Jordi Llonch, Developer in Melbourne, Victoria, Australia
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Jordi Llonch

Verified Expert  in Engineering

Bio

A developer since 1992, Jordi has created projects for multiple sectors: leading multinationals, academia, and government bodies. He has led and scaled technical teams focussing on product stability, performance, and connecting descriptive requirements and acceptance tests using plain language. Jordi has developed high-performance, distributed projects, security, data processing, and automation. He has also contributed to open-source projects: Elasticsearch, Chef, GitLab, and others.

Portfolio

Abov Group
Python, Elm, Architecture, Terraform, GitHub, GraphQL, Amazon Cognito...
Gartner
Relational Databases, Data Modeling, Go, PHP, Amazon DynamoDB, Amazon Aurora...
World’s Leading Manufacturer of Construction and Mining Equipment
Azure Search, Azure, Microservices Architecture, Microservices, Architecture...

Experience

  • SQL - 20 years
  • Linux - 20 years
  • Python - 20 years
  • APIs - 20 years
  • Elasticsearch - 12 years
  • Go - 10 years
  • Web Scraping - 10 years
  • Docker - 5 years

Availability

Part-time

Preferred Environment

Cloud, Cucumber, Kubernetes, Docker, Terraform, Git, Python, Unix, Go

The most amazing...

...thing I've built is an ML-inference engine, implementing a graph database from scratch into production with continuous integration, delivery, and orchestration.

Work Experience

Full-stack Engineer and Architect

2023 - 2024
Abov Group
  • Architected and developed a scalable SaaS platform for finance clients, supporting 15,000+ users within the first year.
  • Designed and implemented a secure, efficient database model to handle accounting data for annual report generation, optimizing retrieval speeds by 30%.
  • Handled the technical requirements to obtain certifications and third-party service approvals.
  • Built and tested robust back-end features in Python and Elm, ensuring high code quality and adherence to industry best practices.
Technologies: Python, Elm, Architecture, Terraform, GitHub, GraphQL, Amazon Cognito, Financial Accounting, Financial Transactions, Performance, High-load, Scalability, FastAPI, SQLAlchemy, Alembic, Playwright, Docker Compose, Webhooks, Serverless Architecture, Xero API, Python 2, WebSockets, GitHub Actions, System Architecture, AWS SDK, TensorFlow

Data Modeling Engineer

2022 - 2022
Gartner
  • Migrated a legacy workflow to a modern distributed system for a global IT consulting group, significantly increasing efficiency and scalability.
  • Analyzed the legacy system and identified areas for improvement; developed and implemented a plan to refactor the process.
  • Created tools to semi-automate documenting a database, resulting in increased efficiency and effectiveness for data management. Documentation was updated automatically to Confluence on each migration.
  • Created an infrastructure for running machine learning models on call transcripts, to determine call quality and analyze large volumes of data, including feature extraction and model deployment.
Technologies: Relational Databases, Data Modeling, Go, PHP, Amazon DynamoDB, Amazon Aurora, Microservices Architecture, Microservices, Architecture, System Architecture Design, DevOps, GitHub, Amazon S3 (AWS S3), Distributed Systems, Jira, Cloud Storage, AWS IAM, Cloud Architecture, Software Architecture, ETL, Git, Command-line Interface (CLI), Amazon Web Services (AWS), Data Architecture, REST APIs, CI/CD Pipelines, Web Scraping, Data Scraping, REST, GraphQL, Containerization, API Integration, Data Science, Data Engineering, Data Visualization, Web Development, Full-stack, Scalability, SQLAlchemy, Docker Compose, Flask, Serverless Architecture, SpaCy, WebSockets, GitHub Actions, System Architecture, AWS SDK, TensorFlow, Hugging Face

Search Management

2019 - 2021
World’s Leading Manufacturer of Construction and Mining Equipment
  • Implemented a search analysis to understand and optimize performance in search queries.
  • Provided recommendations and best practices using search indices.
  • Improved performance on periodic ingestion-data processes.
Technologies: Azure Search, Azure, Microservices Architecture, Microservices, Architecture, System Architecture Design, Back-end, DevOps, GitHub, Amazon S3 (AWS S3), Distributed Systems, Jira, Cloud Storage, AWS IAM, Cloud Architecture, Software Architecture, ETL, Git, Command-line Interface (CLI), Amazon Web Services (AWS), Data Architecture, REST APIs, MQTT, CI/CD Pipelines, Data Scraping, REST, Containerization, API Integration, gRPC, Artificial Intelligence (AI), Data Science, Data Engineering, Web Development, Full-stack, Java, Automated Testing, Performance, High-load, Scalability, Docker Compose, Flask, Webhooks, Python 2, SpaCy, Named-entity Recognition (NER), WebSockets, GitHub Actions, AWS SDK, TensorFlow

