Sam Bokai Full Stack Software Engineer
Work Experience
Sep 2020 – presentCologne, Germany
Fernpunkt, Freelance Software Engineer
  • •Project work as a freelance software developer
  • •Development of web applications, APIs, IoT systems, desktop apps, and other software projects
  • •Clients in railway, finance, IT security, and retail sectors
  • •Technologies: Node.js, React, Next.js, Firebase, AWS
    • Jan 2025 – Jun 2025Düsseldorf, Germany
    Vorwerk, Software Engineer (External Consultant)
  • •Developed a web-based, on-device recipe platform in preparation of the release of the Thermomix TM7 kitchen appliance
    • Mar 2024 – Sep 2024Rothenburg, Switzerland
    Pistor AG, Software Engineer (External Consultant)
  • •Technologies: Node.js, TypeScript, AWS, Kubernetes, Cassandra, PostgreSQL, Rest API Development, GitLab CI/​CD
    • Aug 2023 – Jan 2024Frankfurt a.M., Germany
    DB Regio AG, Software Engineer (External Consultant)
  • •Designed and implemented data pipelines and ETL processes with Kafka and AWS Lambda to move and transform large-scale operational data.
  • •Technologies: AWS Lambda, Kafka, Kubernetes, TypeScript, Node.js
    • Jan 2022 – Aug 2023Cologne, Germany
    RTL Deutschland GmbH⁠, Senior Software Engineer (External Consultant)
  • •Developed the backend for multiple TV-native apps (Samsung Tizen, LG, Roku, Vodafone)
  • •Managed and instructed 3 external software teams who were tasked with the development of the frontends
  • •Technologies: Node.js, Nest.js, AWS Lambda, Cloudfront, DynamoDB, Kubernetes, React
    • Oct 2021 – Dec 2021Frankfurt, Germany
    DB Systel GmbH (Deutsche Bahn AG)⁠, Software Engineer (External Consultant)
  • •Developed and maintained a serverless IoT application for logistics subsidiary DB Cargo AG using AWS Lambda
  • •Enabled the end customer to track and trace their cargo shipments with high accuracy and availability
  • •Technologies: AWS Lambda, Node.js, TypeScript, Kafka
    • Jan 2021 – Aug 2021Berlin, Germany
    Contentful GmbH⁠, Software Engineer
  • •Maintained and extended the official Javascript and Typescript SDKs
  • •Architected internal and public APIs with millions of requests per hour
  • •Designed and implemented parts of the official web app, based on React and Node.js
  • •Technologies: Node.js, TypeScript, AWS, Auth0, GitHub
    • May 2019 – Oct 2020Berlin, Germany and Stockholm, Sweden
    Klarna Bank AB⁠, Software Engineer

  • •Built and scaled growth-focused marketing channels (push, in-app, blog) directly contributing to a user base of over 8 million monthly active users
  • •Worked closely with data teams to build ETL pipelines enabling campaign analytics and personalization.
  • •Architected custom technical setup behind multiple global and national marketing campaigns in cooperation with world-leading brands, such as H&M
  • •Trained marketeers and other non-technical colleagues on a regular basis with the goal of reducing barriers
  • •Represented the company at global events, including a leading marketing conference in New York City, and visited partners and Klarna's own global offices
  • •Worked closely with regional teams and helped at the forefront of expanding Klarna into the US and Australian markets
  • •Technologies: Node.js, TypeScript, AWS, Docker, React, React Native
    • Oct 2017 – May 2019Berlin, Germany

  • •Designed and developed a fraud-detection and management web app using Scala (Play), Java (Spring Boot) and Python
  • •Re-architected a legacy monolith into microservices on AWS to improve reliability and deployment velocity
  • •Implemented machine learning techniques in the area of fraud and phishing detection
  • •Technologies: Scala, JVM, Play Framework, Python, React, TypeScript, AWS DynamoDB
    • Education
    2016 – 2019Berlin, Germany
    HTW Berlin - University of Applied Sciences for Engineering and Economics, Computer Science
    Skills
    TypeScript, Scala, Java (JVM), Node.js, React, Next.js, React Native, Nest.js, Kafka, ETL / Data pipelines, PostgreSQL, Cassandra, MongoDB, REST, JSON, AWS (Lambda, ECS, EKS, CloudFormation, CloudFront, DynamoDB), Google Cloud Platform (GCP), Docker, Kubernetes, Terraform, GitLab CI/CD, GitHub Actions, Git, Jest, Kibana, Grafana, Auth0, Firebase, VS Code, IntelliJ, Marketing tech & growth engineering, Scrum, Agile, SAFe
    Languages
    German — Native|English — Highly proficient|Persian|French|Spanish — Elementary