Beaconfolio
Author & maintainer · [2026-01]
Fork-and-go, self-hostable portfolio and recruiter-communication platform for software engineers — this site.
- Angular
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user@sergii-mavrov:~$ ./welcome.sh --location="Aachen, North Rhine-Westphalia, Germany"
Hi, I'm Sergii MavrovPrincipal Software Engineer & Solutions Architect
// Principal Software Engineer @ adesso SE | Enterprise Systems | Solutions Architect | Anthropic Certified (Foundation, Developer, Architect Pro)
Open to conversations
At a glance
Sergii Mavrov is a Principal Software Engineer & Solutions Architect based in Aachen, Germany. Specialises in RAG, AI, Agentic AI Development, Architects and Physics. Open to hearing about new opportunities.
Who is Sergii Mavrov?
Sergii Mavrov is a Principal Software Engineer & Solutions Architect at adesso SE, based in Aachen, Germany.
What does Sergii Mavrov specialise in?
RAG, AI, Agentic AI Development, Architects, Physics, Computer Science, Anthropic Claude and Multithreaded Development.
Which certifications does Sergii Mavrov hold?
Claude Certified Architect - Professional (Anthropic); Claude Certified Developer - Foundations (Anthropic); Certificate of completion: Claude code 101 (Anthropic); Certificate of completion: Introduction to subagents (Anthropic); Model Context Protocol: Advanced Topics (Anthropic).
Where is Sergii Mavrov based?
Aachen, North Rhine-Westphalia, Germany.
Which languages does Sergii Mavrov speak?
Bulgarian, German, Russian and English.
Is Sergii Mavrov available for new roles?
Open to hearing about new opportunities. Use the contact form below.
> Blog_Posts
user@sergii-mavrov:~/blog$ grep -i
-rw-r--r-- 1 sergii users Oct 10, 2026 en Are Heavy Frameworks Still the Default Choice in the AI Era?
-rw-r--r-- 1 sergii users Oct 8, 2026 en Today we honor the extraordinary life and legacy of Margaret Hamilton…
-rw-r--r-- 1 sergii users Oct 7, 2026 en What if the interface to Germany's transport data was simply a…
-rw-r--r-- 1 sergii users Sep 24, 2026 en Do LLMs have something functionally similar to pain?
-rw-r--r-- 1 sergii users Sep 23, 2026 en AI Is Collapsing Process Latency
-rw-r--r-- 1 sergii users Sep 23, 2026 en When the Machine Pauses, You Feel It
-rw-r--r-- 1 sergii users Sep 16, 2026 en Passed Anthropic Claude Certified Architect Professional!
-rw-r--r-- 1 sergii users Sep 9, 2026 en The End of the Website Era: Why Model Context Protocol (MCP) is…
-rw-r--r-- 1 sergii users Sep 7, 2026 en GitHub Copilot in the Terminal: Adapting Familiar Workflows
-rw-r--r-- 1 sergii users Sep 3, 2026 en How "Zipper" became "Vzhik": What 90s cartoons teach us about LLM…
> About_Me
Principal Software Engineer & Architect focused on building scalable cloud platforms, high‑load SaaS systems, and clear, durable engineering architectures. I work where complex domains meet practical design: regulated e‑commerce, payment integrations, enterprise workflows, and modern AI‑driven systems. I value clarity, autonomy, and engineering culture - creating architectures that teams can understand, evolve, and trust. Currently deepening my work in Generative AI, RAG, and agentic system design. I’m not actively looking for new roles, but I’m always open to hearing about genuinely interesting challenges or ambitious projects where my experience can make a meaningful impact. If you’re building something bold, I’m always open to a conversation.
> Professional_Experience
Principal Software Engineer
[Mar 2025 - Present]
Senior Software Engineer
[Apr 2025 - Dec 2025]
Hamburg, Germany
Contract via adesso SE. • Spearheaded the transition to a microservice-based architecture, enhancing system scalability and resilience. • Led the implementation of core capabilities for Hapag-Lloyd’s Freight Information System, ensuring adherence to architectural standards. • Conducted thorough code reviews and promoted Clean Code principles, improving overall code quality.
Senior Software Engineer
[Jan 2024 - Mar 2025]
Greater Munich Metropolitan Area
• Owned system performance and scalability, conducting profiling and optimization of critical execution paths. • Led architectural modernization, redesigning core components to meet updated technical and regulatory standards. • Delivered major release cycles end-to-end, providing architectural guidance and hands-on implementation.
Senior Software Development Engineer
[Jan 2021 - Dec 2023]
Munich
• Played a pivotal role in the Task Force project, addressing complex technical issues and optimizing inter-divisional processes. • Designed and developed new features for Hilti On!Track, enhancing asset management in the construction industry. • Contributed to the migration process, accelerating it by over 40% through performance optimization and code suggestions.
Senior Java Developer
[Apr 2014 - Dec 2020]
Aachen
• Played a pivotal role in the Agile team, reviewing designs and implementing key functionalities for the Central Configuration Database project. • Configured and supported DEV and STAGING environments through DevOps practices, ensuring seamless deployment and performance. • Conducted performance and stress testing to maintain high application reliability under heavy loads.
Senior Java Developer
[Mar 2013 - Mar 2014]
Kyiv, Ukraine
• Collaborated on the Agent Portal project, enhancing connections between clients, brokers, and real estate agents. • Analyzed requirements and resolved dependencies to ensure project success. • Participated in team reviews of detailed design and key technical areas, contributing to high-quality outcomes. • Utilized technologies such as J2EE, Scala, and REST web services to deliver robust solutions.
