Tomasz Dąbrowski, Developer in Warsaw, Poland
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Tomasz Dąbrowski

Verified Expert  in Engineering

Java Developer

Location
Warsaw, Poland
Toptal Member Since
October 30, 2015

Tomasz是一位富有创造力的开发人员，拥有超过15年的设计和实现Java应用程序的经验. He is a team player, 热衷于学习新技术，并尝试不同的想法和方法来改进过程. Tomasz曾在惠普(Hewlett-Packard)和硅谷初创公司等跨国公司工作. 目前，他帮助中小型公司创建基于java的解决方案.

JavaJUnitSpringSpring BootMySQLJDBCSQLApache TomcatHibernateUMLJenkinsTest-driven Development (TDD)Amazon S3 (AWS S3)ElasticsearchAmazon DynamoDB

Portfolio

A Non-profit Organization in Warsaw, Poland
Java, Scratch
Goalscape Software
后端开发，Spring, PostgreSQL, SQL, SaaS，后端架构...
DextCloud
亚马逊网络服务(AWS)、谷歌云平台(GCP)、Camel、Spring Boot

Experience

Java - 11 yearsSQL - 8 yearsAWS SDK - 6 yearsSpring - 6 yearsRESTful Microservices - 4 yearsSpring Boot - 3 yearsElasticsearch - 1 yearWebSockets - 1 year

Availability

Full-time

Preferred Environment

Eclipse, IntelliJ IDEA

The most amazing...

...我编写的是一种基于关键字的语言，用于在快速应用程序开发系统中对对象执行业务操作.

Work Experience

Volunteer Programming Teacher

2013 - PRESENT
A Non-profit Organization in Warsaw, Poland
  • 教那些想以程序员为职业的成年人.
  • 向孩子们介绍使用机器人的基本编程技能.
  • 组织了一场由孩子设计和执行的最佳游戏比赛.
Technologies: Java, Scratch

Senior Back-end Developer

2023 - 2023
Goalscape Software
  • 改进了后端GraphQL API的性能.
  • 设计并实现了一个附件处理模块.
  • Implemented back-end support for the Gantt charts.
Technologies: 后端开发，Spring, PostgreSQL, SQL, SaaS，后端架构, Spring Boot, TypeScript, Cloud Architecture, Hibernate, GraphQL, APIs, Gantt Charts

Developer and Architect

2018 - 2022
DextCloud
  • 创建了几个基于Spring boot的后端微服务，这些微服务实现了后端功能，并通过REST API与前端应用程序集成.
  • 实现了OAuth2授权服务器和WebSocket服务器，用于后端和前端应用之间的通信.
  • 设计并实现了应用程序的主要逻辑.
技术:亚马逊网络服务(AWS)、谷歌云平台(GCP)、Camel、Spring Boot

Amazon API Gateway Expert

2018 - 2018
UAfjord, Ltd. (via Toptal)
  • Integrated Shopify with Amazon SNS.
技术:AWS Simple Notification Service (SNS)， Amazon API Gateway

Java Back-end Developer

2016 - 2018
Online Consulting Portal
  • 为德国的商业顾问创建了一个求职门户网站.
技术:Angular, HTML, Play Framework, Java 8

Java Developer

2016 - 2018
Optile GmbH
  • 整合了在线支付系统与几个支付提供商和银行(如.g., Stripe, ConsultaPay, APCO, Payvision). 在线支付系统是用Core Java编写的.
Technologies: Java 8

Developer

2016 - 2017
Eprintwerx International
  • 为一个应用程序构建AWS Lambda (Java)和AWS API网关后端，该应用程序为营销目的提供数据. 该项目具有微面向服务的体系结构.
技术:Amazon API Gateway、AWS Lambda、Java 8

Java Back-end Developer

2016 - 2016
ChessVision
  • 为一个允许用户记录棋局的应用程序构建了一个基于spring的复杂客户机-服务器系统.
技术:RESTful微服务、Amazon EC2、Java 8

Java/Liferay Developer

2015 - 2016
PFacto
  • 为一家荷兰能源供应商公司创建了CRM应用程序. 该应用程序基于Java portlet，使用Liferay实现.
Technologies: Liferay, Java

Java AWS Developer

2015 - 2015
Graywill, LLC
  • 为一家小型旅行社创建了在线文档生成应用程序. The application was based on AWS Lambda functions.
Technologies: AWS Lambda, Java 8

