Senior Solution Architect
2019 - PRESENTPillar Base, Inc.- Developed an application to denormalize data from the relational database and stream it to an AWS DynamoDB single table.
- Worked on a proof of concept (POC) to assess the performance between Spark SQL, Presto DB, and Apache Drill with parquet files.
- Architected and developed integration solutions based on AWS Lambda, API Gateways, Cognito, WMS, Facebook Open Graph API, Google Ads API, BigCommerce, AWS DynamoDB, JavaScript, and TypeScript.
- Built a highly concurrent and fault tolerance back-end engine that handles over one million requests using Rust.
- Minted NFTs, integrated them with a website, and built a dApp.
Technologies: OpenAPI, BigCommerce API, TypeScript, Spark SQL, Amazon Cognito, AWS DynamoDB, AWS Lambda, Serverless, Rust, DApps, Ethereum, Solidity, Web3.js, Solution ArchitectureElasticSearch Expert
2021 - 2021Valence- Integrated Django with ElasticSearch. Built highly customizable indexes.
- Monitored and helped the team to deploy that solution.
- Analyzed the search result, adjusting the indexing parameters to update the priorities.
Technologies: Elasticsearch, Python 3, DjangoSenior eCommerce Integration Engineer
2020 - 2021Deliverr- Worked on a Serverless project to develop a REST API to integrate with a different store management API.
- Developed REST services to integrate with BigCommerce, Google Shopping, and Facebook Commerce.
- Used OAuth 2.0 and OIDC protocols to protect the API and manage the authentication and authorization with another eCommerce API.
Technologies: Serverless, AWS Lambda, Google Shopping, Facebook API, BigCommerce API, Koa, TypeScript, Node.jsSenior Scala Developer
2019 - 2020ReactiveCore- Architected and developed a solution to implement a worker thread pattern integrated with Apache Kafka.
- Rearchitected the microservices components to implement the service mesh (Istio) in Kubernetes over the Amazon EKS cluster.
- Built a real-time streaming solution on AWS using Kinesis and Glue. Developed a data model.
- Implemented Apache Spark streaming with Apache Kafka to support the data model.
- Integrated Apache Druid with Apache Kafka to implement time-series analytics on the Amazon EKS cluster.
- Worked on a POC and built a solution to ingest from Kafka, based on Rust concurrency.
Technologies: AWS Kinesis, React, Node.js, Istio, Kubernetes, Spark, Apache Kafka, AWS Glue, Amazon EKS, Go, Akka, Scala, RustSenior Data Engineer
2019 - 2019BCG GAMMA- Developed and optimized the Apache Airflow graph solution to support the data model.
- Packaged the solution using Docker and Docker Compose.
- Built a workflow in CircleCI to automate the building, packaging, and deploying processes.
- Developed a big data ETL solution on Azure Cloud, based on DataFactory and integrated with Data Lake Analytics.
Technologies: Docker Compose, CircleCI, Docker, Apache Airflow, PythonSenior Solution Architect
2019 - 2019CN Railway- Built real-time and batch processing ETL solutions based on the DataFactory.
- Architected and developed an event-driven application using Node.js, React, and GraphQL using Serverless tech.
- Built and architected an integration solution using Apache Kafka on the AWS EKS cluster with Azure Power BI.
- Designed a solution based on React and Node.js and deployed the solution using Docker and Kubernetes.
- Developed and architected a solution to stream the data into the data warehouse on Azure.
- Engineered interactive dashboards using Power BI with a data warehouse.
Technologies: Kubernetes, Node.js, React, Apache Spark, Apache Kafka, AWS EMR, Python, Scala, Java, Solution Architecture, Data WarehousingBig Data Architect
2016 - 2019Morgan Stanley- Architected and developed a big data ETL solution based on AWS EMR and AWS Kinesis.
- Built a knowledge graph using a triple store database and Elasticsearch.
- Created a data streaming solution using S3, Lambda functions, AWS Kinesis data streaming, and AWS EMR service.
- Helped develop an NLP solution to enhance and enrich features in the market data reports as a data analyst.
- Built an interactive data UI based on React and React D3 integrated with Azure Power BI.
- Developed a search engine for market data integrated with Elasticsearch and Apache Solr.
- Worked on a POC to compare the latency between C++ and Go.
- Built a highly concurrent and fault tolerance back-end engine that handles over 1 million requests using Rust.
Technologies: Deep Learning, AWS EMR, Machine Learning, Natural Language Processing (NLP), React, AWS Kinesis, Node.js, Python, Go, Java, Scala, RustBig Data Developer
2016 - 2016TD Bank- Developed a solution to three ETL big data projects using Apache Hive and Oozie.
- Worked as part of the team on extending Hadoop security functionality.
- Architected and developed a multi-threaded Java application to integrate a Linux local account with the Active directory, business requirement analysis, and sketching technical solution.
- Received “Act for Impact Award” for my work on a security project.
Technologies: Streaming, Spark, Hadoop, Go, Scala, Java
Ghassan Hallaq
Solution Architecture Developer in Montreal, QC, Canada
Member since May 16, 2019
Gus is passionate and curious about the latest tech trends and makes sure to be up-to-date with all useful tools, such as Java, Scala, JavaScript, TypeScript, Python, and Rust, to name a few. He aims to bring new solutions to today’s challenges in the realms of data warehouses and pipelines, eCommerce, eBPF, cryptocurrency, NFT, dApp, and Blockchain.
