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Location

Poland

Rate

$15  / per hour

Years of experience

14+

About

Experienced in working with design patterns and implementing source code according to requirements, with a primary focus on GIS, .NET (C#), JS, and related technologies. Proficient in creating technical documentation and conducting code reviews to enhance code quality. Skilled in developing both back-end and front-end layers of web applications, and adept at working with REST and SOAP protocols. Experienced in building web applications using frameworks like React and AngularJS, as well as working with GIS/spatial data. Experienced in writing unit tests and implementing test-driven development. Familiar with version control systems like GIT and collaboration tools like Jira. Passionate about creating innovative solutions that meet the needs of users and businesses alike.

Tech Stack

GIS, .NET, API, C#, CSS, Git, HTML, JavaScript, Jira, MongoDB, Node, Oracle, React, Redux, SQL

Experience

  • Spearheaded the development of proprietary products leveraging Google/Leaflet maps, utilizing a modern tech stack including React (redux, hooks), .NET Core, Firebase, Node.js, MongoDB, Docker, SQL Server, Material UI, and Bootstrap.
  • Drove the development of core application features, conceptualizing and implementing intricate feature sets.
  • Crafted meticulous technical documentation to guide project stakeholders and facilitated seamless collaboration through version control with GIT.
  • Engineered web layers encompassing back-end, front-end, and data components, leveraging REST and SOAP protocols for seamless integration.
  • Produced comprehensive technical documentation and collaborated closely with IT analysts to refine project documentation.

Employment history

Senior Full Stack Developer, Alm Services 2019 - since

-Designed and implemented solutions using .NET (C#), JavaScript, and related technologies.
-Created comprehensive technical documentation to support development and maintenance processes.
-Conducted code reviews to ensure quality and improve existing codebases.
-Developed web layers (backend, frontend, and data) using various technologies, including JS, C#, and PL-SQL.
-Utilized REST and SOAP protocols for web services development and integration.
-Developed GIS and spatial solutions using Oracle and Python (qGis, PyQGis).
-Worked with Oracle APEX for application development.
-Managed version control and project tracking using Git, GitLab, and Jira.

Technologies:
-DOTNET CORE 3, .NET FRAMEWORK (MVC, WebApi2), jQuery, Oracle, GIS (spatial), nHibernate, IoC, Automapper, Javascript, React, CSS, HTML, Design Patterns, Moq, CastleWindsor, Dapper, ErgoMap, Google API, Google Maps, and many others.

Senior Full Stack Developer, iDataSystems Erwin Czerniawski 2017 - since

-Created custom products utilizing Google/Leaflet maps with a tech stack including React (Redux, hooks), .NET Core, Firebase, Node.js, MongoDB, Docker, SQL Server, Material UI, and Bootstrap.
-Built desktop applications for the transport sector, focusing on .NET and SQL Server.
-Developed tools and applications based on frontend technologies like React, AngularJS, Google/Leaflet maps, and Node.js.
-Implemented CI/CD processes using GitLab.

Senior Full Stack Developer, GeoSolution/Alm Services 2017 - 2019

Working with design patterns, implementation source code according to requirements mainly using .NET (C#), JS and related.
-Developed solutions using design patterns, .NET (C#), and JavaScript according to client requirements.
-Created and maintained technical documentation.
-Collaborated with IT analysts to create detailed documentation.
-Developed web services using REST and SOAP protocols.
-Implemented frontend layers using DevExtreme controls (JavaScript and Razor syntax).
-Coordinated CI/CD processes and performed code reviews.
-Managed version control and project tracking with Git, GitLab, and Jira.
Technologies:
-.NET (MVC, WebApi2), jQuery, Oracle, GIS (spatial), nHibernate, IoC, Automapper, Javascript, DevExtreme, DevExpress JS, CSS, HTML, Razor, WebServices, Design Patterns, Moq, CastleWindsor, Hexagon Gis maps and many others.

Senior Full Stack Developer/Architect, Exito 2015 - 2017

Working with design patterns, implementation source code according to requirements.
-Led the architectural design and development of web applications.
-Created and maintained comprehensive technical documentation.
-Developed frontend applications using AngularJS, DevExtreme, HTML, JavaScript, and Bootstrap.
-Implemented backend solutions using .NET, SQL Server, and nHibernate.
-Conducted unit testing using the NUnit framework.
-Managed version control and project tracking with Git.
Technologies:
-NET (MVC, WebApi2), jQuery, AngularJS, SqlServer, nHibernate, DevExtreme JS, DevExpress, CSS, HTML, Razor, WebServices, Moq, CastleWindsor.

Web Developer, Euvic 2017 - 2018

-Developed web solutions using .NET (MVC, WebApi2), JavaScript, AngularJS, Oracle, and nHibernate.
-Created and maintained technical documentation.
-Worked within SCRUM methodology for project management.
-Managed version control and project tracking with Git and GitLab.

Technologies:
-.NET (MVC, WebApi2), jQuery, AngularJS, Oracle, nHibernate, DevExtreme, CSS, HTML, Razor, Soap, SoupUI, WebServices, WCF, NUnit framework, Moq,
CastleWindsor.

Full stack Web Developer, IdeasOn 2016 - 2017

-Developed core application features and created feature concepts.
-Created and maintained technical documentation.
-Worked within SCRUM methodology for project management.
-Implemented test scenarios and responsible for model, business logic, and frontend layers.
-Managed version control with Git.
-Responsible for model, business login and front-end layers.

Technologies:
-.NET (MVC, WebApi2), jQuery, AngularJS, SqlServer, nHibernate, boostrap, WrapBootstrap, CSS, HTML, Razor, WebServices, NUnit framework, Moq, GIT,
Azure.

Web Developer, Invent On 2015 - 2016

-Developed insurance and financial applications based on .NET platform.
Planned, modeled, and implemented backend and frontend layers of web applications.
-Created and maintained technical documentation.
-Worked within SCRUM methodology for project management.
-Managed version control and project tracking with TFS.
Using technologies: .NET ASP Web Api2, MVC, Sql Server, AngularJS, JavaScript, nHibernate, Entity Framework, T-SQL, (view – bootstrap).

Web Developer, Euvic 2015 - 2016

Worked on .NET web solutions based on ASP MVC WebApi, JavaScript, jQuery, Kendo controls, WCF, Automapper, Ninject, IoC, XML, XSLT, WebServices.
-Worked on unit test implementation.
-Systems integration using Oracle Service Bus. Building and improving OSB solutions for many external systems.
-Worked on Oracle PL-SQL (Oracle SQL Developer).
-Worked with version control system and bug tracking system (SVN, GIT, Mantis, Jira).
-Using Case tools: Testlink, Oracle SQL Console, Oracle SB Console.
-Worked with documentation.

Web Developer, Euvic (short project for external client – desktop dedicated application) 2015 - 2016

-Created a .NET Desktop application using TCP, Telnet protocole for cooperating with external barcode scanners.
-Developed Document Processing Framework and web applications for external clients.
-Worked with SQL Server T-SQL for data integration with Kofax.
-Managed GIT repositories and provided training in Bern.
-Developed applications using DotNetNuke for clients.
-Using technologies: .NET, WebForms, EntityFramework, Sql Server, network libs, SICK libs, XML, XSLT, AutoMapper etc.

Web Developer, LGBS 2015 - 2015

-Worked on .NET web solutions based on ASP MVC WebApi, JavaScript, jQuery, Kendo controls, WCF, Automapper, Ninject, IoC, XML, XSLT, WebServices.
-Worked on unit test implementation.
-Systems integration using Oracle Service Bus. Building and improving OSB solutions for many external systems.
-Worked on Oracle PL-SQL (Oracle SQL Developer).
-Worked with version control system and bug tracking system (SVN, GIT, Mantis, Jira).
-Using Case tools: Testlink, Oracle SQL Console, Oracle SB Console.
-Worked with documentation.

Web Developer, Swiss Post Solutions 2012 - 2015

-Document Processing Framework development.
-Worked on SQL Server TSQL (integration data wtih Kofax).
-Worked with GIT repository (managing) (Training in Bern).
-Web application for external clients based on .Net and SQL Server.
-1,5 year with DotNetNuke. Development application based on DNN for client.

Test engineering and development, Intel Corporation 2010-2012

-Conducted comprehensive software validation and testing to ensure quality and performance.
-Automated test cases to improve testing efficiency and coverage.
-Collaborated with cross-functional teams to identify and resolve software defects.
-Documented test results and provided detailed reports to stakeholders.
-Participated in code reviews and contributed to the continuous improvement of testing methodologies.

