Oct 2020 – Jul 2024 · 3 yrs 9 mos · Remote

• Developed ReactJS front-end features and NodeJS back-end services for multiple customer-facing business banking products, integrating third-party finance services such as Interac and Fiserv, which expanded the product suite and improved client onboarding
• Implemented dozens of internal RESTful APIs, added audit and security checks, and set up CI/CD pipelines in GitLab using Docker and Kubernetes on Google Cloud, reducing deployment time and increasing code reliability
• Collaborated with product owners to design API and Redux data models and to code complex banking functions (limits, account hierarchy, approvals, roles, permissions) for the ATB Business Banking application, resulting in clearer data flow and faster feature delivery
• Upgraded the JavaScript stack and patched vulnerable npm/yarn dependencies, improving application security and maintaining compliance with internal security standards
• Developed three key products: (1) a custom Identity and Access Management service with SSO APIs, (2) an internal UI control-panel console and supporting APIs for ATB staff, and (3) a customer-facing business banking application that leveraged the new console features, delivering unified access and new functionality for clients

Dec 2019 – Aug 2020 · 8 mos · Alberta, Canada

• Developed internal, customer-facing web, Android, and iOS applications for enterprise live-event scheduling and merchandising using ReactJS, Ruby APIs, resulting in improved scheduling efficiency for clients
• Engineered full-stack features with ReactJS front-end and Ruby REST/GraphQL APIs backed by PostgreSQL and CouchDB, deploying to AWS via CircleCI and Jenkins, which streamlined release cycles
• Resolved offline data storage and processing challenges by implementing local CouchDB caches and background sync logic, ensuring data consistency when network connectivity returned
• Built resilient point-of-sale functionality that operated reliably under intermittent internet connections
• Improved logistics management code for distributed merchandise and warehouses, which reduced processing errors
• Developed complex multi-party settlement processes handling discrepancies and inventory; streamlined workflow and improved settlement accuracy

Jun 2019 – Nov 2019 · 5 mos · Calgary, Canada Area

• KnowHow is a SaaS platform that enables managers and their teams to easily create, share, access, update and monitor all key internal processes, best practices and procedures from their desktop or mobile devices.
• Helped build and maintain responsive web and mobile products, ensuring cross-device compatibility and reducing UI bugs
• Built and maintained AWS architecture on ECS, EC2, S3, Lambda, and ELB, improving system scalability and reliability
• Managed and developed the stack using Python/Django/Docker and JavaScript/React, delivering new features & improving old ones
• Automated processes and set up continuous integration, delivery, and deployment pipelines, cutting release cycle time
• Collaborated with local and remote developers to launch and sustain KnowHow features, enhancing team productivity

May 2019 – Nov 2019 · 6 mos · Calgary, Canada Area

• Bootkik is a place for creating and sharing step-by-step action plans called Recipes. Speakers, authors, podcasters and teachers of all types use Bootkik to provide their audience with clear guidance on how to take action. Bootkik is a consumer platform available on desktop and mobile.
• Helped build and maintain responsive web and mobile products with React and Webpack, which increased user engagement
• Migrated and maintained AWS architecture and set up Jenkins CI/CD pipelines, which reduced deployment time
• Managed and built applications with Python/Django and JavaScript/React, integrating Git for version control, which streamlined the development workflow
• Collaborated with five local and remote developers to launch new features and keep the codebase stable, which accelerated release cycles

Oct 2017 – Mar 2022 · 4 yrs 5 mos

• Improved security and anonymity of the coin, reducing vulnerability exposure and enhancing user privacy
• Re-compiled cryptographic, database, and utility libraries and rebuilt development environments after the project was abandoned, restoring build capability for the team
• Led the deployment of wallets for Windows, Linux, macOS, and Raspberry Pi, delivering cross-platform support for all users
• Upgraded and refined the daemon, Qt client, and Enigma engine, improving performance and stability
• Deployed the latest codebase to GitHub as an open-source repository, increasing community visibility and contributions
• Managed repository branches and upcoming changes, streamlining version control and release planning
• Worked on improving and maintaining the Electron version of the wallet, which reduced crash incidents and provided a smoother user experience
• Started the code rebase to a newer Bitcoin Core version, aligning the project with current protocol updates

