Solution Architect

Summary

Join Unlimit, a global fintech powerhouse, as a Solution Architect to lead the transformation of its core backend platforms. You will design and implement next-generation architecture that is scalable, resilient, and AI-native. This role involves close collaboration with various teams, including Product, DevOps, Engineering, and Data. Your work will directly impact systems serving thousands of merchants globally. This is a unique opportunity to shape the future of financial infrastructure at a pivotal moment for Unlimit. You will be responsible for solution design for backend systems powering various payment products and ensuring zero-downtime deployments.

Requirements

• 6+ years in architecture roles, ideally in fintech or high-availability distributed systems
• Proven experience designing scalable backends in AWS or hybrid cloud environments
• Hands-on background in backend development, DevOps, or cloud infrastructure (Java, Go, Python preferred)
• Deep understanding of event-driven systems, microservices, CI/CD, observability (Grafana, Prometheus)
• Strong stakeholder communication and experience driving system design reviews across teams
• Comfortable working in fast-paced, cross-functional environments (LATAM, EU, and APAC teams)

Responsibilities

• Take ownership of solution design for backend systems powering payment products (card acquiring, wallets, crypto, BaaS)
• Design and maintain architecture that is AI-native and cloud-agnostic, aligned with modern security, scalability, and compliance standards
• Partner with product managers, engineering leads, QA, and analysts to translate business needs into modular architectural designs
• Build out documentation, high-level solution diagrams, system interface contracts, and component-level specifications
• Act as a key contributor to API design and service decomposition efforts
• Guide cloud migration and infrastructure evolution (AWS-based stack, with Kubernetes, GitLab CI/CD, Terraform)
• Ensure systems enable zero-downtime deployments, automated rollbacks, and scalable horizontal patterns
• Conduct architectural reviews, technical assessments, and work closely with delivery teams to implement designs
• Act as a thought leader and “tech compass” across engineering functions, driving architectural maturity and platform modernization
• Proactively identify technical debt and long-term design risks; propose mitigation strategies

Preferred Qualifications

• Experience with Kubernetes, Terraform, and GitLab CI/CD is strongly preferred
• Previous work with AI/ML pipelines, AI agent integration, or MLOps is a strong plus
• Experience in financial services, payment gateways, acquiring, or digital wallets is a bonus

Benefits

• A unique opportunity to drive AI-native backend transformation at scale
• Exposure to the full fintech product landscape: card processing, crypto, wallets, BaaS
• Work in a global company with a strong engineering culture, agile mindset, and flat hierarchy
• Collaborate with international teams that deeply value architecture, resilience, and innovation
• Flexible remote work policy and strong support for async cross-timezone collaboration