Education history

Warsaw University of Technology 2007 - 2011 Specialization: Computer Science (3,5y - Engineer).
Tom Potanski

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Tom Potanski Founding Partner, DevsData

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"The agency led the hiring with a dedicated recruitment team. In the end, the client hired two senior technicians, one from Spain and another from Portugal, greatly enriching its engineering team."
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Sebastian Abdy Saboune
Cofounder & CPO
Twist Solutions, Ltd.
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"We consider the developers they recommended exceptionally strong from a technical perspective. I can recommend the services of DevsData to all tech companies in need of exceptional tech talent."
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Garik Suess
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Qualifyze GmbH
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"It was a pleasure to work with DevsData. They excelled at commitment, communication skills, and time and team management. They were extremely organized and efficient, and they tackled every part of the project (several projects) with the utmost care."
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Steven Haley
Managing Director
Kroll, Inc.
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5.0
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"DevsData reached out to us, as we've been looking to grow our engineering team in Europe and Poland. Communicating efficiently and professionally, DevsData made a strong impression with their understanding of the recruitment challenges we were facing."
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Karim Butt
Cofounder & CTO
GlossGenius, Inc.
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5.0
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"I really appreciate their ability to adapt to our preferred ways of working, agility and successful delivery."
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Tom McGovern
Managing Director
Idealab, Inc.
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"They have really proved their worth and have shown me that my company’s money is really well spent."
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Matthew Wiklo
CEO
Epinote
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"I've been working on several IT projects with DevsData for more than five years. There were many software projects they completed for us."
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Christopher Ting
Senior IT Manager
Verus Analytics LLC
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5.0
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"From beginning to end, the cooperation was smooth and contact with DevsData representatives was very easy."
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Patrick Lobocki
CEO
Roesier, Inc.
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"From beginning to end, my experience with DevsData was only positive."
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Daniel Goebel
CEO
CoCoHub, Ltd.
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"Quality control is rare in this line of business, I think this is the secret sauce of their exceptional quality."
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Paul Polewicz
CEO
Reef Technologies
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5.0
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"This rapid pace and immaculate organization are what stood out to me most about DevsData."
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Joanna Szymanski
Owner & CEO
Xino Sports LLC
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"We at Flowr Agency are particularly pleased with the outcomes, notably the superior code quality, speed, and communication. It confidently endorses the agency's services to other marketing firms."
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Loic Moncany
Cofounder
Flowr Agency
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"We felt good about our collaboration. They were good people to work with, full of energy, creative, and proactive."
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Christian Cieslak
CEO
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"We also recommended DevsData to my business connections as they did a truly fantastic job."
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Matthew Lenicki
CEO
WebCrafters, Inc.
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"For DevsData to find four amazing developers so fast - that cannot be just luck."
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Adam Zaczek
Founder
1Security
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"Our cooperation has been very efficient, and I love it."
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Adam Janczewski
Founder & CEO
Jutro Medical
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"Tom and his team showed great dedication to us as client and allowed wellbee to launch an Alpha stage of our online therapy product in under 1 month from absolute scratch. I need to congratulate them on the very good UX and UI design and good communication skills of the whole team."
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Paul Chrzan
Cofounder and CEO
Wellbee
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"Out of all the vendors we work with, DevsData clearly stands out. The quality of developers they deliver is beyond what we've received from any other vendor, and they've been able to send profile recommendations very quickly. I'm happy to be their reference for other companies from Israel and talk about their recruitment abilities and what they delivered for us - we eventually signed over 19 engineers from DevsData. I'm extremely satisfied with this recruitment process."
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Ran Eyal
Program Manager
ZIM
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“I interviewed about a dozen different firms. DevsData LLC is truly exceptional – their backend developers are some of the best I’ve ever worked with. I’ve worked with a lot of very well-qualified developers, locally in San Francisco, and remotely, so that is not a compliment I offer lightly. I appreciate their depth of knowledge and their ability to get things done quickly.”

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CEO of Orange Charger LLC,

Ex-Tesla Engineer,

Mentor at YCombinator

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Tailored recruitment process, trusted market expertise.

“DevsData reached out to us, as we’ve been looking to grow our engineering team in Europe and Poland. Communicating efficiently and professionally, DevsData made a strong impression with their understanding of the recruitment challenges we were facing. They designed a tailored recruitment process for our needs. I was impressed with the technical depth of their approach.”

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Karim Butt

Co-Founder & CTO at GlossGenius, Inc.

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Outstanding vendor, 21 engineers hired.

“Out of all the vendors we work with, DevsData clearly stands out. The quality of developers they deliver is beyond what we've received from any other vendor, and they've been able to send profile recommendations very quickly. I'm happy to be their reference for other companies from Israel and talk about their recruitment abilities and what they delivered for us.”

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Senior Manager at

ZIM Integrated

Shipping Services Ltd.

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Proactive partner, exceptional results.

“DevsData demonstrated a strong degree of proactivity, taking time to thoroughly understand the problem and business perspective, and continuously suggesting performance and usability enhancements. Their app exceeded my expectations. I've worked with DevsData on numerous projects over the last 3 years and I'm very happy. Being both responsive and honest in communication.”

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Partner & Executive VP of Verus,

Financial LLC, Investor,

& Serial Entrepreneur

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