal platforms

2025
Profile Academy • PluralSkills

Profile Software formations • PluralSkills certifications

2024
Akkodis Internal Academy

Internal certifications • Enterprise dev tracks

2023
Cod Red Academy

Python / Pentesting • VMware Environments

2022
Cisco Networking

Python B1 Certified

2022
Udemy

FullStack - Java/JS/Node/React

2021
Udemy • Skillsup

FullStack • WordPress • Big Data • 2D Animation

2020
Atos Academy • OpenClassroom

Security • Backend • Cyber • Java/Python/HTML

Let's Connect

Ready to work together?

Multilingual and immediately available, I'm ready to bring my diverse skill set to your next project. Let's build something great.

France
alex.guennad@gmail.com