Wojciech Fiszer
Verified Expert in Engineering
Java Developer
Warsaw, Poland
Toptal member since April 9, 2021
Wojciech is a software engineer specializing in building highly performant and reliable back-end services. He has more than six years of experience in software engineering. During that time, Wojciech had the opportunity to learn a lot about back-end engineering, big data streaming processing, and front-end development. He has been fortunate to work with some amazing teams during his career and knows what a great team looks like.
Portfolio
Experience
- Java - 8 years
- Apache Maven - 5 years
- Amazon Web Services (AWS) - 5 years
- Spring - 5 years
- Hibernate - 4 years
- Kafka Streams - 1 year
- Apache Kafka - 1 year
- React - 1 year
Preferred Environment
Java, Spring, Apache Kafka, React, Apache Maven, Git, HTML, SQL, Docker, Amazon Web Services (AWS)
The most amazing...
...project I've done was building a streaming platform from scratch based on Kafka Streams, which creates user profiles based on their website activity.
Work Experience
Staff Software Engineer
Lean Technologies
- Developed distributed open banking data platform with Java and Spring.
- Worked in a startup environment using the Agile and Scrum methodology.
- Participated in the design of open banking solutions built on top of bank data.
Senior Software Engineer
Tink
- Developed a platform to orchestrate hundreds of bank integrations.
- Optimized the request processing flow of asynchronous tasks with user interaction involved.
- Participated in the design of flow and architecture of complex bank integrations.
Senior Java Developer
Danske Bank
- Wrapped legacy systems with modern Java applications.
- Supported the release and deployment of new business processes.
- Understood and transformed business requirements into technical tasks.
Software Engineer
Bosch
- Developed an app that allows the user to create, update, archive, and implement versioning of instructions for the production process in plants.
- Took over a legacy codebase and made significant contributions.
- Refactored a legacy codebase to make it more maintainable and stable which resulted in decreasing response times significantly and a more responsive and stable user experience.
Java Developer
StepStone
- Developed a production-ready streaming pipeline for creating user profiles based on their activity on the website.
- Created several integrations between internal and external services then successfully implemented them to production and monitored their stability.
- Integrated services which led to a significant increase of applications for job offers.
- Extended the integration to other countries and successfully handled the load.
Experience
Personal Website
https://fiszer.devEducation
Master's Degree in Computer Science
Polish-Japanese Academy of Information Technology - Warsaw, Poland
Master's Degree in Civil Engineering
Warsaw University of Technology - Warsaw, Poland
Certifications
AWS Solutions Architect Associate
Amazon Web Services
Oracle Certified Professional
Oracle
Oracle Certified Associate
Oracle
Skills
Libraries/APIs
REST APIs, React, JDBC, Redux Form, Java Message Service (JMS)
Tools
Apache Maven, Amazon Simple Queue Service (SQS), Kafka Streams, IntelliJ IDEA, Git, AutoCAD, Bitbucket, Jira, NPM, Bazel, RabbitMQ, Apache Tomcat, Astro
Languages
Java, Java 8, Python, JavaScript, HTML, CSS, TypeScript, TypeScript 3, Kotlin, SQL
Frameworks
Spring Boot, Spring, Hibernate, Bootstrap 3, Redux, gRPC, GWT, Tailwind CSS, Next.js
Storage
Databases, MySQL, PostgreSQL, NoSQL, Oracle 12c, Amazon S3 (AWS S3), Redis
Platforms
Amazon Web Services (AWS), Apache Kafka, MacOS, Red Hat OpenShift, Docker, Amazon EC2, AWS Lambda, Kubernetes
Paradigms
Enterprise Application Architecture, Scrum, REST
Other
HTTP, Message Queues, APIs, Back-end Development, Architecture, Integration, SDKs, Full-stack Development, GitHub Actions, Civil Engineering, Construction Engineering, Software Development, Android Development, Groovy Scripting, Enterprise Application Design, Algorithms, SQL Server 2015, Spring Cloud
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