Oluwatoba Aribo

Infrastructure Automation and Developer Experience.

• Created custom Crossplane components for AWS resources (RDS, ElastiCache, SQS), enabling standardized, self-service infrastructure deployment.
• Implemented GitOps workflow using GitHub Actions and ArgoCD, enabling near-instant deployments (under 30 seconds), with canary deployments using Argo Rollouts.
• Developed a Go-based migration tool to automate Helm configuration migration from the Spinnaker to the ArgoCD deployment platform, reducing migration time from 2 days to 1 hour per application. Built an ephemeral environment system handling 50+ concurrent developer environments with automated cleanup, saving $45,000 monthly in AWS costs.

Local Development Infrastructure

• Implemented Telepresence for local Kubernetes development, enabling developers to run services locally while connecting to remote cluster dependencies.
• Enhanced local testing capabilities by implementing a traffic manager on Kubernetes clusters across all environments.
• Created a developer environment bootstrapping program, reducing local setup time from 2-3 days to just 15 minutes. Improved local development workflow by enabling developers to test changes against production-like environments.
  
  Security & Infrastructure Management
• Implemented AWS security architecture with custom IAM roles and policies, ensuring least-privilege access for 100+ services.
• Configured network security with VPC segmentation and NACLs, protecting sensitive financial data.
• Set up automated compliance checks for CIS benchmarks using custom tools, achieving a 98% compliance score. Established comprehensive logging and monitoring using CloudTrail and CloudWatch.
  

• Led the development of an institutional client wallet management system with a team of six engineers, facilitating the funding and withdrawals of fiat and crypto assets.
• Achieved 100% accuracy in generating settlement report files for Visa transactions.
• Created REST APIs for institutional clients to query deposit and withdrawal history.
• Integrated a new payment ramp provider for Colombian users, reducing transaction time from 48 hours to near-instant.
• Implemented automated transaction reconciliation for internal and external transactions.
• Integrated payment ramp with Treasury Management Engine to automate fee and tax collection.
• Implemented the AUM reconciliation process to monitor liabilities against bank balances.
• Successfully migrated 2 million users from STP to NVIO (Bitso's fintech subsidiary).
• Enhanced system observability by migrating from Micrometer to OpenTelemetry.

• Implemented a distributed transaction processing system, reducing latency from 500 ms to 120 ms.
• Designed a high-availability architecture, achieving 99.95% uptime for critical payment services.
• Set up monitoring and alerting infrastructure using Datadog, reducing incident response time by 60%.
• Developed and maintained features for Transfer Service, an interbank payment processing platform, serving over 5 million users, using ISO 8583 message standards.
• Integrated payment gateways, processors, and settlement systems handle the entire payment lifecycle, from authorization to reconciliation.
• Optimized real-time transaction processing by reducing latency in authorization and settlement systems, improving transaction speed by 40%.
• Ensured compliance with PCI-DSS and other financial regulations, managing the secure handling of sensitive payment data.
• Improved software quality standards by 80% by applying unit and integration tests using Postman for API testing, JUnit, TestNG, test containers, JMeter for performance testing, and BDD tests with Spock.

• Conceptualized and implemented innovative solutions in AI, ML, RPA, and BPA as part of the digital transformation team.
• Developed a Visitor Management System with single sign-on capabilities for staff to create and manage appointments, view visitor logs, and enable receptionists to sign in and out visitors, with notifications via email and SMS.
• Assisted in developing APIs for FAST, an employee clocking system.
• Built Galaxy Shell to house all Digital Lab-designed applications, using Angular 7.
• Provided backend (API) support for Fidelity Bank's internal chatbot (Nicky).

• Designed and implemented end-to-end automation solutions for Access Bank's core banking operations, including salary processing, chequebook management, and foreign exchange transactions, transforming manual processes into efficient digital workflows.
• Engineered an automated Prime Brokerage process for Coronation Merchant Bank, significantly increasing daily trade volume capacity and reducing processing overhead.
• Developed custom automated modules in ProcessMaker, achieving a 60% reduction in processing time through intelligent workflow design and business rule optimization.
• Led comprehensive business process analysis initiatives, identifying and resolving operational bottlenecks across multiple banking workflows.
• Streamlined international funds transfer operations through automated systems, enhancing transaction accuracy, and reducing processing delays.
• Managed the full project lifecycle from requirements gathering to deployment, ensuring that solutions aligned with client objectives and regulatory requirements.
• Established strong client relationships through effective project delivery and continuous process improvement initiatives.