Staff Data Scientist

Title: Staff Data Scientist Location: Lviv, Ukraine

Company Overview

Robots & Pencils is an applied AI engineering firm building the next frontier of business architecture. We design and ship AI co-workers that integrate into enterprise operations and deliver measurable results for our clients. We're all in on AWS, combining deep UX capability with senior engineering talent to get AI into production fast and keep it there.
We’ve earned the trust of leaders across Consumer Products and Retail, Education, Energy, Financial Services, Healthcare, and Manufacturing and more, and earned a reputation as the nimble alternative to traditional global systems integrators. Founded in 2009, with delivery centers in Canada, the United States, Eastern Europe, and Latin America, we are smaller, faster, and more senior by design. Our teams average 15+ years of experience. We move fast, sweat the details, and build things that actually ship.

Position Overview

As a Staff Data Scientist, you own the modeling work behind our hardest AI and machine learning problems: framing ambiguous business questions, building and validating models, and getting them into production. You bring deep applied ML and statistical rigor, the engineering judgment to ship at scale, and the credibility to explain it all to a room of executives.

You’ll work alongside scientists, data engineers, developers, and product partners across client engagements, with real autonomy over technical direction. You set the standard for scientific rigor, mentor junior data scientists, and thrive where the problem is ambiguous, the data is messy, and the answer has to work in production.

Why This Role Matters

Staff Data Scientists are where Robots and Pencils’ promise of “production-ready AI in 30 to 45 days” is backed by evidence. On the engagements you lead, you decide which approach is worth building, how success gets measured, and whether a model is ready for real users. The work moves only as fast as someone is willing to own the science, test the hypothesis, and ship the result.

What You’ll Do

Craft & Delivery

• Design, build, and evaluate predictive and prescriptive models across domains such as customer behavior, operational efficiency, and personalization
• Apply machine learning, deep learning, and statistical techniques to solve real-world business challenges
• Drive end-to-end ML and GenAI projects with a high degree of ambiguity, scale, and complexity, from proof of concept through production
• Build, optimize, and deploy models into production, working with scientists and software engineers to deliver solutions that last
• Establish scalable, automated processes for large-scale data analysis, model development, validation, and serving
• Run A/B and multivariate experiments and apply causal inference to validate hypotheses and measure impact

Collaboration & Communication

• Analyze large, complex datasets and translate what you find into clear, strategic recommendations
• Explain scientific methodology and results to technical and non-technical audiences, using data visualization that makes the point
• Partner with product managers and business stakeholders to identify opportunities and frame data science solutions
• Work closely with data engineers, analysts, and software developers to build scalable, data-powered applications

Leadership & Influence

• Serve as the technical practitioner in AI/ML, leading efforts within your team and across other teams
• Research new and innovative science approaches and bring the best of them into client work
• Mentor junior data scientists, supporting their technical development and scientific rigor
• Build reusable assets, tools, and processes that increase team velocity and impact

What You’ll Bring

• 5+ years of professional experience in data science, statistics, and applied machine learning, including 3+ years building models for business applications
• PhD, or a Master’s degree with 4+ years of experience, in Computer Science, Computer Engineering, Machine Learning, Statistics, Mathematics, Engineering, or a related quantitative field
• Deep proficiency in Python or R, with strong skills in libraries like scikit-learn and TensorFlow/PyTorch, and fluency in models, algorithms, and ontologies
• Experience programming in Java, C++, or a related language
• Proven track record in statistical modeling, time series forecasting, NLP, or optimization
• Experience in one or more of: algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, or high-performance computing
• Experience designing and analyzing controlled experiments (e.g., A/B testing, uplift modeling)
• Demonstrated success deploying models into production using APIs, pipelines, or ML frameworks
• Hands-on experience with Databricks, AWS (SageMaker), and Snowflake
• Experience building and deploying Data Mesh architectures

Helpful Extras and Unique Skills

• Palantir experience
• AWS cloud certifications or ML specialty credentials

You’ll Do Well Here if You Are

• A doer. You see something broken and fix it. You'd rather move on clarity than wait for certainty.
• A fast learner who knows you don't know everything. The AI landscape changes weekly. You're senior enough to know better and curious enough to keep learning anyway.
• Direct in a way that makes the work better. You give honest feedback. You'd rather have the hard conversation than blow smoke.
• Obsessed with craft. You know genius is in the details. You ship exceptional, not perfect, and you don't put your name on work you wouldn't stand behind.
• Built for ownership. You honor commitments, admit mistakes fast, and back your teammates when a decision costs something. No handoffs, no finger-pointing.
• All in. You treat clients' businesses like your own. You take the work seriously without taking yourself seriously.
• Resourceful when the budget, timeline, or team is tight. Constraints don't slow you down. They sharpen you.
• Calm when it gets hot. When scope, timeline, and stakeholders pull in three directions, you slow the room down enough to make the right call. You’d rather raise the hard trade-off in week two than absorb it in week eight.
• Glad to be in the room with people who care as much as you do. Our teams average fifteen-plus years of experience. We hire people who push each other to do better work.

We Offer

• 20 days of paid vacation.
• 15 days of unpaid vacation.
• All official public holidays off.
• 5 paid sick days without a doctor's certificate.
• Medical insurance.
• Military draft deferment (reservation) support.
• Cooperation under a gig-contract.