Senior Back-end Developer

2018 - 2019
Leading Multinational Professional Services (under NDA)
  • Architected and developed a high-performance data ingestion system to infer knowledge from vendor-agnostic robotic process automation.
  • Ideated and implemented a development lifecycle, starting with requirement definition in plain English, turning requirements into automated acceptance steps with automated integration (CI), delivery (CD), and platform orchestration.
  • Developed tools and processes for team members to improve performance and product stability.
Technologies: Robotic Process Automation (RPA), Amazon Web Services (AWS), Redis, Terraform, Elasticsearch, Kubernetes, Go, PostgreSQL, Kibana, Logstash, logstash-forwarder, Microservices Architecture, Microservices, Architecture, System Architecture Design, Back-end, React, DevOps, Full-stack Development, GitHub, Amazon S3 (AWS S3), Distributed Systems, Jira, Cloud Storage, AWS IAM, Automation, Cloud Architecture, Software Architecture, ETL, Git, Command-line Interface (CLI), REST APIs, CI/CD Pipelines, Web Scraping, Data Scraping, REST, Containerization, .NET, Google Cloud Platform (GCP), API Integration, gRPC, Fintech, TradingView, Forex Trading, Data Science, Web Development, Full-stack, Java, Automated Testing, SaaS, Performance, High-load, Scalability, FastAPI, SQLAlchemy, Alembic, Docker Compose, Flask, Webhooks, AWS SDK

Data Architect

2017 - 2018
Computer Security Company (under NDA)
  • Architected and developed a machine learning inference system using graph theory.
  • Implemented a wide variety of data ingesters from online data sources using different strategies: Crawling, API, and more.
  • Implemented strong development lifecycle using strong testing, CI/CD for the team.
Technologies: GRAPH, Redis, Kubernetes, Docker, Elasticsearch, APIs, Microservices Architecture, Microservices, Architecture, System Architecture Design, IT Project Management, React, DevOps, Full-stack Development, GitHub, Amazon S3 (AWS S3), Distributed Systems, Cloud Storage, AWS IAM, Automation, Natural Language Processing (NLP), Cloud Architecture, Software Architecture, System Design, ETL, Git, Command-line Interface (CLI), Amazon Web Services (AWS), Internet of Things (IoT), REST APIs, Technical Leadership, CI/CD Pipelines, Data Scraping, REST, Containerization, .NET, Google Cloud Platform (GCP), API Integration, Data Science, Data Engineering, Full-stack, SaaS, Performance, High-load, Scalability, SQLAlchemy, Alembic, Docker Compose, Webhooks, Python 2, SpaCy, Named-entity Recognition (NER), WebSockets, System Architecture, AWS SDK

CTO

2013 - 2017
Nitidum Pty, Ltd.
  • Ideated, architected, and built a data cluster able to identify business opportunities using online information.
  • Built crawling engines to feed information. Some of the work turned into open-source projects and contributions to existing ones.
  • Managed infrastructure at a scale using automated provisioning and deployment using Chef.
  • Integrated instrumentation in Elasticsearch before it became an industry-leading solution for the purpose (ELK).
Technologies: Scrapy, PostgreSQL, Redis, Elasticsearch, Chef, Hadoop, Python, Architecture, CTO, DevOps, Full-stack Development, GitHub, Amazon S3 (AWS S3), Distributed Systems, Cloud Storage, Cloud Architecture, Software Architecture, System Design, Trading, ETL, Git, Command-line Interface (CLI), REST APIs, MQTT, Automated Trading Software, Technical Leadership, Project Management, Web Scraping, Data Scraping, Containerization, Cryptocurrency, API Integration, Trading Systems, MetaTrader, C, MetaTrader 5, MetaTrader 4, Artificial Intelligence (AI), Data Science, Data Visualization, Web Development, Full-stack, Team Leadership, SQLAlchemy, Docker Compose, Python 2, Named-entity Recognition (NER), Algorithmic Trading, Interactive Brokers API, WebSockets, System Architecture, AWS SDK

