Razvan – PHP, Symfony, React

A property management platform used by field workers to manage and track job assignments.

• Developed backend services and mobile functionality for a property management platform used by field workers to manage and track job assignments;
• Built a cross-platform PWA using PHP, Symfony, and React Native, delivering a stable and functional product within a short development timeline;
• Ensured a smooth initial rollout by designing reliable onboarding flows that allowed field workers to adopt the platform with minimal friction;
• Contributed to backend architecture decisions, API design, and delivery of a production-ready mobile solution from the ground up.

A large-scale security platform operating across connected-device environments.

• Designed, developed, and maintained a large-scale security platform within a microservices architecture;
• Led cross-platform implementations affecting up to 200k connected devices, coordinating delivery across multiple systems;
• Managed and optimised data persistence and caching using MongoDB and Redis;
• Implemented improvements in system reliability, fault tolerance, and performance optimisation for cloud-based services;
• Reduced security action transport time from minutes to seconds, improving response speed across the platform;
• Implemented a detection mechanism that removed a recurring outage pattern and stopped a cycle of 1 to 2 monthly hotfixes caused by database failures;
• Contributed to code reviews, technical discussions, and mentoring junior engineers;
• Deployed and managed microservices using Docker to ensure environment consistency and scalability.

A high-usage digital platform managing administrative and operational workflows.

• Led development for a high-usage digital platform managing administrative and operational workflows;
• Reworked an intern-built codebase into a more stable and scalable application able to support significantly higher traffic;
• Reduced response times by up to 28% through backend optimisation, database improvements, and cleaner application flow;
• Cut bugs and hotfixes by 32% by introducing stronger automated testing and improving engineering discipline;
• Improved client retention by 20% by stabilising performance and supporting a better user experience;
• Reduced developer support time by 30% and sprint carry-overs by 15% through better code quality and delivery consistency;
• Worked with sales and stakeholders to turn business requirements into product features and practical technical solutions;
• Planned with the BA department to define strategies for new modules.
• Added estimates for upcoming modules;
• Refactored a Zend Framework application and upgraded it to Symfony 4.x;
• Conducted technical breakdown, grooming, and splitting ceremonies;
• Refactored functionalities to improve performance and optimise costs;
• Eliminated duplicate code and built a microservices-ready infrastructure;
• Optimised queries;
• Refactored jQuery scripts;
• Added analytics.

B2B digital products focused on maintainability, delivery speed, and operational efficiency.

• Developed backend functionality for B2B digital products with focus on maintainability, delivery speed, and operational efficiency;
• Reduced infrastructure costs by 20% through backend and environment optimisation;
• Refactored around 70% of the codebase while maintaining delivery against roadmap commitments;
• Built custom reports and data outputs that helped stakeholders make faster and better-informed decisions;
• Introduced a freeze and unfreeze delivery approach during Covid disruption that reduced client escalation risk and helped limit potential financial exposure from compensation claims on affected projects;
• Improved code quality and long-term maintainability through cleaner structure and more predictable backend behavior.

A B2B travel app designed to work with very large volumes.

• Designed, developed, and maintained a B2B travel application designed to work with very large volumes;
• Converted legacy code to PSR standards and Zend Expressive architecture;
• Consumed external APIs;
• Refactored the user interface and converted Prototype to jQuery;
• Improved the existing SOAP API;
• Designed and built internal REST APIs using Zend Expressive, HAL, and Doctrine;
• Improved application efficiency in both time and memory;
• Improved the caching system using Redis;
• Worked with database transactions and caching;
• Improved the authentication and authorisation systems according to newer technologies;
• Designed and implemented a microservice architecture;
• Reduced support cases by 15% through product improvements and more stable backend behavior;
• Cut client onboarding time by 31% by improving setup and implementation workflows;
• Reduced API response time by 19%, improving platform speed and day-to-day usability;
• Performed code reviews;
• Handled level 2 technical support tasks;
• Supported new colleagues through training;
• Revised the interview technical test;
• Researched and proposed a team feedback program.

A travel application and multiple service aggregator.

• Designed, built, and maintained a travel application and multiple service aggregator;
• Consumed external APIs;
• Managed processes;
• Managed cache;
• Worked on the jQuery-based frontend interface;
• Designed and built the flights API that communicated with multiple third-party flight providers, gathered data, and provided it in the requested format;
• Designed and built the bookings API;
• Implemented communication with multiple payment gateways.