Hire Freelance Apache Spark Developers and Engineers
Mateusz Cieślak
Mateusz is an experienced data engineer with more than 20 projects delivered in areas of data analytics and IT implementations. He is an expert in big data technologies (Hadoop, Python, Apache Spark, Azure) and SQL (T-SQL) and is known for building high-performing ETL/ELT data pipelines. At PwC, Mateusz developed a large volume data mart to profile over 300 million citizens by more than 500 variables and an analytics engine to recommend optimal promotional actions with more than 20,000 products.
Show MoreSebastian Brestin
Since 2012, Sebastian has been developing distributed systems for various platforms ranging from Solaris, IBM AIX, HP-UX to Linux and Windows. He's worked with various technologies such as Apache Spark, Elasticsearch, PostgreSQL, RabbitMQ, Django, and Celery to build data-intensive scalable software. Sebastian is passionate about delivering high-quality solutions and is extremely interested in big data challenges.
Show MoreRadek Ostrowski
Radek is a certified Toptal blockchain engineer particularly interested in Ethereum and smart contracts. In the fiat world, he is experienced in big data and machine learning projects. He is a triple winner in two different international IBM Apache Spark competitions, co-creator of PlayStation 4's back end, a successful hackathon competitor, and a speaker at conferences in Australia, Poland, and Serbia.
Show MoreDhruvi Pandya
Dhruvi is a data engineering professional with seven years of industry experience who started as a back-end developer. Her expertise lies in building, maintaining, and optimizing data pipelines, mostly with stacks such as Spark, Airflow, Storm, Snowplow, Docker, and Kafka. She has hands-on experience with AWS services like EC2, EMR, Elastic Beanstalk, Athena, and Redshift. Dhruvi is also well-versed in Agile development and sprint planning methodologies.
Show MoreTiago de Holanda Cavalcanti
Tiago is a senior data scientist and software engineer who excels at implementing big data ETLs with Apache Spark and creating statistical models to solve challenging real-world problems. In his free time, he enjoys creating trading bots for stock and crypto exchanges.
Show MoreDaniel Stahl
Daniel is a full-stack developer with nine years of real-world experience in financial modeling and analytics and three years of experience developing big data applications in Spark and Hadoop. He currently leads a machine learning operations team that designs continuous delivery services for machine learning applications. While professionally focused on data and analytics, Daniel has a passion for building delightful interfaces to enable the broad consumption of complex mathematical models.
Show MoreAdam Ivansky
Adam has nine years of experience as an engineer and two years of experience as a tech load. His tools of choice include Python 3, Snowflake, Spark, and SQL. His main focus areas include ETLs and machine learning marketing pipelines. Adam is able to communicate effectively with both highly technical and non-technical specialists.
Show MoreKarip Kaya
Karip is a data engineer and developer with 18 years of experience in the IT industry and six years in the freelance community. He specializes in Java, Scala, and Python and is skilled at Hadoop, Spark, and PL/SQL. Karip enjoys working on the back end, database, and big data projects.
Show MoreSelahattin Gungormus
Selahattin is a data engineer with several years of hands-on experience building scalable data integration solutions using open-source technologies. He excels at developing data applications using distributed processing platforms such as Hadoop, Spark, and Kafka. Selahattin also has practical experience in cloud architecture types such as AWS and Azure, as well as developing microservices using Python and JavaScript frameworks
Show MoreAdrian Dominiczak
Adrian is a senior big data engineer with nearly a decade of professional experience. Adrian started his career as a software engineer at Samsung's R&D and has worked on a range of projects from machine learning and big data engineering in banking and pharmaceutical industries to big data and cloud architecting at Santander and Lingaro. Adrian's areas of expertise lie mainly with Hadoop and Spark.
Show MoreFestus Asare Yeboah
Festus is a data and machine learning engineer with in-depth, hands-on technical expertise in data pipeline architecture. He excels at the design and implementation of big data technologies (Spark, Kafka, data lakes) and has a proven track record in consulting on architecture design and implementation.
Show MoreDiscover More Apache Spark Developers in the Toptal Network
Start Hiring