Fernando Perez-Diaz
Verified Expert in Engineering
Software Developer
Fernando is a versatile developer with experience working on large projects in fast-paced environments, following agile practices and TDD. His experience spans the entire project lifecycle—from the design phase to completion, continuously liaising with stakeholders, managing their expectations, and prioritizing tasks. Fernando's current focus is on Scala and functional programming. He is constantly learning and improving himself and enjoys mentoring and upskilling other members of his teams.
Portfolio
Experience
Availability
Preferred Environment
IntelliJ IDEA, Ubuntu, Slack, MacOS
The most amazing...
...thing I've built is Deliveroo's financial reporting platform.
Work Experience
Senior Software Engineer
BP
- Developed a battery rental management system for renting portable batteries in South Africa.
- Built an ordering system for self-service kiosks in a pilot project for BP to upsell and recommend convenience items while users are charging their EV vehicles or refueling in a petrol station.
- Integrated our software with payment providers, namely Stripe and Planet Payment.
Senior Software Engineer
Deliveroo
- Transformed the old offline ledger journals into a new data pipeline that processed and generated financial events, in real time, for the consumption of the finance department. The new system could process millions of events per minute.
- Built, improved, and maintained Deliveroo's financial reporting systems to ensure the accuracy and quality of financial data.
- Worked closely with stakeholders throughout the development cycle. Created technical design documents.
- Mentored junior colleagues to help them resolve problems and brought them up to speed. Coached and upskilled them.
Software Engineer
University of Warwick
- Created and maintained several systems used by the student and staff bodies and the general public.
- Developed the Alternative Exams Portal, an online exam platform built during the COVID-19 pandemic under a tight deadline to replace in-person exams. The system handled over 10,000 concurrent sittings at peak times.
- Created a scholarship management system for the institution's scholarships, handling thousands of applications each year.
- Developed the module approval and module catalogue, bringing an entirely antiquated paper-based process into the 21st century, streamlining the whole process of module creation across every academic department.
- Played an essential role in developing a new search engine for the institution, Warwick Search, including a crawler to index information.
- Contributed to Sitebuilder, a CMS that managed all of the university's web pages, with a forum, event calendar, and booking capabilities.
- Communicated with customers, managed stakeholder expectations, and prioritized tasks.
Freelance Web Development
Freelance
- Developed a Reddit-like social news aggregator in Python and Django.
- Created several PHP themes for various WordPress sites that I maintained.
- Built, hosted, and maintained static customer websites.
Experience
Ledger Platform
Oversaw the project from start to delivery, working alongside the project manager. Gathered requirements, wrote technical design documents, liaised with stakeholders, managed their expectations, and prioritized tasks. Led a group of three developers and interacted with QAs until the successful completion of the project.
Alternative Exams Portal
Search Engine for the University of Warwick
https://search.warwick.ac.uk/The project involved using React and Redux for the front end, Scala and Play for the back end, and working with Elasticsearch.
Skills
Languages
Scala, TypeScript, JavaScript, CSS, GraphQL, SQL, Kotlin, Python, HTML, Java, Snowflake, Java 11, Go, PHP
Frameworks
Play, ScalaMock, Akka, Hibernate, Spring, Spring Boot, JUnit, Redux, Play Framework, Django, Jest, Angular, gRPC
Libraries/APIs
Slick, React, REST APIs, HTTP API, Node.js
Tools
ScalaTest, Git, typelevel.scala, Amazon Simple Queue Service (SQS), Bamboo, Amazon Elastic Container Service (Amazon ECS), Terraform, IntelliJ IDEA, Puppet, CircleCI, Apache Maven
Paradigms
Test-driven Development (TDD), Agile Software Development, Requirements Analysis, Object-relational Mapping (ORM), Scalable Application, Microservices
Storage
PostgreSQL, Relational Databases, Elasticsearch, MySQL, Data Pipelines, Redis, MongoDB
Other
APIs, Technical Documentation, Documentation, Software Architecture, Architecture, Full-stack, Web Development, Message Queues, HTTP, Back-end, Back-end Development, Product Leadership, Scalable Architecture, Software Design, Leadership, CI/CD Pipelines, Distributed Systems, Simulations, Machine Learning, Amazon RDS, WebSockets, Robotics
Platforms
Apache Kafka, Amazon Web Services (AWS), Docker, AWS Lambda, Ubuntu, WordPress
Education
PhD in Computer Science
University of Sheffield - Sheffield, UK
Master's Degree in Physics
University of Santiago de Compostela - Santiago de Compostela, Spain
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