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Tris Sellick-Taylor

PROFILE

Tris Sellick-taylor

Tristan Sellick-Taylor contributed to the DEFRA/btms-backend and btms-gateway repositories by delivering robust backend features and improving asynchronous messaging workflows. He implemented MediatR-based matching pipelines, refactored data linking and movement integrity logic, and introduced AWS SNS queue integration to the gateway, enabling reliable message routing between APIs and AWS services. Using C#, .NET, and AWS SDK, Tristan focused on maintainable design patterns, dependency injection, and test-driven development. His work included stabilizing CI/CD pipelines with LocalStack, enhancing health monitoring, and expanding end-to-end test coverage, resulting in more reliable deployments and improved system observability across distributed backend services.

Overall Statistics

Feature vs Bugs

77%Features

Repository Contributions

25Total
Bugs
3
Commits
25
Features
10
Lines of code
7,753
Activity Months5

Work History

March 2025

11 Commits • 4 Features

Mar 1, 2025

March 2025 monthly summary highlighting key features delivered, major bugs fixed, and the overall business impact. Focused on expanding end-to-end testing capabilities, stabilizing CI/CD pipelines with LocalStack, and enhancing observability and integration points across Btms gateways and backend services.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for DEFRA/btms-gateway focused on delivering gateway-level AWS SNS queue integration and routing refactor to support sending messages to both APIs and AWS queues, with tests and queue service implementations to ensure reliability of asynchronous messaging.

January 2025

8 Commits • 1 Features

Jan 1, 2025

Month: 2025-01 — DEFRA/btms-backend. Delivered key feature work on Movement and Link Integrity and Data Model Simplification, including refactoring MovementBuilder to a factory pattern for better dependency management and testability, and removal of Matched flags to simplify state. Also improved Document Reference Processing by collapsing duplicates before matching and aligned tests and audit trails. Fixed Core Utilities ChangeSet path handling to use the provided path argument for correct value retrieval across JSON nodes. Overall, these changes improved data integrity, maintainability, and test reliability, reducing orphaned links and improving notification accuracy. Technologies/skills demonstrated: refactoring to factory pattern, data model simplification, JSON path handling, test-driven development, CI reliability.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024 monthly delivery for DEFRA/btms-backend focused on strengthening the Decisions domain and refactoring the Linking subsystem to improve maintainability, DI, and testability. Delivered foundational domain capabilities and test scaffolding to enable rapid future iterations on decision workflows and linking behavior.

November 2024

3 Commits • 3 Features

Nov 1, 2024

Monthly summary for 2024-11 (DEFRA/btms-backend): Delivered a set of core backend improvements focused on robust matching workflows, data relationships, and test reliability.

Activity

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Quality Metrics

Correctness84.8%
Maintainability84.8%
Architecture82.0%
Performance74.8%
AI Usage21.6%

Skills & Technologies

Programming Languages

BashC#JSONPythonTypeScriptYAML

Technical Skills

.NETAPI DevelopmentAPI GatewayAPI TestingAWSAWS SDKAWS SNSAWS SQSAzure Service BusBackend DevelopmentC#CI/CDConcurrency ControlData ModelingDatabase Management

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

DEFRA/btms-backend

Nov 2024 Mar 2025
4 Months active

Languages Used

C#JSONTypeScript

Technical Skills

API DevelopmentBackend DevelopmentC#Concurrency ControlData ModelingDependency Injection

DEFRA/btms-gateway

Feb 2025 Mar 2025
2 Months active

Languages Used

C#BashPythonYAML

Technical Skills

API GatewayAWSBackend DevelopmentDependency InjectionMessage QueuingRefactoring

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