Tomasz W.

Tomasz W.

Senior Full-Stack Developer

Poland
Trusted member since 2026
19 years of experience

His primary backend framework is Django, and he has extensive experience building web platforms, APIs, and cloud-native applications.

He has delivered products end to end, from initial concept and architecture through backend and frontend development, infrastructure, CI/CD, and Kubernetes deployments. His experience spans SaaS, fintech, analytics, and e-learning, with a focus on designing scalable services and translating business requirements into practical technical solutions.

Tomasz combines strong technical expertise with a pragmatic product mindset. He works effectively with both technical and business stakeholders and focuses on building reliable, maintainable systems that support long-term product growth.

Main expertise

PythonPython16 years
DjangoDjango13 years
LinuxLinux19 years
JavaScriptJavaScript15 years
17+

Experience15

Senior Full-Stack Developer, Senior Product Developer, DevOps

lawpilots
Online Learning and EdTech
Aug 2023 - Jan 2026 · 2y 5m

lawpilots provides compliance and legal e-learning solutions for organizations through a SaaS platform.

  • Built and developed a large, modular Django monolith for content delivery and e-learning operations.
  • Implemented backend services, APIs, and full-stack web application features.
  • Served as the primary DevOps engineer for the project.
  • Managed AWS cloud infrastructure as the sole infrastructure owner for the application.
  • Established CI/CD pipelines, deployment automation, and Kubernetes-based delivery workflows.
JavaScriptJavaScript
DockerDocker
PostgreSQLPostgreSQL
AWSAWS
RedisRedis
9+
Plentific

Senior Backend Developer

Plentific
Real Estate Tech
Jan 2023 - Jul 2023 · 6m

Plentific develops a property management platform connecting landlords, contractors and service providers.

  • Developed backend services using Python.
  • Extended platform functionality and REST APIs.
  • Improved backend reliability and maintainability.
  • Collaborated with distributed engineering teams on production systems.
PostgreSQLPostgreSQL
ElasticSearchElasticSearch
DjangoDjango
JenkinsJenkins
PythonPython
2+

Senior Backend Developer

Zageno
Healthcare IT
Oct 2020 - Oct 2022 · 2y

ZAGENO operates a digital marketplace for life science and laboratory procurement, connecting research organizations with laboratory suppliers.

  • Maintained and extended a large Django-based backend application supporting the core marketplace.
  • Developed backend services and REST APIs using Python and Django.
  • Contributed to the migration from a monolithic application to a microservices architecture.
  • Supported the DevOps team with service integration, delivery, and production maintenance.
JavaScriptJavaScript
PostgreSQLPostgreSQL
ElasticSearchElasticSearch
RedisRedis
DjangoDjango
8+

Head Of Web Development, Full-stack Developer

Shareablee
Digital Marketing
Oct 2018 - Oct 2019 · 1y

Shareablee provides analytics and measurement solutions for digital and social media performance.

  • Led the web team in planning and implementing backend and frontend product features.
  • Guided the team on implementation approaches for requested product functionality.
  • Developed backend features in Django applications.
  • Built frontend functionality in React applications.
React.jsReact.js
PostgreSQLPostgreSQL
AWSAWS
RedisRedis
ES5/ES6ES5/ES6
7+

Backend Developer

Vic | Short-term Contract
Financial Technology (FinTech)
Apr 2018 - Sep 2018 · 5m

Vic develops software products for digital business services.

  • Developed backend services using Django

  • Implemented application features and APIs

  • Maintained production systems

  • Collaborated on backend improvements

PostgreSQLPostgreSQL
DjangoDjango
FlaskFlask
PythonPython
TerraformTerraform
4+

Frontend Developer

Friendsurance | Short-term Contract
Insurance
Jan 2018 - Mar 2018 · 2m

Friendsurance develops digital insurance products and customer platforms.

  • Built frontend functionality using JavaScript

  • Implemented user interface improvements

  • Collaborated with backend engineers

  • Maintained production frontend applications

JavaScriptJavaScript
React.jsReact.js
TypeScriptTypeScript
ES5/ES6ES5/ES6
Redux.jsRedux.js
HTML / CSSHTML / CSS

Frontend Developer, DevOps

Scrive
Legal Tech
Jun 2016 - Dec 2017 · 1y 6m

Scrive provides electronic signature and digital agreement solutions.

  • Developed frontend applications using JavaScript

  • Maintained web application features

  • Supported deployment and operational tasks

  • Collaborated with cross-functional product teams

JavaScriptJavaScript
React.jsReact.js
AWSAWS
TypeScriptTypeScript
Node.jsNode.js
4+

Web (backend & frontend) developer, DevOps

Opera Software
Information Technology (IT) and Services
Apr 2014 - May 2016 · 2y 1m

Opera Software develops web browsers and internet products for global users.