CTO

2014 - 2016
Education Sector
  • Led the technical direction of the organization.
  • Supported a team of developers.
  • Set up an onboarding process.
  • Automated the development lifecycle.
Technologies: Redis, RabbitMQ, SQL, JavaScript, Node.js, Elasticsearch, Docker, Architecture, CTO, DevOps, Full-stack Development, GitHub, Cloud Architecture, Software Architecture, System Design, Git, Command-line Interface (CLI), Technical Leadership, Project Management, Data Scraping, Artificial Intelligence (AI), Data Science, Data Visualization, Web Development, Full-stack, Team Leadership, SaaS, MongoDB, System Architecture, AWS SDK

Analyst, Developer

2007 - 2013
Resco Manager
  • Created a large modular web application using Django with Google Earth integration.
  • Designed and implemented variable data structures to process the complexity of the business requirements.
  • Prepared the teaching materials for the deployment distributed across multiple countries.
Technologies: Google Earth, Google Earth KML, MySQL, Django, Architecture, Full-stack Development, GitHub, Automation, Cloud Architecture, Software Architecture, System Design, Git, Command-line Interface (CLI), Internet of Things (IoT), Web Development, Full-stack, Python 2, System Architecture

Technical Manager

2000 - 2013
AtCUBIC
  • Created the first large-scale automated web hosting platform in Spain.
  • Implemented high availability SLA for network and operations.
  • Created a service to orchestrate Linux servers in the pre-cloud era.
Technologies: Red Hat Linux, Unix, Python, Linux, Architecture, CTO, Full-stack Development, GitHub, Automation, Command-line Interface (CLI), Web Development, Full-stack, Team Leadership, System Architecture

Experience

RPA Aggregator

An RPA-agnostic aggregator for monitoring distributed-process automation with complete API support.

Built using Go, ElasticSearch, Beats, and Logstash on a CI/CD pipeline deploying automatically into Kubernetes clusters using Terraform.

Ontology-based Inference System

Built an ontology-based inference system for a security company, using a graph database and Elasticsearch on a Kubernetes cluster.

Used Prometheus and Grafana for instrumentation, Sentry for exception reporting, and Beats and Logstash for log centralization.

High-capacity Broad Crawler

Built a high-capacity broad crawler for a finance-sector company to identify potential business opportunities.

Data were indexed in an Elasticsearch cluster built on a Kubernetes cluster, instrumented with Prometheus and Grafana with exceptions handled by Sentry and logs centralized with Logstash and Beats.

RescoManager

An open-source, web-based software application for managing technical, financial, and logistical aspects of remote area-electrification projects.

Developed a blockchain-precursor technology to synchronize disconnected data pools.

Django Tastypie | Elasticsearch Support

https://github.com/llonchj/django-tastypie-elasticsearch
Elasticsearch support for Django Tastypie. Exposing Elasticsearch data through the Tastypie REST interface, allowing data in indices to be edited. This project was part of an experiment to integrate Elasticsearch information with Django.

ScraPy Sentry Plugin

https://github.com/llonchj/scrapy-sentry
Scrapy-Sentry is an open-source project that allows the integration of Sentry error tracking with Scrapy, a popular Python framework for web scraping. This integration enables users to track and report errors during web scraping to Sentry, a cloud-based error-tracking platform. With Scrapy-Sentry, developers can easily set up error tracking for their Scrapy projects, giving them more visibility into the performance and stability of their scrapers and enabling them to identify and fix issues as they arise quickly.

Plugin for YOURLS URL Shortener

https://github.com/llonchj/yourls_plugins
A plugin to forward a query string in a shortened URL.

Hypertable Cookbook for Chef

https://github.com/llonchj/chef_hypertable
A cookbook for a Hypertable distributed database like Google's BigTable.

Munin Plugin for Hypertable

https://github.com/llonchj/hypertable-munin
A Munin plugin to monitor a Hypertable cluster.

Financial Arbitrage Engine

A high-speed financial arbitrage engine to profit from different markets and exchange price inefficiencies. Built using Go and InfluxDB as a main time series database and using Grafana as the main user interface.

MT5 Algorithmic Expert Advisors (Trading Robots)

Built multiple expert advisors for the MT5 platform using multiple decisions based on technical indicators, with filters and equity management protection. The algorithm can trade currencies, crypto, and stocks.

