Senior IT Solutions Architect – Mobile & Cloud Banking

OPTIVEUM sp. z o.o. • Capon Bridge, WV

5d • PLN 180 - PLN 190 • Hybrid

About The Position

We are seeking a Senior IT Solutions Architect to co-define the target architecture for Poland’s premier mobile banking ecosystem. Operating at the intersection of product and platform engineering (50/50 split), you will design microservices-based, distributed, and cloud-native solutions designed to handle high-concurrency traffic with near 100% availability.

Requirements

• 5+ years in IT solution architecture and complex system integrations.
• Proven track record in designing architecture for mobile applications and high-availability, high-concurrency systems in the financial sector.
• Practical experience with microservices architecture, Kubernetes (k8s) orchestration, containerization, and cloud CI/CD delivery pipelines.
• Solid grasp of domain-driven platform teams supporting product engineering teams.
• Strong understanding of authentication/authorization protocols (OAuth 2.0, OIDC) and cryptography (digital signatures, PKI, encryption).
• Hands-on ability to model in C4/UML, read/analyze code in Java, Kotlin, or Swift, and work with Git.
• Higher degree in Computer Science (or related) and fluency in reading technical documentation in English.

Responsibilities

• Design complex, distributed software architecture and system integrations for high-volume mobile banking services.
• Split focus 50/50 between driving core Tech Platform architecture in the Foundation team and supporting dedicated domain product teams.
• Establish requirements for hardware, infrastructure, tech stack, service orchestration, and software development best practices.
• Model system integrations (C4/UML) and maintain complete, high-quality architectural documentation.
• Partner with cybersecurity experts on access layers, OAuth 2.0/OIDC implementations, and cryptographic standards.
• Independently gather technical domain context across the organization to recommend and implement architectural optimizations.

Benefits

• Salary: 180 – 190 PLN/h net + VAT (B2B contract, depending on experience).
• Work Model: Hybrid (minimum 2 days/month in the Warsaw office).
• Contract Duration: 6–12 months (with a high probability of long-term extension).
• Location: Warsaw, Poland.
• Impact & Scale: Direct influence on an application powering the daily financial transactions of millions of users using a modern tech stack.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior