Freelancers for hire in Poland
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Sponsored Freelancers
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Professional Java development for 10+ years. Expert level in Core Java, deep understanding of both «Java Concurrency in Practice» and Java Memory Model. Solid knowledge of algorithms and data structures with their complexity. Large experience of memory and performance profiling. Basics of Scala. Knowledge and...Professional Java development for 10+ years. Expert level in Core Java, deep understanding of both «Java Concurrency in Practice» and Java Memory Model. Solid knowledge of algorithms and data structures with their complexity. Large experience of memory and performance profiling. Basics of Scala. Knowledge and experience with BigData ecosystem (Spark, Hadoop). Multidimensional OLAP, ActivePivot. Ability to write nice, clean, extensible, robust code. UML, solid understanding and ability to apply OOP design patterns. Sense of quality, large experience in testing (unit, integration tests, code coverage and performance profiling). Experience with containers (Docker, K8s). Good knowledge of Linux, fluent Bash scripting. Cloud technologies (AWS, Azure). Experience of successful technical leadership in small teams. Practical knowledge of agile processes. Open and clear communication. Ability to observe and decompose tasks, formulate the completion criteria, estimate real duration, track the progress. Ability to write nice and clear documentation, to present the results. Vision of customer's demand, good usability expertise. less
Hire Ivan0512
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I am a best Full Stack Developer, Database Administrator with 9+ years of experience in enterprise and high-performance responsive web technologies for both front-end and back-end. Also, I am a self taught Full-Stack Developer, passionate about learning new technologies. I have a working proficiency in JavaScript,...I am a best Full Stack Developer, Database Administrator with 9+ years of experience in enterprise and high-performance responsive web technologies for both front-end and back-end. Also, I am a self taught Full-Stack Developer, passionate about learning new technologies. I have a working proficiency in JavaScript, React, Redux, HTML, CSS, Node, Express, SQL, MongoDB and Sass and skilled at making single page applications and progressive web apps with the extended ecosystems that allow your software to operate on multiple devices. I utilize React, VueJS, Angular, HTML5, JavaScript, and other flexible and powerful techniques to create reliable, fast and engaging web apps.I am also skilled at making cost effective cross-platform mobile app development using React Native. I am looking to further expand my skill set by gaining more in depth back-end knowledge. I adapt easily to new challenges. less
Hire Jaros0808
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Office equipment service engineer with 15 years of experience. Programming enthusiast. Currently, I am focused on Java and Spring. In my free time, I am training in JS and Angular.Office equipment service engineer with 15 years of experience. Programming enthusiast. Currently, I am focused on Java and Spring. In my free time, I am training in JS and Angular. less
Hire karoltylenda
