Kay A.-Let's Build Something Cool
Check rate
Experience
Talas Books
- Building REST APIs with Python and FastAPI, with PostgreSQL as the underlying database for a web app for early childhood language learning.
- Designing and implementing the application architecture and data models for, backend, and database layers.
Freelance Data Engineer/ Python Developer
University of Sussex
GRIP-ARMM Project
Built an end-to-end ETL pipeline to ingest unstructured public policy documents and transform them into a structured, queryable database for academic research on critical minerals.
Used Microsoft Fabric for creating data lakes, pipelines, and dashboards for analyses.
Backend / Data Engineer
Contiamo
- Built and maintained data pipelines and backend services for client projects using Python, SQL and cloud/data engineering technologies.
- Designed and implemented REST API integrations to ingest and process GeoJSON data, applying normalization and mapping logic to improve data quality and reliability.
- Implemented dbt-based data testing and transformation workflows, reducing data downtime and improving confidence in production datasets.
- Applied medallion architecture to modernize a legacy MSSQL Server / SSIS data platform for a fintech client
- Refactored legacy Python code to improve maintainability and performance, applying software engineering best practices (modular design, unit testing, version control).
Volunteer & Mentor
Pyladies, Djangogirls, Frauenloop
- Organize technical talks and hands-on hackathons to foster community learning.
- Mentored newcomers in Python and Git during events, helping them overcome initial learning barriers and contribute to open source community building
Analytics Engineer
Infarm
- Owned the end-to-end data lifecycle for IoT, sensor, inventory and logistics data, developing Python-based ETL/ELT pipelines and analytics datasets in GCP.
- Designed and maintained scalable BigQuery data pipelines and data models, supporting reliable reporting of operational and financial KPIs across the organisation.
- Developed analytical models in Looker/LookML, translating business requirements into reusable datasets and self-service analytics.
- Led data engineering for the Life Cycle Assessment and carbon accounting initiative, integrating environmental datasets into core business intelligence and sustainability reporting.
- Gained hands-on experience with Apache Airflow for workflow orchestration, including scheduled data-processing workflows.
Data Consultant
TD Reply
- Architected ETL pipelines using Python to extract social listening data via APIs, delivering actionable insights on retail sustainability campaigns. Used Looker/LookML for dashboards.
- Automated manual data mining and processing tasks using Pandas, Matplotlib, and Excel, reducing processing time by 40% and cutting rollout days for new analytical projects.
- Empowered the team to focus on higher-level strategic analysis by eliminating repetitive manual work.
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Retail, Agriculture, Banking and Finance, Education, and Metals and Mining.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Business Intelligence, Sustainability Management, Quality Assurance, Product Development, and Research and Development.
Summary
I am a full stack data engineer with 3+ years of experience building ETL/ELT pipelines, warehouses, data models and cloud-based data solutions using Python, SQL and modern data engineering tooling. I have also worked on dashboards and analytics to help teams get insights. Always happy to work with stakeholders and teams to make their data requests come true.
Skills
- Databases: Postgresql, Bigquery, Snowflake, Ms Sql Server, Microsoft Fabric
- Cloud & Infrastructure: Azure, Aws, Gcp, Terraform, Docker, Helm, Jenkins, Github Actions
- Data Quality & Observability: Grafana, Datahub, Great Expectations, Dbt, Testing Frameworks
- Ai & Analytics: Openai, Haystack, Langfuse, Ollama, Looker, Tableau, Power Bi, Metabase
- Programming: Python, Pyspark, Sql, Linux, Oop, Git, Data Modelling, Restapis
Languages
Education
University of York
MSc · Computer Science · York, United Kingdom
Hochschule für nachhaltige Entwicklung
MSc · Global Change Management · Germany
University of the Philippines
BA · Comparative Literature · Philippines
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Kay is based in London, United Kingdom.
Kay speaks the following languages: German (Advanced), English (Advanced), Tagalog (Advanced).
Kay has at least 9 years of experience. During this time, Kay has worked in at least 5 different roles and for 6 different companies. The average length of individual experience is 1 year and 4 months. Note that Kay may not have shared all experience and actually has more experience.
Based on recent experience, Kay would be well-suited for roles such as: Freelance Data Engineer/ Python Developer, Backend / Data Engineer, Volunteer & Mentor.
In recent years, Kay has worked for Talas Books, University of Sussex, Contiamo, Pyladies, Djangogirls, Frauenloop, and Infarm.
Kay is most experienced in industries like Information Technology, Retail, and Agriculture. Kay also has some experience in Banking and Finance, Education, and Metals and Mining.
Kay is most experienced in business areas like Information Technology, Business Intelligence, and Sustainability Management. Kay also has some experience in Quality Assurance, Research and Development, and Product Development.
Kay has recently worked in industries like Information Technology, Agriculture, and Banking and Finance.
Kay has recently worked in business areas like Information Technology, Business Intelligence, and Sustainability Management.
Kay holds a Master in Computer Science from University of York, a Master in Global Change Management from Hochschule für nachhaltige Entwicklung and a Bachelor in Comparative Literature from University of the Philippines.
Kay will be available part-time from September 2026.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 12 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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