Freelance Solution Architect / Solution Designer New Technology Hub | Budapest, Hungary | Hybrid

Solution Architect / Solution Designer New Technology Hub | Budapest, Hungary | Hybrid | Contract
Budapest, Hungary (occasional on-site) | | 📅 Duration: 12 months | 💼 Contract / Freelance

About the Opportunity
A major European telecommunications group is establishing a new technology hub in Hungary to deliver engineering excellence, on-site support, and knowledge exchange across its European programmes. As Solution Architect / Designer, you will be the technical authority within this hub — bridging business requirements and engineering delivery across a modern Java-based microservices stack in a mission-critical telco environment.
This is a hands-on architecture role: you will design, validate, and guide implementation — not just draw diagrams.

Key Responsibilities

• Own end-to-end solution design across backend, integration, and frontend layers
• Define and enforce architectural standards for Java microservice-based systems
• Translate complex business and product requirements into scalable, maintainable technical solutions
• Design REST API frameworks and integration patterns for internal and external systems
• Oversee PostgreSQL data architecture including JSONB structures and schema design
• Guide and review frontend architecture decisions using Angular and/or React / TypeScript
• Define CI/CD pipeline standards and DevOps integration patterns
• Evaluate and recommend tooling across the Apache ecosystem (Kafka, Camel, etc.)
• Lead technical workshops and design reviews with cross-functional teams
• Collaborate with product owners, developers, and DevOps engineers in agile Scrum/Kanban environments
• Support and mentor senior developers, ensuring architectural consistency across teams
• Contribute to build vs. buy decisions, vendor assessments, and technical roadmaps
• Ensure solutions meet performance, security, scalability, and compliance standards

Required Skills & Experience

• Proven experience as a Solution Architect or Senior Solution Designer in enterprise environments
• Deep expertise in Java (Java 21 preferred) and Spring Boot microservice architecture
• Strong REST API design and integration experience — internal and third-party systems
• Solid PostgreSQL knowledge including schema design and JSONB
• Frontend architecture experience: JavaScript/TypeScript with Angular or React
• Experience with Apache ecosystem tooling (Kafka, Camel, or similar)
• CI/CD pipeline design: Maven, Jenkins, GitLab CI or equivalent
• Containerisation and orchestration: Docker, Kubernetes, Helm
• Strong understanding of security, performance, and resilience patterns in distributed systems
• Telecommunications sector experience — strong advantage
• Agile mindset with hands-on Scrum or Kanban experience
• Fluent English — written and verbal
• Interest in and practical exposure to AI-assisted development tooling

Nice to Have

• SOAP service integration and legacy modernisation experience
• Graylog or equivalent observability/logging platform
• German language skills (beneficial, not mandatory)
• Architecture certifications (TOGAF, AWS/Azure/GCP)

The Details

• Location: Budapest, Hungary — remote-first, occasional on-site
• Start: TBC — targeting candidates available within 2–3 months (Q3 2026)
• Duration: 12 months, extension highly likely
• Workload: 100%
• Languages: English essential; German a bonus
• EU work authorisation required

To apply: jamaine.agyepong@xcede.de