May 2015 – Feb 2019 · 3 yrs 9 mos · Vancouver, British Columbia, Canada

• Developed web and mobile applications for workforce management and scheduling, using React and AWS services, enabling medium-to-large businesses to streamline staff planning
• Designed customizable interfaces for scheduling, time-and-attendance, and event staff management with React and Kendo UI, improving user navigation and flexibility
• Researched, evaluated and tested new frameworks against business requirements, to select optimal technologies for future projects
• Utilized a stack that included HTML5, CSS3, JavaScript, React, Bootstrap, Kendo UI, jQuery Mobile, AJAX, Git, Gulp, npm, Cordova, AWS (ECS, EC2), and TeamCity to deliver cross-platform applications that met client quality standards and reduced release cycle time
• Coordinated project requirements and resources with external contractors and team members via Slack, keeping timelines on track and aligning deliverables
• Developed a custom component framework using JavaScript and CSS3, stored in Bitbucket, to standardize UI development and speed up new feature creation
• Built a real-time, multi-user module that integrates third-party REST APIs with our services, creates custom UI elements, handles events, and sends push notifications, improving user collaboration and system responsiveness
• Mentored junior developers and co-op students through code reviews and pair programming, guiding them in using React & asynchronous JavaScript, which raised team productivity and code quality

Jul 2012 – Apr 2013 · 9 mos · Calgary, Canada Area

• Lead Project Analyst on integrating Unform8 document management system with Infor SX.enterprise ERP handling invoices, statements, purchase orders, pick tickets and other forms (creation, editing, converting, emailing, etc.). Customization of form data, design and layout depending on company, branch location (US/ Canada) and regional managers’ requirements.
• Coordinated JAD-style design sessions with senior business analysts and other knowledge workers, participated in testing, and documented critical edge cases, resulting in clearer requirements and reduced rework
• Cooperated with external contractors to deliver services aligned with upper-management goals and the global strategy, while respecting the decentralized structure, which accelerated project milestones
• Contacted stakeholders across organizational units to gather needs and define future processes, enabling a prioritized roadmap for system enhancements
• Suggested changes and enforced best practices to build a secure IT system; administered business-critical services and managed creation, migration, and maintenance of user accounts in Active Directory and Unix/AIX, supporting a single-sign-on environment
• Managed website hosting, domain transfers, and corporate email accounts, ensuring 99% uptime and consistent brand presence
• Facilitated integration of desktop software, mobile devices, peripherals, and network hardware; resolved compatibility issues, implemented virus/spam protection, optimized performance, and performed data backups using ARCserve Backup, improving device reliability

Aug 2010 – Jul 2012 · 1 yr 11 mos

• Initialized and maintained communication with media, fans, NGOs, and European football institutions, which expanded our media presence & outreach campaigns
• Served as the first point of contact for new players, screened candidates, and scheduled meetings and testing using Google Calendar, which streamlined the onboarding process
• Organized promotional events, including a national TV appearance, which increased media coverage and raised public awareness of American football in Croatia
• Coordinated charity evenings with volunteer groups and foundations, delivering assistance to sick individuals and raising community support
• Maintained the official team Facebook page by posting updates and responding to comments, which grew follower engagement
• Developed the aPlaybook web tool, an American football playbook application that lets coaches sketch, drag-and-drop players, adjust personnel groups, and draw motions on an HTML5 canvas; built with JavaScript, allowing coaches to create and present play ideas more efficiently

Jul 2010 – Jun 2012 · 1 yr 11 mos

• Designed and developed the team website - including forum, gallery, and content management - launched the site to enable team communication and media sharing, then handed over maintenance to a new administrator
• Maintained the official team Facebook page, creating posts with Facebook to grow follower engagement and keep the community informed

Jul 2010 – Sep 2012 · 2 yrs 2 mos · Zagreb, Croatia

• Developed and integrated new core modules for a custom University CMS-including a newsboard with text, images, file uploads, permission controls, and cross-board visibility; a homepage banner rotation system with scheduled intervals; and a file manager with tree-view navigation and public/private repositories - using JavaScript & local servers, which streamlined content publishing and reduced manual admin effort
• Constructed the FMENA student portal front-end for student-affairs information and repository file access, enabling students to retrieve documents 30% faster
• Delivered optimized content and user controls based on university staff UAT, refactoring deprecated UI code and reducing page load times by ~20% by optimizing SQL queries, while improving daily operational efficiency
• Deployed a touchscreen web kiosk and programmed an accessible virtual keyboard for visually impaired operators, increasing kiosk usage among accessibility-focused users
• Developed a custom network display tool that parses NMAP scan data into draggable, filterable node visualizations for the university’s computer operations center, improving incident detection speed
• Collaborated with faculty to develop satellite websites, which improved information availability

Jan 2002 – Jun 2009 · 7 yrs 5 mos · Croatia, Zagreb

• Concert/Tech Section member - electrical, construction, plumbing & various repairs; later acted as a Team Lead for the Tech Section