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I am a detail-oriented Software Engineer with over six years of experience in backend engineering, site reliability engineering, and full-stack development. I design and deliver production-ready SaaS platforms, APIs, and cloud infrastructure, focusing on scalability and developer experience. I have a proven track record of architecting full-stack systems, integrating third-party services, and improving system reliability and performance. I enjoy turning complex problems into robust, scalable solutions that drive measurable business impact.…I am a detail-oriented Software Engineer with over six years of experience in backend engineering, site reliability engineering, and full-stack development. I design and deliver production-ready SaaS platforms, APIs, and cloud infrastructure, focusing on scalability and developer experience. I have a proven track record of architecting full-stack systems, integrating third-party services, and improving system reliability and performance. I enjoy turning complex problems into robust, scalable solutions that drive measurable business impact.

Paddy O'Connor

PRO

Full Stack Developer, Back-End Developer, Front-End Developer, +6

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I am a detail-oriented Software Engineer with over six years of experience in backend engineering, site reliability engineering, and full-stack development. I design and deliver production-ready SaaS platforms, APIs, and cloud infrastructure, focusing on scalability and developer experience. I have a proven track record of architecting full-stack systems, integrating third-party services, and improving system reliability and performance. I enjoy turning complex problems into robust, scalable solutions that drive measurable business impact.…I am a detail-oriented Software Engineer with over six years of experience in backend engineering, site reliability engineering, and full-stack development. I design and deliver production-ready SaaS platforms, APIs, and cloud infrastructure, focusing on scalability and developer experience. I have a proven track record of architecting full-stack systems, integrating third-party services, and improving system reliability and performance. I enjoy turning complex problems into robust, scalable solutions that drive measurable business impact.

Available to hire

Sydney, Australia

I am a detail-oriented Software Engineer with over six years of experience in backend engineering, site reliability engineering, and full-stack development. I design and deliver production-ready SaaS platforms, APIs, and cloud infrastructure, focusing on scalability and developer experience.

I have a proven track record of architecting full-stack systems, integrating third-party services, and improving system reliability and performance. I enjoy turning complex problems into robust, scalable solutions that drive measurable business impact.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Lead Engineer at PitchUp

January 1, 2025 - Present

Architected and delivered a full-stack SaaS platform from concept to production using FastAPI, React/Vite, and PostgreSQL/Supabase, enabling real-time bookings, payments, and facility management. Designed relational schema for bookings, facilities, time slots, and availability to support recurring scheduling and slot-level pricing for 700+ venues. Built and deployed multiple RESTful API endpoints with median latency under 200 ms, covering authentication, bookings, quotes, enquiries, facility management, and role-based access. Integrated Stripe (PaymentIntents, webhooks), Google Places, and Resend to automate workflows, reducing manual admin work by 90%. Implemented secure multi-tenant authentication and authorization using Supabase RLS and JWT with granular RBAC for players, venues, and admins. Delivered calendar availability engine with open hours and exceptions, powering scheduling for schools and councils. Deployed infrastructure with Render and GitHub Actions (CI/CD) to optimize de

Site Reliability Engineer / Software Engineer at BT Group

January 1, 2020 - December 31, 2024

Led Dynatrace adoption across BT Business infrastructure, achieving ~90% server and application monitoring coverage and improving visibility, alerting, and incident response. Developed Python automation scripts to query Salesforce APIs and transform unstructured logs into actionable insights, reducing manual reporting by 70%. Designed and deployed AWS Lambda functions to automate log queries and data pipelines, integrating results into PostgreSQL and Grafana dashboards for real-time analytics. Built Java-based microservices to optimize broadband order lead times, improving processing efficiency by ~25%. Integrated multi-source observability pipelines by connecting Salesforce and AWS ECS logs into Dynatrace and automating log forwarding with CloudFormation, improving MTTR. Enhanced frontend components in React and HTML/CSS. Implemented continuous monitoring and connectivity tools (Axios-based checkers) to ensure service reliability and reduce downtime. Collaborated in Agile environments

Software Engineer / Site Reliability Engineer at BT Group

January 1, 2020 - January 1, 2024

Led Dynatrace rollout across BT Business infrastructure, achieving ~90% coverage for server and application monitoring, improving visibility, alerting, and incident response times. Built Python automation to query Salesforce APIs and transform unstructured logs into actionable insights, reducing manual reporting by ~70%. Designed and deployed AWS Lambda-based data pipelines, integrating results into PostgreSQL and Grafana dashboards for real-time analytics. Built Java-based microservices to optimise broadband order lead times, improving processing efficiency by ~25%. Integrated multi-source observability pipelines by connecting Salesforce and AWS ECS logs into Dynatrace and automating log forwarding with CloudFormation. Enhanced frontend components, mentored junior developers, and supported AWS migration planning (EC2/EKS/S3) for scalability and cost-efficiency.

Lead Engineer at PitchUp (Startup Company)

January 1, 2025 - Present

Architected and delivered a full-stack SaaS platform from concept to production using FastAPI, React/Vite, and PostgreSQL/Supabase. Implemented a relational schema for bookings, facilities, time slots, and availability to support recurring scheduling and slot-level pricing for 700+ venues. Built multiple REST endpoints with median latency under 200 ms for authentication, bookings, quotes, enquiries, facility management, and RBAC. Integrated Stripe payments, Google Places, and Resend to automate workflows, reducing manual admin effort by 90%. Implemented secure multi-tenant authentication and authorization using Supabase RLS and JWT. Delivered a calendar availability engine with configurable hours and slot generation for schools and councils. Deployed on Render with GitHub Actions for CI/CD and environment management to support growth.