05/23/2025 updated
100 % available
Senior Backend Engineer, Data Engineer, Fullstack Engineer – Contract roles only Remote
Kosice, Slovakia
Worldwide
Master degree Cybernetics and control systemsJava (Programming Language)Application Programming Interfaces (APIs)Amazon Web ServicesCloud ComputingContinuous IntegrationApache HadoopInfrastructure ManagementPython (Programming Language)PostgreSQLNode.JsProduction SystemsNext.jsData StreamingReactJSApache Spark
Senior Backend Engineer | Fullstack & Data Capable | Node.js, Go, Kafka, AWS
Contractor with 10+ years delivering production systems across backend, data, and fullstack domains. Specialized in building event-driven platforms, APIs, and streaming pipelines using Node.js, Go, Kafka, and AWS. Comfortable leading greenfield builds and working solo or embedded in agile teams.
Backend: Node.js, Go, Kotlin, Java, Python, Spring Boot, REST, GraphQL
Data: Kafka, Kafka Streams, Flink, Spark, Hadoop, Redshift, PostgreSQL
Frontend: React, Angular, Next.js
Cloud/Infra: AWS, Terraform, Kubernetes, CI/CD
? Open to backend, streaming, or fullstack remote contract roles (EU/global)
? WhatsApp: +421 919 328 316 | ?? Alt: +421 948 681 377
Contractor with 10+ years delivering production systems across backend, data, and fullstack domains. Specialized in building event-driven platforms, APIs, and streaming pipelines using Node.js, Go, Kafka, and AWS. Comfortable leading greenfield builds and working solo or embedded in agile teams.
Backend: Node.js, Go, Kotlin, Java, Python, Spring Boot, REST, GraphQL
Data: Kafka, Kafka Streams, Flink, Spark, Hadoop, Redshift, PostgreSQL
Frontend: React, Angular, Next.js
Cloud/Infra: AWS, Terraform, Kubernetes, CI/CD
? Open to backend, streaming, or fullstack remote contract roles (EU/global)
? WhatsApp: +421 919 328 316 | ?? Alt: +421 948 681 377
Languages
EnglishFluent
Project history
I worked for one of the global players in global cloud communication.
Design, Develop, Test, Deploy => Full-stack development
Microservice, Event-driven systems
- Kotlin, Java 15+, Spring, Spring boot, Jpa, Hibernate
- React js, npm, Node.js, (express.js, koa.js), strapi
- Javascript, Typescript
- ELK stack (Elastic search, Logstash, Kibana), Redis, Hazelcast
- SQL Server, Apache Kafka, Artemis, RabbitMQ
Design, Develop, Test, Deploy => Full-stack development
Microservice, Event-driven systems
- Kotlin, Java 15+, Spring, Spring boot, Jpa, Hibernate
- React js, npm, Node.js, (express.js, koa.js), strapi
- Javascript, Typescript
- ELK stack (Elastic search, Logstash, Kibana), Redis, Hazelcast
- SQL Server, Apache Kafka, Artemis, RabbitMQ
ING. ADAM
LUPTAK
SENIOR SOFTWARE ENGINEER
ABOUT
Solution Architect/ Senior Software Engineer / Lead Developer / Team Lead
with a proven history of working in software development, payments, banking
and financial services industries, Risk management, Big data, and Streaming
processing. Lead and empower the team of software engineers and QA
testers to develop modern cloud-ready applications. I'm skilled in several
technologies such as Java (Spring), Kotlin, Javascript, TypeScript, and
Hadoop, Kafka work in an Agile environment using CI CD (Jenkins, GoCD),
deploying and supporting applications in cloud AWS, Azure. Strong
engineering professional with a Master's degree in Cybernetics and
Information Control Systems focused on analyzing, designing, and
implementing control algorithms for process control from the Technical
University of Košice.
LUPTAK
SENIOR SOFTWARE ENGINEER
ABOUT
Solution Architect/ Senior Software Engineer / Lead Developer / Team Lead
with a proven history of working in software development, payments, banking
and financial services industries, Risk management, Big data, and Streaming
processing. Lead and empower the team of software engineers and QA
testers to develop modern cloud-ready applications. I'm skilled in several
technologies such as Java (Spring), Kotlin, Javascript, TypeScript, and
Hadoop, Kafka work in an Agile environment using CI CD (Jenkins, GoCD),
deploying and supporting applications in cloud AWS, Azure. Strong
engineering professional with a Master's degree in Cybernetics and
Information Control Systems focused on analyzing, designing, and
implementing control algorithms for process control from the Technical
University of Košice.
I worked on large-scale corporate internet baking solutions for Asian
countries. Modern modular event-driven micro-services solution.
- Java Spring (spring data, spring integration, spring boot, spring MVC,
spring cloud...), Gradle,
bower, Oracle DB, MySql DB, Webpack, Kafka
countries. Modern modular event-driven micro-services solution.
- Java Spring (spring data, spring integration, spring boot, spring MVC,
spring cloud...), Gradle,
bower, Oracle DB, MySql DB, Webpack, Kafka