About us

Gismart is a value-driven mobile app developer with a strong presence in the Health & Wellness, Utilities, and Music app markets. We have recently reached an important milestone of 1B+ downloads worldwide, moving closer to our mission of supporting people on their self-improvement journeys.

Headquartered in London, Gismart is a global company with a team of 400+ people across Europe and beyond. We bring together professionals from entertainment, music, and tech backgrounds, combining creativity, product thinking, and strong execution to build apps used by millions of people worldwide.

Our mission is to become a stepping stone on our customers’ journeys of self-improvement.

Our values

• Deliver what matters

• Respect and support others

• Initiate and own

• Voice openly

• Execute with quality

If you are passionate about mobile products and want to work on apps with real scale, Gismart is the right place to grow, take ownership, and make an impact.

About the project

At Radiotech, we believe music should be accessible to everyone — not only to those who grew up taking lessons.

We are a product team inside the Gismart ecosystem, focused on building and growing music apps across iOS and Android. Our portfolio includes products with millions of installs, rich functionality, and a long history of product development. These are apps that help users not only consume music content, but also play, learn, practice, create, interact, and enjoy the process.

Our goal is to make music feel more approachable, engaging, and human for beginners, hobbyists, and people who want to bring more music into their daily lives.

Responsibilities

• Own and lead user acquisition strategy for Hello Piano across paid channels.

• Partner closely with the creative production team to brief, test, and iterate on ad creatives (including playables, video, and static assets) that drive performance.

• Analyze campaign performance across channels, translating data into actionable insights and optimization recommendations.

• Identify and lead expansion into new geographies, adapting acquisition strategy and creative to local market dynamics.

• Build and maintain automation and auto-rules processes to optimize bidding, budget allocation, and campaign management at scale.

• Monitor key metrics (CPI, ROAS, LTV, Sub2Paid, retention) and report on performance against targets.

• Collaborate cross-functionally with product, analytics, and growth teams to align acquisition efforts with broader business goals.

Requirements

• 2+ years of experience in user acquisition / performance marketing.

• Proven track record managing paid UA campaigns across major channels (Meta, Google, AppLovin, TikTok, etc.) with meaningful budget ownership.

• Strong analytical skills - comfortable working with LTV, ROAS, CPP, retention, and cohort-based metrics.

• Experience with MMPs and analytics tools (AppsFlyer, Adjust, or similar).

• Hands-on experience building or managing automation/auto-rules for bid and budget optimization.

• Familiarity with creative testing processes and ability to brief/collaborate effectively with creative teams.

• Experience expanding products into new markets/geos, with an understanding of localization and regional performance dynamics.

• Strong Excel/Google Sheets skills; SQL or scripting (e.g., Google Apps Script) is a plus.

• Excellent communication skills and ability to work cross-functionally with product, creative, and analytics teams.

Hiring process:

• Screening

• Technical Interview

• Final interview

Employee Benefits:

• Remote-First Culture: Our team is diverse and extensive, just like our product portfolio. We provide a flexible working schedule and let you work anywhere in the world, either remotely or in one of our corporate hubs.

• Сoworking Compensation: We provide 100% compensation for coworking spaces in Ukraine (except Kyiv, where we have a cozy and autonomous hub) and 50% compensation for coworking spaces worldwide to make sure that everyone has a comfortable and inspiring workspace.

• Free Office Lunches: We want you to stay fueled and focused, so we provide delicious free lunches for everyone working from our hubs. It’s one less thing for you to worry about during a productive workday.

• Public Holidays Policy: Gismart observes public holidays based on the Ukrainian or Polish holiday calendars. Employees working in other locations are entitled to 12 public holidays per year.

• 100% Sick Leave Compensation

• Mental and Physical Health: To help you stay happy and healthy, Gismart will partially cover your medical insurance, sports activities, therapy costs.

• Personal Equipment Policy: Of course, we’ll provide you with all the equipment you need or cover the maintenance cost for your own tools.

• Personal Learning and Development: We love to see you learn and grow, so Gismart will cover 70% of your professional development courses. We’ll also pay for 100% of corporate English courses.

• Time-Off Policy: Every employee gets 18 working days of paid vacation and 3 personal days per year, with an extra day added for each year at Gismart.

• Corporate Events: We are remote-first, but we love meeting up in person. Whenever possible, we organize corporate events and team-building activities across all Gismart hubs.

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