$ whoami
Ciaran Swanepoel
Senior Backend Developer
$ skills
Node.jsDot NetC#AWSDocker
Previous Experience
Senior Software Developer at AerCap
June 2024 – May 2025Oversaw the design, development, and support of key web and Windows-based applications across leasing, maintenance, and finance functions within the world’s largest aircraft leasing company.
Key Achievements:
- Led end-to-end delivery of internal software solutions, integrating with Oracle E-Business Suite and other systems
- Managed offshore development resources to ensure timely, high-quality output across multiple projects
- Provided technical leadership, mentoring, and hands-on support for UAT, deployment, and post-release care
- Spearheaded a major upgrade to the Project Management system, improving usability and reducing support tickets by 30%
- Delivered a scalable Maintenance Claims solution on .NET Core with React JS, enhancing performance and maintainability
- Strengthened SOX compliance and release processes through improved documentation and testing practices
.NET CoreReact JSOracle E-Business SuiteSQLSOX
Software Developer at AerCap
April 2022 – June 2024Built and maintained web and Windows-based applications supporting key aircraft leasing business processes, with a focus on Technical Specifications and Costing systems.
Key Achievements:
- Developed and maintained scalable software solutions using .NET Core, C#, and React JS for internal business systems
- Collaborated with business users and IT teams to deliver features aligned with operational needs across asset management and maintenance costs
- Supported deployment, testing, and UAT phases while maintaining compliance with SOX and internal standards
- Delivered a major upgrade to the Technical Specifications and Costs systems, reducing manual work and improving system performance
- Contributed to improved code quality and maintainability by implementing clean coding practices and reducing legacy technical debt
- Streamlined offshore development collaboration by enhancing documentation and issue tracking processes
.NET CoreC#React JSSOX
Software Developer at Trackplan FM
May 2021 – April 2022Contributed to the development and enhancement of a cloud-based facilities management platform, delivering scalable features for asset tracking, maintenance scheduling, and contractor management.
Key Achievements:
- Developed and maintained core application features using .NET, JavaScript, and SQL across a multi-tenant SaaS platform
- Collaborated with a small agile team to gather requirements, implement new functionality, and resolve customer-reported issues
- Supported integration with third-party systems and improved backend performance through query optimisation
- Played a key role in automating client onboarding decreasing time to onboard by 50%
- Reduced dashboard and report load times by up to 40% by optimising data access and front-end rendering logic
- Implemented key usability improvements based on customer feedback, enhancing overall user satisfaction
.NETJavaScriptSQLSaaS
Software Developer at Signature Business Solutions
March 2020 – February 2021Worked on the development and deployment of financial payment engines for a major South African fintech client, focusing on performance, security, and customisation.
Key Achievements:
- Developed and maintained C# .NET Core payment processing applications
- Wrote complex SQL queries for transaction reporting and financial data extraction
- Built custom file writers (CSV, Excel, PDF) and integrated encryption for sensitive data
- Migrated and managed data between Oracle SQL and MS SQL
- Collaborated in an Agile team and contributed to CI/CD pipeline implementation
- Delivered multiple customised bank payment file formats, tailored to strict client specs
- Improved engine performance and reliability through application-level logging and optimisation
- Streamlined and reduced client onboarding time by streamlining development processes
C#.NET CoreSQLOracle SQLMS SQLCI/CDAgile
Impact & Achievements
System Performance
API Gateway
- • P95 latency reduced from 250ms to 80ms
- • 99.99% availability achieved
- • Handles 2M requests/day
Database Optimization
- • Query response time improved by 70%
- • Implemented efficient indexing strategy
- • Reduced DB load by 45%
Infrastructure & DevOps
Cloud Infrastructure
- • Reduced AWS costs by 35%
- • Implemented auto-scaling for 20+ services
- • Zero-downtime deployments
CI/CD Pipeline
- • Reduced deployment time by 65%
- • Automated testing coverage at 90%
- • Integration tests success rate 99.5%
Development & Leadership
Code Quality
- • Led adoption of TypeScript across backend
- • Established coding standards
- • Reduced technical debt by 40%
Team Impact
- • Mentored 4 junior developers
- • Created 30+ technical documentation guides
- • Led 3 major system migrations
$ contact --info
Let's Connect
$ location --current
Melbourne, Australia
$ contact --email
ciaran@swanepoel.dev$ cat resume.pdf
Download Resume$ ls ./social-links