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#20 Point of Sale system cashier.sweedpos.com, the primary web application used by all cashiers in each store
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SweedPos [ ex WALLI IT, INC ] [ U.S.-Based Start-Up ] |
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| [ Application Type ] | [ B2B ][ SaaS ][ Web Application: Online Cash Register for POS Systems ] |
| [ Contract Position ] | Front-End Lead Engineer ➜ Team Lead ➜ Tech Lead |
| [ Role ] | Front-End Team Lead / Tech Lead / Lead Developer [ in a team of up to 4 front-end developers ] ● 70% coding, 30% other tasks. ● I. Responsibilities as a Lead Developer: ● Collaborating on the design of client-server architecture. ● Developing business modules of increased complexity. ● Developing essential communication protocols. ● Integrating with APIs. ● Integrating with external equipment [ e.g., USB scanners ]. ● Identifying, troubleshooting, and resolving critical, intricate, and non-trivial issues and incidents. ● Writing automated unit tests. ● Conducting thorough code reviews. ● Assisting the team in designing optimal solutions. ● II. Responsibilities as a Tech Lead: ● Designing the system architecture. ● Creating, initializing, and launching the project into production. ● Managing a critical area of responsibility: minimizing errors and malfunctions due to their high cost. ● Ensuring data consistency across synchronous and asynchronous communication channels. ● Ensuring both backward compatibility of APIs and long-term usability. ● Ensuring and monitoring code quality through the implementation of best practices and development standards. ● Providing mentorship to team members to foster their technical growth. ● III. Responsibilities as a Team Lead: ● Estimating development tasks. ● Meeting deadlines and ensuring timely delivery. ● Collaborating closely with the team [ QA, Devs, Designers, Tier-3 Support ] and business stakeholders [ PO, CEO ]. ● Managing business stakeholders' expectations and ensuring alignment of development with business goals. |
| [ Project Activities ] | [ July 2017 ➜ October 2024 ] |
| [ Project Goal ] | Create a web application specifically designed for cashiers to use on in-store tablets and desktops. |
| [ Project Result ] | Successfully launched for commercial use [ 2018 ➜ Present ]. |
| [ Key Achievements and Personal Contributions ] | ● Creator and Sole Developer: Led the launch phase into the production environment as the creator and sole developer. ● Expedited MVP Launch: Accelerated the release of the MVP by leveraging the core front-end library, reducing time-to-market. ● 100+ Significant Releases: Successfully delivered over 100 impactful releases, driving product growth and enhancing system stability. ● Exceptional Release Stability: Maintained an extremely low rollback rate across all releases. ● Complex Business Logic Modules: Designed and implemented dozens of highly intricate and non-trivial business logic modules, addressing critical operational needs. ● Multiple Operating Modes: Rapidly designed and implemented support for various application operating modes, including e-commerce and guest modes, improving flexibility and user experience. ● Thriving Under Pressure: Consistently excelled in high-pressure environments with tight deadlines, maintaining both high performance and quality. |
| [ Tech Stack & Work Env. ] | ● Project #24 dependencies. ● Paradigms: Object-Oriented [ OOP ], Functional [ FP ], Event-Driven [ ED ]. ● Flux, Container / Presentational. ● User-First [ UCD ], Iterative SDLC. ● Monolithic [ +lazy loaded bundles and modules ]. ● Responsive Design [ Tablet, Desktop ]. ● Cross-browser Rich SPA, Complex RTA [ Real-Time Application ]. ● WebSocket, JSON-RPC, CORS. ● SSO, PIN Authentication / Authorization. ● Cloudflare Caching, HTTP Caching. ● Git / Git Submodules, WebStorm. |
| [ Contract Period ] | [ 7 years, 4 months ] [ July 2017 ➜ October 2024 ] |
| [ Company Specifics ] | Turnkey product development in the pharmaceutical distribution sector for retail. |
| [ Company Profile ] | Start-up [ 2017/2018 ] ➜ Established and successful company [ 2023/Present ]. |
| [ Company's Technology Stack ] | Frontend: React & TypeScript. Backend: .NET & Microsoft SQL Server [ Java was partly used ]. |
| [ Working Schedule ] | [ Full-time: 40-60 hours per week / Long-term contract / Hybrid ] |
