Why work with Unifonic?

AI Engineering Lead -Marketing & Personalization

Job description

Proudly voted a Great Place to Work®, we are a dynamic startup in the SaaS space that is revolutionizing the way businesses communicate. Our team is made up of 500 energetic and passionate Unifones who are dedicated to delivering the best possible experience to 5000+ customer-centric companies.

We pride ourselves on our fun and collaborative work environment, where creativity and new ideas are constantly encouraged. As shareholders in the business, we’re so much more than a group of passionate communicators. We are Unifones. Join our team and be a part of something big!

Meet the team!

The Marketing & Personalization Squad partners with Product, Data and Marketing to ship real‑time recommendations and predictive insights that lift conversion, retention and lifetime value.

As a Machine Learning Tech Lead – Marketing & Personalization, you will draw on deep, hands-on experience in delivering production-grade recommendation & personalization AI solutions. This role is ideal for someone who has "been there and done that" in building and scaling large-scale personalization and recommendation systems deployed to millions of users in production. You will own the end-to-end personalization platform, from data pipelines to real-time inference APIs, lead a lean, senior team, and rapidly deliver measurable commercial outcomes hands-on.

Help us shape the future of communication by:

• Defining the technical roadmap, architecture, and coding standards.

• Building and operating batch, near‑real‑time and streaming pipelines using systems such as Spark, Airflow, Kafka or RabbitMQ.

• Training, evaluating, and deploying models for recommendations, segmentation, churn, conversion, and CLV.

• Serving models through API, containerized with Docker, orchestrated on Kubernetes, and fully automated via CI/CD, with excellent performance and following best software engineering/architecture principles, ideally with Java but also possible in Python.

• Maintaining high‑volume, low‑latency storage and caching with technologies like MySQL, Cassandra, Redis or Memcached.

• Embedding ML observability, A/B testing, and KPI tracking in every release.

• Upholding GDPR and Saudi PDPL compliance and championing responsible AI.

• · Hiring, coaching and inspiring engineers; running design and code reviews; fostering a culture of clean architecture and SOLID principles.

Job requirements

What you’ll bring:

• 7+ years delivering production ML, including 3+ years leading engineers or squads.

• Proven success with large‑scale personalization & recommendation systems.

• Deep knowledge of:

• Recommendation algorithms (collaborative, content‑based, hybrid, matrix factorization, graph).

• Predictive modelling with XGBoost, LightGBM, CatBoost or similar.

• Clustering and dimensionality reduction (K‑Means, DBSCAN, PCA, UMAP).

• Sequence or transformer networks for behavioral data.

• Expert Java or Python plus strong software engineering fundamentals. Bonus:

• Big‑data competence – Spark, SQL, Snowflake or Vertica.

• MLOps at scale: Docker, Kubernetes, MLflow or Kubeflow, model registries, automated CI/CD.

• Real‑time patterns with Kafka Streams or Redis.

• Fluent English; strong written and verbal communication; ability to mentor and unblock teams.

• Hands‑on with Hugging Face, LangChain, or other LLM frameworks for marketing copy or conversational flows is preferred.

• Experience with feature stores and online‑offline feature parity is preferred.

• Knowledge of reinforcement learning or bandit algorithms for campaign optimization is preferred.

• Familiarity with telecom protocols and high‑volume messaging (SMPP, SMSC) is preferred.

• Arabic language knowledge is preferred.

As a Unifone you’ll receive a range of benefits:

• Competitive salary and bonus

• Unifonic share scheme (we are all owners!)

• 30 holiday days after the first anniversary

• Your Birthday off!

• Spend up to 25 days per year working from anywhere in the world!

• Paid leave for new parents

• LinkedIn learning license

My information

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Questions

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What attracted you to Unifonic? And what is the value you can add to Unifonic? * Do you know anyone who is currently working for Unifonic? If yes, kindly list the names and your type of relation with them? * Do you have at least 4 years of full-time, post-graduate experience shipping machine learning systems to production? * Do you have at least 1 year of experience leading engineers (as a technical lead, staff engineer, or manager) with direct accountability for architecture and delivery? * Have you built and owned a real-time personalization or recommendation service handling at least 1,000 requests per second in production * Is your primary production language for ML services Python, Java, Go, or another language? * Have you used any of the following data-streaming frameworks in production for feature pipelines: Kafka Streams, Apache Flink, or Spark Structured Streaming? * List the largest dataset (rows or events) you have trained a recommendation model on and briefly outline the modelling approach and offline metrics achieved * What is your current location of residency? * In case you are selected for the role, how soon can you join? * What is your current monthly salary? Detail it with the currency please. * What are your monthly salary expectations? *

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