Data Engineer with Python

Job Description
Job Title:
Data Analyst Excel

Job Type:
Contract

Location:
Remote

Job Summary:
In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Key Responsibilities

• Conduct in-depth data analysis using Microsoft Excel to extract actionable insights and support decision-making across teams.
• Collaborate with project stakeholders to understand data requirements and translate them into meaningful analyses.
• Review, clean, and validate datasets to ensure accuracy, consistency, and integrity.
• Develop clear, concise reports and visualizations to communicate findings to both technical and non-technical audiences.
• Identify trends, anomalies, and opportunities in complex datasets, contributing to strategic initiatives.
• Document methodologies, results, and recommendations with meticulous attention to detail.
• Contribute expertise to enhance data-driven decision-making processes within the customer's team.

Required Skills And Qualifications

• Proven experience performing data analysis in a business environment using Microsoft Excel as the primary tool.
• Exceptional attention to detail and accuracy in data processing and reporting.
• Strong written and verbal communication skills, with the ability to clearly articulate analytical findings.
• Demonstrated ability to work collaboratively across teams to drive business outcomes.
• Solid understanding of Excel functions, formulas, and data visualization tools.
• Proficiency in identifying data inconsistencies and implementing corrective measures.
• Experience working in fast-paced, data-driven organizations.

Preferred Qualifications

• Experience supporting cross-functional teams with data insights to inform business strategy.
• Background in presenting analytical outcomes to diverse audiences.
• Familiarity with additional data analysis tools or business intelligence platforms.

About us

We were founded in 2017 with the motivation to reach people globally by giving them unique and unforgettable experiences with disruptive products. Our games have reached over 3.5 billion people. This could only be done by gathering exceptional talent and creating a culture to enhance team spirit and creativity. We are looking for passionate teammates to join our team!

What you’ll be doing

• Designing, running, and analyzing
  A/B tests
  to optimize gameplay mechanics, user experience, and monetization models
• Developing and maintaining
  player segmentation tools
  and strategies for personalized offers and engagement
• Tracking and evaluating
  core KPIs
  (DAU, retention, ARPU, LTV) through well-structured dashboards and reports
• Acting as the data partner for multiple teams (Product, Growth, Marketing), providing insights that shape roadmaps
• Comfortably managing multiple priorities with minimal guidance and adapting quickly to changing business needs

Desired skills and experiences

• 1+ year experience in data analysis, gaming, e-commerce, or digital products
• Familiarity with monetization models, player segmentation, and in-game economy
• Advanced SQL skills
• Python or R is a plus
• Experience in A/B testing methodologies
• Skilled in predictive analytics and modeling
• Ability to separate correlation from causation and manage biases in data
• Passion for Match Villains and mobile puzzle games in general

What makes our team so unique

• Feedback and transparency are at the heart of everything we do
• Exceptional and passionate people/team members
• Every idea counts
• Never-ending learning
• We never stop asking the questions “why” and “how”

Our Perks

• Team events and trips
• Great food
• On-site gym
• Full health benefits
• Compensation for paid military service
• Relocation support
• Good Job Games Coin Program that lets you have unforgettable experiences (e.g. Going on a cruise trip to Norway or seeing the Northern Lights)

This is an on-site role in Istanbul, Sarıyer. We do not offer a fully-remote working option.

Szukamy
Senior Data Engineera
do projektu budowy systemu
Automated Canary Analysis
dla dużej floty urządzeń
edge.
Celem systemu jest automatyczna analiza
telemetrii
po wdrożeniu nowej wersji oprogramowania i podejmowanie decyzji typu:
promote / pause / rollback
.

Zakres zadań

• analiza telemetrycznych danych time-series z urządzeń edge,
• praca z metrykami w środowisku Prometheus / VictoriaMetrics,
• tworzenie i optymalizacja zapytań PromQL / MetricsQL,
• wykrywanie anomalii, regresji i zmian po wdrożeniu nowej wersji,
• porównywanie kohort canary vs baseline / control group,
• przekładanie wyników analizy na automatyczne decyzje deploymentowe,
• współpraca z zespołami platform, SRE/DevOps i engineering.

Wymagania

• doświadczenie w pracy z danymi telemetrycznymi, metrykami lub time-series,
• znajomość Prometheus, VictoriaMetrics lub podobnych narzędzi,
• praktyczna znajomość SQL, PromQL, MetricsQL lub podobnego języka zapytań,
• umiejętność analizy danych zaszumionych i wykrywania anomalii,
• doświadczenie w Pythonie lub innym języku używanym do automatyzacji / data engineeringu.

Nice-to-have

• podstawy statystyki stosowanej: A/B, A/A, kohorty, testowanie hipotez,
• doświadczenie z CI/CD, canary deployments lub progressive delivery,
• znajomość SRE, observability lub reliability engineering,
• doświadczenie z dużą flotą urządzeń, edge computingiem lub systemami rozproszonymi.

Oferujemy

• Forma współpracy: Umowa o pracę lub B2B (do wyboru).
• Miejsce pracy: Kraków - 100% remote

Tags
#DataEngineer #Prometheus #SQL

About Us
Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about\-us/

About The Role
We are seeking a Billing Data Analyst to join our Billing and Data team. You will play a key role in analyzing financial performance, billing behavior, risk trends, and support operations. Your work will help drive better decision-making, reduce financial risks, and improve billing efficiency across all products. This role combines analytical rigor, statistical thinking, and cross-functional collaboration.

Key Responsibilities

• Monitor, analyze, and report on key billing and support performance indicators and emerging trends.
• Build and maintain data pipelines to ensure accurate, timely, and reliable data delivery.
• Apply statistical methods to project scenarios, assess “what-if” outcomes, and anticipate financial risks.
• Run A/B tests and experiments to evaluate billing and support strategies.
• Collaborate with cross-functional teams (Billing, Support, Finance, Product, Marketing) to align processes with risk-mitigation goals.
• Analyze the impact of marketing and product changes on billing outcomes, risk behavior, and customer support metrics.
• Provide actionable recommendations to improve billing performance and reduce disputes, churn, and operational inefficiencies.
• Document analyses, workflows, and data logic to ensure clarity and consistency.

Qualifications

• Bachelor’s degree in Data Science, Statistics, Computer Science, Economics, or a related field.
• Experience as a Data Analyst, ideally within fintech, subscription products, billing, or customer support.
• Strong SQL skills.
• Experience with popular BI tools such as Tableau, Looker, or similar
• Experience with Python or R
• Solid understanding of statistical analysis, forecasting, and scenario modeling.
• Experience running A/B tests and interpreting experiment results.
• Excellent problem-solving skills, attention to detail, and ability to work in a fast-paced environment.
• Strong communication skills, with the ability to explain findings to both technical and non-technical stakeholders.
• Curiosity, ownership mindset, and the discipline to maintain high-quality data work.

Nice to have

• Experience with BigQuery, ClickHouse, or any cloud data warehouse.
• Basic Python knowledge for data cleaning or simple analysis.
• Exposure to subscription businesses or payment systems.
• Understanding of disputes, chargebacks, declines, or fraud signals.
• Familiarity with DBT or data quality frameworks.

Location
Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits
Discover the perks of being part of our vibrant team! We offer:

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1nkrN76JlZkbKj9WSOhlT1\_mni\_CZeDkHdwfIjPXVwvk/preview?tab\=t.0

Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Interview Process
After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:

• Recruiter Screening (40 minutes)
• Technical Interview (60 minutes)
• Final Interview (30 minutes)

Life at Ruby Labs
At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.

This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.

Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.