Mikołaj Wilczek

Senior mobile developer

Tellent (formerly Recruitee) | May 2020 - Present

Companion App for Applicant Tracking System

A mobile app focused on quick, frequent operations on the go. Team: Sub-team of 5 within a development team of 40+

Responsibilities:Maintain, deploy, and develop the mobile and PWA; monitor performance and errors; research user needs; organize work tasks; maintain app infrastructure

Achievements:Increased product awareness and independence; tripled user base; improved startup performance by 50%; developed custom native plugins; reduced technical debt

Tech stack:Angular, Ionic, Capacitor, Android (Kotlin), iOS (Swift), Elixir

React Native and React developer

Monterail (Software house) | Oct 2018 - Apr 2020

Luxury Fashion Browsing App

Fashion browser tailored for luxury fashion retail companies. Team: 4 member team

Responsibilities:Develop and deploy the application; create prototypes and proof of concepts (PoC); consult on technical limitations

Achievements:Successfully utilized the latest technology stacks; delivered exceptionally fast prototyping

Tech stack:Redux, Expo, React Native, React, Airtable, Firebase technologies, Android (Java), iOS (Objective-C)

Fintech + HR Application

Hybrid application for customer experimental wage-related processes

Responsibilities:Implement and deploy on iOS and Android platforms; make minor improvements to the website; assist with task management

Achievements:Successfully navigated tight project deadlines; improved effective communication with the customer; balanced team capabilities with project requirements

Tech stack:Expo, Ruby on Rails, Postgres, Android (Java), iOS (Objective-C)

Multiplatform Business Communication App

Facilitate business communication across various platforms (smartphones, PCs). Team: 6 Team members, Agile - Scrum

Responsibilities:Implement frontend app for all platforms; deploy frontend apps

Achievements:Worked with early version of libraries; overcame tools limitations; creating components with minimal platform differences

Tech stack:React Native for Web, NodeJS, Postgres, GraphQL, Android (Java), iOS (Objective-C)

Parking App for Shopping Malls

App providing a seamless, ticketless parking experience for shopping mall visitors. Team: 4 members, Kanban

Responsibilities:Develop web and mobile app; reconstruct documentation; consult with stakeholders on the project direction; collaborate with cross-continental teams

Achievements:Provided a seamless, ticketless parking experience; development within a very limited budget

Tech stack: Redux, React Native, React, NodeJS, MongoDB, GitHub, Git, Android (Java), iOS (Objective-C)

Mobile Game - Charity Encouragement

A simple game with the goal of promoting charitable contributions. Team: 3 members, waterfall

Responsibilities:Provide consultation and mentoring, address framework constraints and mobile store requirements

Achievements:Delivered a reasonable performance; pushed react-native to its limits

Tech stack:React Native, Android (Java), iOS (Objective-C)

IoT and Android developer (R&D Specialist on Grant Project)

Wrocław University of Science and Technology | May 2017 - Nov 2018

Heat Detection in Cows

Project aimed at improving cow health and milk production by gathering and analyzing data from cow collars. Team: 6 members (including 4 lecturers)

Responsibilities:Conduct hardware testing and Android app development; deploy and program cow collars; create auxiliary software for data gathering; mediate between requirements, software capabilities, and hardware constraints; research and document findings

Achievements:Successfully addressed connectivity issues within metal barns; implemented complex algorithms for electronic devices; created comprehensive research documentationl; developed effective Android applications for data collection;

Tech stack:Android (Java), Bluetooth 4.2/5, R, Python, C++, BLE scanning libraries, nRF51/52 dev kit, Redmine

iOS developer

Human Device (Small software house) | Jun 16 - Sep 17

Truck Fleet Management App

System for the efficient management of truck fleets and cargo. Team: 11 members, Kanban

Responsibilities:Research periperal devices; process requirements; address user app issues; maintain CI/CD for mobile apps; delegate task

Achievements:Communication with barcode scanners and printers; enhanced app accessibility

Tech stack:Android (Java), iOS (Swift), Google Maps API, GCM, Alamofire, Retrofit, GitLab, Postman

Food Delivery Mobile App

Developed an app for connecting couriers, restaurants, and users for food delivery. Team: 18 members

Responsibilities:Engage with stakeholders to address technological and cultural constraints; organize work tasks and synchronize Android and iOS features; onboard and mentor new developers;

Achievements:Sucesfully coordinated the team; delivered the app on time

Tech stack:Android (Java/Kotlin), iOS (Swift), Google Maps API, GCM

Android developer

Human Device | Aug 14 - Jun 16

Apps for renewable energy management

A suite of apps for managing renewable energy devices. Team: to 6 memebers

Responsibilities:Communicate with client's backend team; develop and deploy android applications; clarify requirements with the client; maintain inter-app communication

Achievements:Successfully delivered an app compatible with the client's ecosystem

Tech stack:Android (Java), PHP, Git

App for browsing available items in shops

An app to cache and search for available items in shops, eliminating the need for an internet connection. Team: 6 members

Responsibilities:Develop frontend and backend applications

Achievements:Created a custom ORM to improve development iterations through a complex caching system

Tech stack:Android (Java), Subversion, Java EE, Spring

Master's degree (2018)

Wrocław University of Science and Technology, faculty of Computer Science and Management - information system design

Bachelor's degree (2017)

Wrocław University of Science and Technology, faculty of Electronics - software engineering