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Daniel Dereniowski

Certified Salesforce / Front-end developer

Experience

  • 2024 - recent

    Accenture

    Certified Salesforce / Front-end Developer

    • From the beginning of my career, I've been involved in an online store project for one of the largest drugstores in Poland, and my collaboration with this client continues to this day. My day-to-day responsibilities include delivering new functionalities, debugging, testing, and maintaining the storefront. I have the opportunity not only to expand my technical knowledge but also to build long-term relationships with clients, understanding their business needs and translating them into concrete solutions.
    • While working with the aforementioned client, I was also involved in the design of custom internal applications (an application for handling returns, an application for convenient internal API management, and an internal component library). We implemented those projects using modern tools and popular web technologies (React, TypeScript, RTK Query), allowing us to create a fast, scalable, and user-friendly solutions.
  • February 2024

    Salesforce

    B2C Commerce Developer certificate

    • View certificate
    • I earned the Salesforce B2C Commerce Developer certification, which validated my skills in working with the Salesforce Commerce Cloud platform. The exam covered topics related to e-commerce, system architecture, configuration, implementing server-side and client-side logic, and integrating with external services. This certificate allowed me to consolidate my knowledge and validate the practical experience I gained working on e-commerce applications.
  • 2022 - 2024

    Accenture

    Junior Salesforce / Front-end Developer

    • The new position brought new challenges – creating an online store from scratch for a client in the food industry. This allowed me to participate in the entire process – from concept and design, through the implementation of views and functionalities, to production deployment.
    • In parallel, I continued working on an online store project for one of the largest drugstores in Poland, allowing me to continuously hone my programming skills, learn new secrets of web development, and deepen my knowledge of e-commerce system architecture.
    • For a period, I also managed and maintained an e-commerce application for a global client in the tobacco industry. This experience allowed me to develop both my soft skills and my English language skills.
  • 2021 - 2022

    Accenture

    Intern front-end developer

    • I gained my first commercial experience as a front-end developer on a large e-commerce project for one of the largest drugstores in Poland. It was a challenge that immediately allowed me to tackle large-scale coding and understand the realities of working in an international team.
    • At the same time, I began learning the Salesforce environment — both through online courses and hands-on project assignments. This allowed me to quickly connect theory with practice, and immediately put each new concept to the test in a real-world context.
    • First few months on the job showed me the importance of patience, precision and an openness to learning. I also realized that in this industry, every day brings an opportunity to develop one step further.

Projects

  • FachApp

    Next.js
    Node.js
    TypeScript
    Tailwind
    Stripe
    MongoDB
    item — zrzut ekranu 1
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    FachApp is a fullstack web platform designed to streamline the process of reporting, managing, and resolving issues with the help of verified specialists. The platform supports a structured ticket lifecycle — from submission and specialist evaluation, through payment processing with Stripe, to resolution and moderation — reflecting real-world business logic. It was built to solve a genuine problem: connecting people who need help with qualified professionals in a transparent and efficient way.

    The project is built on a monorepo architecture, consisting of a Next.js 15 frontend with App Router and a dedicated Node.js/TypeScript backend service handling authentication, ticketing, and payments. The backend exposes a fully documented REST API via Swagger, from which RTK Query client code is automatically generated — ensuring type safety and eliminating boilerplate across the stack. Key technical decisions include JWT-based auth with token refresh, role-based access control across three user roles, Stripe webhook integration, and a well-defined status transition system enforced on both the frontend and backend layers.

  • Pedal & Plate

    Vite
    React
    Material UI
    SASS
    Django REST
    PostgreSQL
    Figma
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    The application serves several key purposes. Primarily, it is a company website (business card) for professional dietitians. It also features a blog and an online store. Website content is managed via an administration panel built using the Django Rest Framework. This panel is hosted as a separate application that works with a front-end application in React. Access to the panel is limited to accounts with admin privileges. Upon registration, users fill in their details, which are automatically used in the purchasing process. Order history is available in the Customer Panel.

    Before beginning the actual app development process, I created detailed user interface mockups in Figma. These helped me plan the screen structure, element layout, and overall design aesthetic. This step allowed me to better understand and analyze the app's functionalities and significantly streamline the development process – creating pages without prior design planning often leads to chaos and delays project completion.

  • Azymut Lab

    Next.js
    Sanity
    Tailwind
    TypeScript
    Vercel
    item — zrzut ekranu 1
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    The website of the Azymut Lab architectural studio is a modern showcase showcasing its design and construction services. The project includes subpages: a homepage, a proposal, a portfolio, a contact form, and a recruitment page. The website's content is fully managed by a CMS panel powered by Sanity.io, allowing clients to update content, images, and contact details without touching the code. The application was built using Next.js 16 with App Router, ensuring high performance thanks to server-side rendering and image optimization. The contact form supports email sending via Resend, with client-side data validation. The design is SEO-optimized, including dynamically generated meta tags, a sitemap, robots.txt, and Schema.org structured data tailored to the local market.

    Before coding, I designed the user interface directly in code, iterating between visualizations and implementation. The aesthetic adopted is based on modern minimalism – a subdued color palette, serif typography, and plenty of space – which coherently reflects the studio's character and the industry in which it operates.

  • Azymut Studio

    WordPress
    WooCommerce
    item — zrzut ekranu 1
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    Azymut Studio is an e-commerce website and digital showcase for a Polish ceramic craft studio specialising in handmade ceramic lamps. The project combines a fully functional online store built on WooCommerce with a visually rich brand presentation — designed to reflect the warmth, texture and authenticity of handcrafted objects.

    The website was built on WordPress using Blocksy theme and Elementor, both heavily customised to match the studio's organic, artisan aesthetic. The design is fully responsive across mobile and desktop. The WooCommerce store is currently in its final preparation stage ahead of launch.

Skills

Programming tools

HTML

JavaScript

jQuery

Node.js

TypeScript

React

Next.js

CSS

SASS

Tailwind

Sanity

Redux

Other skills

Salesforce

Git

Docker

Figma

MongoDB

MySQL

PostgreSQL

WordPress

WooCommerce

About

Hello, I'm Daniel!Front-end developer with over

5 years of professional experience.

Daniel Dereniowski — zdjęcie profilowe

I focus on creating modern and scalable web applications, adaptable to all devices supporting web browsers. I specialize in React/Next.js and TypeScript, and the e-commerce platform - Salesforce.

I have developed online stores for international clients from various industries (grocery stores, drugstores), and have also created web applications tailored to specific needs, including a returns management application for warehouse employees and a visual layer for a widely used order processing API.

I collaborate daily with UX/UI designers, backend teams, and product owners, and also support junior developers. In my work, I place great emphasis on quality and best practices - I prioritize transparent solutions and readable code that is easy to maintain and modify, also by other team members.

After work, I pursue my passion - basketball 🏀 . Sports competition allows me to work at 110% when facing new challenges.

Contact

I'm ready for a new challenge!

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