  • Developed backend and frontend services for web products

  • Built and maintained Python applications

  • Supported deployment and infrastructure automation

  • Collaborated on large-scale web platforms

MySQLMySQL
JavaScriptJavaScript
DockerDocker
PostgreSQLPostgreSQL
DjangoDjango
7+

Mobile & Backend developer

Nomtek | Short-term Contract
Information Technology (IT) and Services
Dec 2013 - Mar 2014 · 3m

nomtek develops mobile and digital products for international clients.

  • Developed backend functionality

  • Contributed to mobile application development

  • Fixed and maintained Django-based systems

  • Collaborated with cross-functional engineering teams

JavaScriptJavaScript
MongoDBMongoDB
PostgreSQLPostgreSQL
Node.jsNode.js
FlaskFlask
4+

Web (backend & frontend) developer

Cooklet | Short-term Contract
Fitness and Wellness
Sep 2013 - Nov 2013 · 2m

Cooklet developed a digital platform focused on cooking and recipes.

  • Built backend functionality

  • Developed frontend features

  • Maintained production web applications

  • Implemented new platform functionality

JavaScriptJavaScript
PostgreSQLPostgreSQL
NGINXNGINX
FlaskFlask
PythonPython
3+

Software Manager, Backend developer

ClearCode
Marketing and Advertising
May 2012 - Aug 2013 · 1y 3m

Clearcode provides software development services focused on advertising technology.

  • Led backend development within the Python team while working closely with the Project Manager

  • Managed technology choices and the development process for backend delivery

  • Developed large-scale Python backend applications using Flask and Tornado

  • Built Django-based websites and portals with remote service integrations

  • Collaborated with the DevOps team to maintain application stability and delivery readiness

  • Implemented minor frontend updates using JavaScript and Backbone.js when needed

MySQLMySQL
JavaScriptJavaScript
MongoDBMongoDB
PostgreSQLPostgreSQL
AWSAWS
9+

Web & Mobile developer

Weeby sp. z o.o.
Information Technology (IT) and Services
Jan 2011 - Apr 2012 · 1y 3m

Weeby was a Web development agency for clients in Poland

  • Built PHP (Zend Framework) websites and portals with remote service integrations

  • Built Web applications and portals in Python, using Flask and Tornado frameworks

  • Worked on two iPhone applications

PHPPHP
MySQLMySQL
JavaScriptJavaScript
MongoDBMongoDB
RedisRedis
7+

Backend developer & webmaster

Solpeo sp. z o.o.
Information Technology (IT) and Services
Feb 2010 - Dec 2010 · 10m

Solpeo was a Polish startup developing a Web strategy game

  • Worked on backend services in Python, using the Tornado framework

  • Built the game's Web portal, including tight integration with the backend services

JavaScriptJavaScript
PostgreSQLPostgreSQL
PythonPython
HTML / CSSHTML / CSS

Web developer & junior sysadmin

P.W. GRE
Information Technology (IT) and Services
Apr 2007 - Jan 2010 · 2y 9m

P.W. GRE was a local ISP and small Web development agency based in Poland

  • Built and maintained PHP Web applications and portals for the company clients

  • Worked on open-source projects used by the company (VHCS 2, ispCP Omega, Roundcube Webmail)

  • Performed administrative tasks on Web hosting servers

  • Supported maintenance and adminsitration of Linux routers/firewalls

PHPPHP
MySQLMySQL
CakePHPCakePHP
JavaScriptJavaScript
WordPressWordPress
3+

Web developer

PGK Electronics
Information Technology (IT) and Services
Jun 2006 - Jan 2007 · 7m

PGK Electronics was a manufacturer and distributor of networking hardware for local ISPs

  • Built and maintained the company Web site

  • Built and operated the company Web shop

PHPPHP
MySQLMySQL
JavaScriptJavaScript
HTML / CSSHTML / CSS

Engineering excellence

All Senior Full-Stack Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Senior Full-Stack Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Tomasz stands.

050100150200250300Engineering excellence scoreShare of engineersmedianmeanProxifyacceptancethreshold
Tomasz
Score 187 · Top 11% of engineers

Portfolio

Highlighted by Tomasz

HotPocket 4
HotPocket

HotPocket is a minimal, open-source bookmarking app. Save links from all the major browsers, across mobile and desktop devices. Built to be self-hosted, HotPocket puts the user in control of their data.

Other projects 1

Keep It Secret

Education

Techniczne Zakłady Naukowe
Techniczne Zakłady Naukowe
Electronics Technician1999 - 2005

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