United Tech

Designs global mobile and web apps

Head of Machine Learning

Applied Machine LearningConfirmed live in the last 24 hours

Full-timeKyiv, UkraineNo salary listed

About the Job

Requirements

Proven ability to implement Data Science best practices, including reproducibility, A/B testing, and ML monitoring.
Strong track record of maintaining model quality, including performance, drift, and latency.
Advanced Python skills, including pandas, scikit-learn, NumPy, and XGBoost; PyTorch or TensorFlow is a plus.
High-level SQL expertise, including work with large datasets and query optimization.
Hands-on experience with ML pipelines, orchestration using Airflow or Prefect, and monitoring using Evidently, MLflow, or Prometheus.
Experience with GCP.
Solid understanding of A/B testing, causal inference, and statistics.
Familiarity with architecture fundamentals, including APIs, data pipelines, and microservices at the integration level.
Cloud experience with AWS or Azure.
Knowledge of distributed computation tools such as Spark or Cloud Run.
Proven track record with generative AI or NLP model deployment.
Experience in startups or high-growth companies.

Responsibilities

Build, scale, and develop the Machine Learning team, including hiring, mentoring, and performance evaluation.
Define and execute a Machine Learning strategy aligned with business priorities, and plan the department’s roadmap.
Identify and drive new ML initiatives.
Analyze existing algorithms and define the best ways to improve them.
Prioritize initiatives based on business impact, including ROI and time-to-market.
Oversee the full lifecycle of ML projects, from problem formulation to deploying models into production, ensuring execution and quality of results.
Contribute directly to the implementation of key ML projects.
Provide regular weekly, monthly, and quarterly reporting to stakeholders.
Collaborate closely with product managers, analysts, engineers, and C-level executives.

Desired Qualifications

PyTorch or TensorFlow experience.
Publications, conference speaking, achievements on Kaggle, or open-source contributions.
Experience optimizing company processes through AI solutions.
Experience implementing AI tools across departments, including development, support, or marketing.

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide. Are you in?

About the role: This is a role for a leader who thrives in a fast-moving product environment, where challenges fuel growth and every decision shapes the future. With United Tech you will have the freedom to design, build, and re-engineer processes from the ground up, working side by side with a team that values initiative, knowledge sharing, and bold goals. Your ideas will directly influence revenue, and you will see the tangible results of your work reflected in key financial metrics. We move fast, we cut through bureaucracy, and we take on complex challenges that push both personal and professional boundaries, limited only by the scale of your ambitions.

In this role, you will

Build, scale, and develop the Machine Learning team, including hiring, mentoring, and performance evaluation

Define and execute a Machine Learning strategy aligned with business priorities, and plan the department’s roadmap

Identify and drive new ML initiatives

Analyze existing algorithms and define the best ways to improve them

Prioritize initiatives based on business impact (ROI, time-to-market)

Oversee the full lifecycle of ML projects, from problem formulation to deploying models into production, ensuring execution and quality of results

Stay hands-on: contribute directly to the implementation of key ML projects

Provide regular reporting to stakeholders on a weekly, monthly, and quarterly basis

Collaborate closely with product managers, analysts, engineers, and C-level executives

It’s all about you

Proven ability to implement best practices in Data Science: reproducibility, A/B testing, ML monitoring
Strong track record in maintaining model quality (performance, drift, latency)
Advanced Python skills (pandas, sklearn, numpy, xgboost; pytorch/tf is a plus)
High-level SQL expertise (large datasets, query optimization)
Hands-on experience with ML pipelines, orchestration (Airflow, Prefect), and monitoring (Evidently, MLflow, Prometheus)
Experience with GCP
Solid understanding of A/B testing, causal inference, and statistics
Familiarity with architecture fundamentals (API, data pipelines, microservices — integration level)
Cloud experience with AWS or Azure
Knowledge of distributed computation tools (e.g., Spark, CloudRun)
Proven track record with generative AI/NLP model deployment
Experience in startups or high-growth companies
Publications, conference speaking, achievements on Kaggle, or open-source contributions

Would be a plus

Experience optimizing company processes through AI solutions
Implementation of AI tools across departments (development, support, marketing, etc.)

What we offer

Care and support:

20 paid vacation days, 15 sick leave days, and 6 additional days off for family events

100% medical insurance coverage

Sports and equipment reimbursement

Team building events, corporate gifts, and stylish merch

Financial and legal support

Maternity Recovery Support Allowance

Position retention and support for those who join the Armed Forces of Ukraine

Participation in social initiatives supporting Ukraine

Comfortable working environment:

Work from our Kyiv hub or remotely with a flexible schedule

Modern equipment or depreciation of your own tools

Investment in your future:

Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche

70% of our heads and leads have grown into their roles here – so can you!

Performance-oriented reviews and Individual Development Plans (IDPs)

Reimbursement for professional courses and English classes

Corporate library, book club, and knowledge-sharing events

Hiring process

Intro call
Technical Interview
ML System Design Interview
Final Interview
Reference check
Offer

About the Company

United Tech

Designs global mobile and web apps

United Tech builds and maintains multiple mobile and web apps for a social networking audience. The company designs and ships six products that connect people, with features that lead to millions of users and tens of millions of matches each month, across the USA, Canada, Latin America, Europe, and the Middle East. Its apps work by letting users sign in, interact, and discover and connect with others through messaging, profiles, and matching mechanisms, all delivered through mobile and web interfaces. What sets United Tech apart is its large, globally distributed team (250+ specialists across 13 countries and 3 continents) and its remote-first operations, enabling fast growth and consistent product improvement. The company aims to shape the future of the social networking industry by expanding its user base, improving the user experience, and reaching top market positions with scalable, user-centered mobile and web apps.

Company size: 201-500
Company stage: Not listed
Total funding: Not listed
Headquarters: Kyiv, Ukraine
Founded: 2016

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