Christo Papadopoulo

• ● Designed, developed, and maintained scalable backend services using Laravel

• ● Additional contributions to microservices written in Python (fastapi)

• ● Support and development of frontend React components

• ● Built and optimised RESTful APIs and microservices supporting core platform functionality

• ● Contributed to solutions deployed on AWS-based infrastructure

• ● Promoted coding standards and best practices across the team

• ● Provided technical guidance and mentoring to other developers

• ● Transition bespoke PHP app to modern PSR standards & microservice / event architecture

• ● Transition to containerisation using a mix of local docker, ECS

• ● Write test automation scripts in javascript (playwrite with npm built containers)

• ● Scaling of database using read replication on RDS and code changes

• ● Low level benchmarking using xdebug, php-spx and at load testing using artillery + ECS.

• ● Introduce a staged release process with an automated test sign off process

• ● Automated testing introduced (tideways, GitHub actions, docker)

• ● Server monitoring process with Tideways and Slack integration alert workflows

• ● Develop CI pipeline with gitactions

• ● Native database migration with rollbacks and versioning

• ● Support migration and development to scaling architecture

Worked within the Taxfiler division on taxfiler.co.uk, a cloud platform enabling online tax return filing for companies, individuals, and partnerships. The system integrates with multiple third-party services, most notably HMRC APIs, to automate submission and compliance workflows.

• ● Developed and maintained core platform features using Laravel and bespoke PHP

• ● Led integration work with a Kafka-based event bus, enabling asynchronous communication between internal services

• ● Built Node.js AWS Lambda functions to consume and process Kafka events and integrate them into platform workflows

• ● Contributed to the design and rollout of event-driven architecture across services within the wider IRIS ecosystem

• ● Supported the platform's AWS infrastructure transition, working with Terraform and cloud-native services

• ● Implemented integrations between legacy systems and the new event messaging infrastructure

• ● Mentored junior developers and led code reviews within a distributed engineering team

• ● Participated in release management and agile development processes within an 8-person team