• Develop and maintain full REST APIs in C#/.NET 6+ using Entity Framework Core. • Implement and integrate payment flow solutions based on ISO 8583 messaging. • Ensure application and integration security using digital certificates and OAuth2. • Automate build, testing and deployment with Docker, Kubernetes and CI/CD pipelines. • Apply TDD and conduct integration and load testing to ensure performance and stability.

• Administer and optimize Kong Gateway (routes, services, plugins, certificates, rate limiting, logging). • Build and extend Kong plugins and manage Kong in Kubernetes (Helm/operator patterns, upgrades, config promotion). • Define API standards, review API designs, and manage OpenAPI (OAS) contracts, versioning, and governance. • Implement authentication and security patterns (JWT, claims mapping, key rotation, AD/LDAP integration). • Build and operate Kubernetes resources; manage AWS networking, compute, load balancing, DNS, and secrets. • Implement CI/CD and GitOps workflows, automated validation, and environment promotion. • Deliver observability: API metering, dashboards, logs/metrics/traces, SLO reporting. • Troubleshoot Linux/container issues and support on-call operations with runbooks and documentation.

• Design, build, and maintain backend services across the WalletConnect Pay platform — payment flows, APIs, data pipelines, and internal tooling. • Make sound architectural decisions for the services you own: API design, data modelling, error handling, and system boundaries. • Write technical design documents before major implementation work and participate in architectural reviews. • Ship production-quality code with strong testing, clear documentation, and attention to edge cases. • Own your services end-to-end: implementation, testing, deployment, monitoring, and operational support. • Contribute infrastructure using AWS and Terraform. We don’t have a dedicated infra function, so engineers own their infra. • Build observability into everything you ship — logging, metrics, tracing, and alerting that meet the reliability bar of a production payment system. • Respond to and learn from production incidents, driving improvements to system resilience. • Collaborate with cross-functional stakeholders including Product, Design, Ops, Finance, Legal, and BD to turn requirements into clean implementations. • Participate in code review culture with AI-assisted development workflows, including automated agent reviews on PRs. • Contribute to engineering standards, documentation, and team processes that help the Pay team scale.

• Design and implement scalable microservices in a cloud-first environment (AWS). • Translate product requirements into robust technical designs and architectural decisions. • Develop secure, resilient backend services using C# and .NET Core. • Ensure strong automated testing practices aligned with the test pyramid. • Review peers’ code and mentor engineers to elevate engineering standards. • Lead research and technical planning for complex initiatives. • Troubleshoot and resolve complex production issues across distributed systems. • Promote best practices balancing performance, scalability, cost, and delivery timelines. • Collaborate cross-functionally with Product Managers, UX Designers, and UI Engineers.