Education

2013 - 2014

Coursera Certificate Degree in Data Analysis

Johns Hopkins University - Remote

2013 - 2013

Coursera Certificate Degree in Big data

Indian Institute of Technology Delhi - Remote

2013 - 2013

Coursera Certificate Degree in Machine Learning

Stanford - Remote

Skills

Libraries/APIs

Node.js, Tastypie, jQuery, Beautiful Soup, Django ORM, REST APIs, SQLAlchemy, SpaCy, Interactive Brokers API, Scikit-learn, SciPy, Matplotlib, jQuery Mobile, AngularUI, jQuery UI, ZeroMQ, Protobuf, React, Pydantic, Playwright, Xero API, Backbone.js, Vue 2, Google Maps, TensorFlow

Tools

Logstash, Apache HTTP Server, RabbitMQ, Postfix, NGINX, ActiveMQ, Chef, Haystack, Vagrant, Terraform, Cucumber, GitHub, Jira, Docker Compose, Named-entity Recognition (NER), AWS SDK, Git, Terminal, Azure Search, Azure Kubernetes Service (AKS), Google Kubernetes Engine (GKE), BrowserStack, AWS IAM, MQTT, ELK (Elastic Stack), Open Office, Scraping Hub, TextMate, OpenRefine, Sentry, GIS, Grafana, Kibana, logstash-forwarder, Amazon Cognito

Languages

Go, SQL, HTML5, Python, Python 3, Python 2, JavaScript, Ruby, GraphQL, C++, C, PHP, Java, Elm

Frameworks

Scrapy, Django, Flask, GeoDjango, Selenium, gRPC, Alembic, Django REST Framework, .NET, Hadoop, Bootstrap, AngularJS

Paradigms

Functional Programming, Testing, Automation, REST, E2E Testing, Management, Continuous Deployment, Continuous Delivery (CD), Continuous Integration (CI), Test Automation, Microservices Architecture, Microservices, DevOps, Automated Testing, Agile, ETL, Test-driven Development (TDD), Serverless Architecture

Platforms

MacOS, Docker, Linux, MetaTrader, MetaTrader 5, Amazon Web Services (AWS), Red Hat Linux, AWS Lambda, Kubernetes, Apache Kafka, Google Cloud Platform (GCP), MetaTrader 4, Unix, Azure, Azure Functions

Storage

JSON, Redis, BigTable, MySQL, PostgreSQL, MongoDB, Hypertable, NoSQL, Elasticsearch, Amazon S3 (AWS S3), Memcached, Azure Cache, Graph Databases, GeoServer, Google Cloud, HBase, SQLite, InfluxDB, Relational Databases, Amazon DynamoDB, Amazon Aurora

Industry Expertise

Trading Systems, Project Management

Other

Scraping, Integration, Unix/Linux Virtualization, Virtualization, HTTP, Dovecot, A/B Testing, UI Testing, People Management, Web Scraping, Prometheus, Grafana 2, Robotic Process Automation (RPA), QA Automation, Software Development, Architecture, IT Project Management, Back-end, CTO, Distributed Systems, Cloud Storage, Software Architecture, System Design, Command-line Interface (CLI), Data Architecture, Automated Trading Software, Technical Leadership, Data Scraping, Containerization, API Integration, Data Science, Data Engineering, FastAPI, Performance, High-load, Scalability, Algorithmic Trading, WebSockets, System Architecture, APIs, Cloud, Pipelines, Serverless, Machine Learning, BIND9, GeoJSON, Kubernetes Operations (kOps), Continuous Monitoring, Automation Tools, System Architecture Design, Full-stack Development, Natural Language Processing (NLP), Cloud Architecture, Trading, Internet of Things (IoT), CI/CD Pipelines, Cryptocurrency, TradingView, Forex Trading, Artificial Intelligence (AI), Data Visualization, Web Development, Full-stack, Solution Architecture, Geospatial Data, Mapping, Team Leadership, SaaS, Webhooks, GitHub Actions, GRAPH, Google Earth KML, Google Earth, Fintech, Data Analysis, Big Data, Instrumentation, Beats, GraphDB, Large-scale Web Crawlers, Web Crawlers, Monitoring, Data Modeling, Financial Accounting, Financial Transactions, Hugging Face

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