Ghassan is now available for hire
Portfolio
- Pillar Base, Inc.OpenAPI, BigCommerce API, TypeScript, Spark SQL, Amazon Cognito, AWS DynamoDB...
- ValenceElasticsearch, Python 3, Django
- DeliverrServerless, AWS Lambda, Google Shopping, Facebook API, BigCommerce API, Koa...
Experience
- Solution Architecture 8 years
- Scala 6 years
- Data Warehousing 5 years
- Node.js 5 years
- Python 3 5 years
- Rust 3 years
- Web3.js 1 year
- Solana 1 year
Availability
Part-time
Preferred Environment
Linux, AWS, Azure, Ethereum, Solana
The most amazing...
...integration solution I've built is based on techs like TypeScript/AWS Serverless/OAuth2 to integrate with BigCommerce, Google Shopping, and Facebook Commerce.
Employment
Experience
- Act for Impact Award
Awarded for my work on a security project.
- Market Adviser Chatbot
Python-based project to build a chatbot that will answer the client's questions regarding the security market. According to some ontologies, the project ingests market reports into the knowledge graph and uses SPARQL query language to interact with the knowledge graph.
- Marketing Ingeration Solution
Project-based on Node.js/TypeScript and serverless on AWS to build an integration solution between almost all the market places like BigCommerce, Google Shopping, Facebook Commerce, and amazon market place.
Skills
Languages
Snowflake, Java, Python, Scala, Python 3, Java 8, JavaScript, TypeScript, SQL, Rust, SPARQL, SolidityFrameworks
Serverless Framework, Presto DB, Spark, Apache Spark, Express.js, Next.js, AWS EMR, Akka, Koa, DjangoLibraries/APIs
Pandas, BigCommerce API, Facebook API, Stripe, React, REST APIs, PySpark, Node.js, Google Ads API, TensorFlow, Web3.js, NLTK, SpaCyTools
Apache Solr, AWS Glue, Amazon QuickSight, Auth0, Docker Compose, Spark SQL, Git, AWS Step Functions, Apache Airflow, Kafka Streams, Amazon EKS, Amazon Cognito, MetaMaskParadigms
Serverless Architecture, ETL, ETL Implementation & Design, Functional Programming, Service-oriented Architecture (SOA), Agile Software DevelopmentPlatforms
AWS Lambda, Oracle, Linux, Apache Kafka, Docker, Kubernetes, AWS Kinesis, Amazon Web Services (AWS), Azure, Blockchain, EthereumStorage
AWS DynamoDB, Elasticsearch, Redshift, PostgreSQL, NoSQL, Graph Databases, MySQL/MariaDB, MarkLogicOther
Data Analysis, Common Data Service, Data Warehousing, Serverless, ETL Development, Big Data Architect, Big Data, Natural Language Processing (NLP), AWS, Data Analytics, AWS Cloud Development Kit (CDK), Data Vaults, Bluebird, Data Warehouse Design, Data Engineering, Data Architecture, Software Architecture, Service Meshes, Architecture, Solution Architecture, Algorithms, Machine Learning, Deep Learning, Payment APIs, Solana, Cryptocurrency, Ethereum Smart Contracts, Non-fungible Tokens (NFT), Smart Contracts, DBT, Tokenomics, Tokenization, Token Design, Natural Language Understanding (NLU), Ontologies, Star Dog, DApps
Education
- Diploma in Computer Systems Analyst1994 - 1996Accad Institute - Aleppo, Syria
- Progress Towards a Bachelor's Degree in Mathematics and Physics1987 - 1990Aleppo University - Aleppo, Syria
Certifications
- Manager of Quality/Organizational ExcellenceOCTOBER 2011 - DECEMBER 2014American Society for Quality
- Quality EngineerJUNE 2011 - JUNE 2014American Society for Quality
- HACCP AuditorMARCH 2011 - JUNE 2014American Society for Quality
- Six Sigma Black BeltJUNE 2010 - JUNE 2013American Society for Quality
- Quality AuditorDECEMBER 2009 - DECEMBER 2012American Society for Quality
- Project Management ProfessionalSEPTEMBER 2008 - SEPTEMBER 2017Project Management Institute
- Sun Certified Business Component DeveloperOCTOBER 2007 - PRESENTSun Certification
- System Administrator/MessagingJUNE 2005 - PRESENTMicrosoft
- Sun Certified Web Component DeveloperAPRIL 2004 - PRESENTSun Certification
- Level I CertificationFEBRUARY 2004 - PRESENTLinux Professional Institute
- Microsoft Certified TrainerJANUARY 2004 - JANUARY 2014Microsoft
- System AdministratorJUNE 2003 - PRESENTMicrosoft
- Sun Certified DeveloperMARCH 2003 - PRESENTSun Certification
- Oracle 9i Database Administrator Certified ProfessionalDECEMBER 2002 - PRESENTOracle
- Oracle 9i Database Administrator Certified AssociateNOVEMBER 2002 - PRESENTOracle
- Cisco Certified Design Associate - CCDAMARCH 2002 - MARCH 2004Cisco Career Certification
- Cisco Certified Network Associate - CCNADECEMBER 2001 - DECEMBER 2003Cisco Career Certification
- Sun Certified ProgrammerAUGUST 2001 - PRESENTSun Certification
- Professional System EngineerAPRIL 2001 - PRESENTMicrosoft
- Network+NOVEMBER 2000 - PRESENTCompTIA Certification Program
- A+NOVEMBER 2000 - PRESENTCompTIA Certification Program