Senior Java Developer

2011 - 2013
Altkom (Poland)
  • 使用Spring和Hibernate为不同的客户设计并实现了大约五个web应用程序.
  • 使用Swing和Drools创建了一个桌面应用程序.
  • 完成两次网上web应用程序(银行应用程序)的安全和性能审计.
  • Conducted technical interviews.
  • 为客户准备了5个左右的高层次技术方案.
技术:JBoss Drools, Liferay, Hibernate, Spring, Java

Senior Developer/Designer

2004 - 2011
Hewlett-Packard
  • 为不同客户设计和开发web和桌面应用程序(大型国际公司约15个项目).
  • 准备了大约15个高级和低级设计.
  • 为两个项目计划团队合作并审核结果.
  • Provided software measurement (e.g., function point analysis).
  • 帮助分析业务流程并收集大约十个项目的用户需求.
技术:UML, SQL, Enterprise Java Beans (EJB)， Oracle, Ajax, iBATIS, Hibernate, Spring, Java

Dextcloud Low-Code Platform

http://dextcloud.com/
一个允许在分布式环境中创建业务应用程序的平台，只需很少或没有代码. 项目开始时，我作为后端工程师加入了这个项目. 我的主要职责是设计和开发用于创建和测试业务应用程序的引擎.

Sneaker Con

http://sneakercon.com/
Sneaker Con是供应商和买家的平台，允许用户购买、销售和交易运动鞋. I was the back-end developer and worked on implementing new business features; I also integrated the application with other systems and scaled it to handle thousands of concurrent users.

目标设定平台-性能改进和后端新功能

http://goalscape.app
In this project, 我的主要职责是改进性能，并向基于java的目标设置平台引入新的后端特性. 后端是使用Spring和GraphQL等技术开发的, and it was integrated with a front-end application. 我的任务包括优化后端性能. Additionally, 我为这个平台添加了几个新特性, including public projects, Gantt charts, and support for attachments.
使用Spring Boot实现WebSocket与STOMP出版物的图像
Publication

使用Spring Boot实现WebSocket与STOMP

http://06z.yolon.net/java/stomp-spring-boot-websocket

Languages

Java, UML, SQL, Scratch, Java 8, Python, HTML, JavaScript, GraphQL, TypeScript

Frameworks

JUnit, Spring, Spring Boot, TestNG, Hibernate, Apache Camel, iBATIS, Angular, Camel, Selenium, Swagger, AngularJS, JSON Web Tokens (JWT), Apache CXF, Play Framework

Libraries/APIs

JAX-RS, JAXB, JDBC，公共HttpClient, JAX-WS, REST api

Paradigms

REST, Microservices, Continuous Integration (CI), Test-driven Development (TDD), Test Automation, Back-end Architecture, Management

Other

Freelancing, Apache Commons, WebSockets, Liferay, RESTful Microservices, API Integration, Ajax, Amazon API Gateway, Intercom, KSQL, Enterprise Java Beans (EJB), Cloud, Amazon RDS, Back-end Development, SaaS, Cloud Architecture, Programming, Engineering, Finance, APIs, Gantt Charts, Serverless

Tools

Apache Tomcat, Jenkins, JBoss Drools, AWS SDK, IntelliJ IDEA, AWS Simple Notification Service (SNS), Papertrail, BrowserStack, AWS Fargate, AWS IAM, Amazon Elastic Container Service (Amazon ECS)

Platforms

Amazon EC2, Eclipse, AWS Lambda, Google Cloud Platform (GCP), Amazon Web Services (AWS), Oracle, OpenShift, Amazon, Linux, Android

Storage

Elasticsearch, Amazon DynamoDB, Amazon S3 (AWS S3)， MySQL, Redshift, MongoDB, PostgreSQL，数据库

2003 - 2007

Master's Degree in Organization Managment

Gdansk University of Technology - Gdansk, Poland

1999 - 2004

Master's Degree in Computer Science

Gdansk University of Technology - Gdansk, Poland

NOVEMBER 2023 - PRESENT

AWS Knowledge: Serverless

Amazon Web Services Training and Certification

DECEMBER 2022 - DECEMBER 2025

AWS Certified Solutions Architect – Associate

Amazon Web Services

SEPTEMBER 2022 - SEPTEMBER 2025

AWS Certified Developer – Associate

AWS

APRIL 2009 - PRESENT

Sun Certified Enterprise Architect

Sun Microsystems