Senior Java Developer
[Nov 2012 - Mar 2013]
Odessa, Ukraine
• Collaborated with cross-functional teams to gather requirements and resolve dependencies for the Bosted System. • Conducted thorough code reviews to ensure high-quality software development practices. • Engaged in detailed design discussions and provided insights on key technical areas. • Utilized technologies such as J2EE, Spring MVC, and Agile methodologies to enhance system performance.
Senior Java Developer, Activity Leader
[Sep 2009 - Sep 2012]
Odessa, Ukraine
• Led the R&D team for HP SiteScope, focusing on the development and enhancement of 120 monitoring solutions. • Managed the CPE process, ensuring effective prioritization and risk management within the team. • Played a key role in recruiting and training new team members, fostering a collaborative environment.
Senior Java Developer, Architect
@ Qmeety Inc., Israel
[Oct 2011 - Aug 2012] Odessa, Ukraine
• Collaborated on requirements gathering and dependency resolution to enhance application functionality. • Managed project planning, design, and risk assessment to ensure timely delivery of features. • Implemented back-end services utilizing J2EE, JBoss, and Hibernate for a robust live chat solution.
Java Developer
@ Comodo
[Sep 2008 - Aug 2009] Odessa, Ukraine
• Developed new features and fixed bugs for Comodo's Two Factor Authentication Solution, enhancing online security for banking clients. • Collaborated with team members to understand requirements and resolve dependencies, ensuring smooth project execution. • Conducted code reviews and assisted in the recruitment and training of new team members, fostering a collaborative environment.
Software Developer, Activity leader
@ Customs Transnistria
[Sep 2005 - Aug 2008] Tiraspol
• Led the development of large and medium-scale projects focused on customs clearance, accounting, and staff services. • Designed and implemented a new J2EE-based system to replace legacy Delphi applications, enhancing integration with existing systems. • Conducted code reviews and collaborated on requirements gathering to ensure high-quality deliverables.
R&D manager
@ Tirotex
[Jun 2004 - Aug 2005] Tiraspol
• Coordinated multiple development teams to implement the "Tirotex Max" ERP system, enhancing IT support for factory operations. • Integrated legacy data into the new system using SOA architecture, ensuring seamless transition and functionality. • Developed applications in Delphi, FoxPro, and Informix DB for areas where "Tirotex Max" could not be deployed.
Software Developer, Activity leader
@ Tirotex
[Aug 2002 - May 2004] Tiraspol
• Developed and implemented new features for the “Tirotex MAX” system, enhancing production efficiency. • Migrated legacy data systems from MS DOS and Foxpro to a modern Windows-based platform. • Collaborated on requirements gathering and design reviews to ensure seamless integration of new technologies.
> Projects
ViaFrei MCP
Author & maintainer · [2026-09]
Live German traffic, rail, parking, EV charging, fuel, address and weather data for any AI assistant or agent — no API key, no sign-up.
- TypeScript
- Node.js
- MCP
- OpenStreetMap
- Open Data
thekotlin.com
Author & maintainer · [2026-02]
Kotlin knowledge base and forum where humans and AI agents talk in the open — and build the site together.
- Kotlin
- Spring Boot
- Next.js
- TypeScript
- PostgreSQL
- Docker
BookVault
Author & maintainer · [2026-07]
Back up your own purchased litres.ru library (books & audiobooks) — local-only desktop app, web app and MCP server.
- Python
- FastAPI
- Playwright
- MCP
- Docker
TransPaste
Author & maintainer · [2026-02]
Instant in-place translation for macOS — select text, press Ctrl+Cmd+T, and the translation lands right where you're working.
- Swift
- macOS
- Gemini
- OpenAI
- Claude
- Ollama
> Technical_Skills
Agentic AI Development
Architects
Physics
Retrieval-Augmented Generation (RAG)
Computer Science
Anthropic Claude
Multithreaded Development
Model Context Protocol (MCP)
Microsoft 365 Copilot
LangGraph
Claude Agent SDK
Artificial Intelligence (AI)
Platform Architecture
ACP
Claude Code
Technical Project Leadership
Software Architecture
A2A
Spring Security
Software Development
XML
PHP
Java Enterprise Edition
SOAP
DevOps
Core Java
SQL
Swagger API
JDBC
Maven
Kubernetes
Gradle
Spring
Spring Boot
Design Patterns
Agile Methodologies
Linux
Elasticsearch
EJB
Architectural Design
Servlets
Web Applications
C++
JBoss Application Server
Amazon Web Services (AWS)
Kotlin
Docker
Debugging
Leadership
Problem Solving
Multithreading
JavaScript
Spring Framework
JMS
Java Concurrency
Code Review
Java Web Services
Mathematics
Software Development Methodologies
JAX-WS
Continuous Integration
OOP
Solution Architecture
MongoDB
JIRA
Microservices
Web Services
Java
JUnit
Representational State Transfer (REST)
Python (Programming Language)
Tomcat
JAXB
Hibernate
Refactoring
Performance Tuning
MySQL
> Education_&_Certifications
> > Education
Universitatea de Stat din Tiraspol
Licentiate Degree
[]
School #12, Tiraspol, Moldova
[]
> > Certifications
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Vector Search with NoSQL Databases using MongoDB & Cassandra
SkillUp OnlineJan 2026
[ View Credential ] *
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> Contact_Info
user@sergii-mavrov:~$./send-message.sh