Daniel Stefanov, Product Manager in Sofia, Bulgaria
Daniel is available for hire
Hire Daniel

Daniel Stefanov

Verified Expert  in Product Management

Product Manager

Sofia, Bulgaria
Toptal Member Since
January 21, 2022

Daniel is a highly-effective product development and delivery expert with a proven track record in developing mobile apps and eCommerce web projects. He has over nine years of experience and deep knowledge in creating product requirements, setting up projects and teams from scratch, leading and motivating Agile teams. With a keen eye for detail, Daniel is a success-driven and target-oriented professional focused on delivering business value and delighting stakeholders.

Project Highlights

Quipp Live Trivia
Launched the most successful EU-wide trivia app with more than 50,000 daily active users (DAU).
UHRD Audio Streaming
Created a robust MVP scope for a next generation mobile audio streaming platform


Work Experience

Senior Product Manager

2023 - 2023
  • Led a team of developers, QAs, BAs, and UI/UX in order to deliver a unique application for decentralized finance operations.
  • Successfully launched the mobile application for iOS and Android and took an active part in the series A funding of the project.
  • Started a complete redesign of the app as soon as Polygon endorsed the project.

Business Analyst | Product Owner

2022 - 2023
Berry Appleman & Leiden
  • Worked in close collaboration with business stakeholders to launch a work automation process using BOTs.
  • Successfully launched and maintained the service within multiple areas of the company.
  • Led a cross-functional team spread across multiple locations. The group comprised a development force, QA, UI/UX, and DevOps.

Business Analyst | Product Owner

2022 - 2023
Berry Appleman & Leiden - Main
  • Delivered a successful, fully automated process to ensure time and efficiency were improved.
  • Implemented a complete Agile software development approach.
  • Brought forward the necessity to automate the specific, fully non-digital processes so that the client can gain more customer exposure.

Program and Product Manager

2019 - 2022
ProSiebenSat.1 Media
  • Steered an Agile team of mobile developers, QA engineers, and UI/UX designers in defining, shaping, and delivering cutting-edge digital entertainment platforms.
  • Acted as the product owner for the Quipp 2.0 relaunch.
  • Played a key role in rebranding and repositioning the digital presence of the video streaming company.
  • Followed the Agile manifesto and adapted it according to the team's needs.
  • Collected, analyzed, and set in motion requirements from multiple stakeholders and business leaders.
  • Served as a program manager for the QUipp 2.0 and Supernova video streaming platforms, adjusting the long-term strategy of the products and supporting the group initiatives in the promotion and viewer-based analysis.

Project Manager

2018 - 2019
  • Took part in the digital transformation of the Danish film institute's online library.
  • Acted as a project manager for a sports news digital portal with an online subscription model.
  • Played a key role as a project manager and business analyst of multiple smaller-scale requests for proposals (RFP) by setting up user scenarios and storyboards, wireframe preparation, initial MVP scope alignment, and more.

Product and Development Manager

2017 - 2019
  • Acted as the development and project lead for TotalK, the first mobile application developed to serve the needs of deaf people.
  • Established QA processes and procedures as the QA lead.
  • Developed a successful go-to-market strategy and conducted P&L management assignments.
  • Recruited, onboarded, and trained the new members while managing retention, compensation, and benefits and defining the general HR strategy.

Software Project and Delivery Manager

2014 - 2018
Base Systems
  • Conceptualized, defined, and implemented the first deaf accessibility mobile apps in Bulgaria.
  • Created the first online megastore for the biggest home textiles manufacturer in Bulgaria.
  • Worked on multiple learn and grow projects with Samsung Bulgaria, including creating the first mobile academy and operating system, Tizen.

Quipp Live Trivia

Launched the most successful EU-wide trivia app with more than 50,000 daily active users (DAU).

Quipp is a mobile live quiz show positioned between linear television and digital app products. It is aimed at all smartphone users aged 18 and over who miss the transient communal experience during their online media consumption, as used to be the case when watching TV quizzes with friends. This communal experience is further enhanced by fixing a live date daily at 8 p.m. and sharing the prize money among all winners.

The new quiz app fills a gap between the TV show and the classic app. It only works at a specific time of day and simultaneously facilitates a group experience with your group of friends. The interface is consistently oriented towards the user and is constantly being optimized. A minor sensation that brings linear TV up to a contemporary level.

Deaf Accessibility Application

The first of its kind mobile app for the inclusion of deaf and hard-of-hearing people in public organizations and schools.

TotalK is the first application in the country providing equal access for deaf and hard-of-hearing people. It had two mainstreams, a video relay service and a speech transformation to text. It was widely used in public organizations, banks, railway stations, and more than 60 public schools in a joint effort with the Ministry of Education.

UHRD Audio Streaming

Created a robust MVP scope for a next generation mobile audio streaming platform

As part of the scope of work, what had to be created was a robust MVP, select technical vendors, and create all the user journeys and flows. Worked with the development team, leadership team, and UX.

Product Leader

Product School


Certified Product Manager

Product School


Atlassian Suite, Jira, Roadmunk, Figma, Instabug


Monday.com, Android TV, Apple TV, Drupal, Magento, Magento 2, WooCommerce


Agile, Agile Product Management, Agile Software Development, Scrum, Agile Project Management

Industry Expertise

Digital Banking


Roadmaps, Product Management, Project Management, Scaled Agile Framework (SAFe), eCommerce, iOS, Android, Product Requirements Documentation (PRD), Stakeholder Management, Product Owner, Product Ownership, User Stories, Backlog Grooming, Backlog Management, User Flows, Audio Streaming, Video Streaming, Mockups, UX Flows, Software Development, Quality Assurance (QA), Leadership, Team Leadership, UX Design, User Experience (UX), Product Design, Web Development, Manual QA, Fire TV, Back-end, Ionic 2, Release Management, Accessibility, Agency, WordPress, Mobile UX, React Native, Business Analysis, Business Requirements, Discovery Workshops, User Interviews, User Interface (UI), Process Flows, Process Automation, Robotic Process Automation (RPA), Online Banking, Crypto, Currency Exchange, Databases, Program Management, Agile Program Management

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring