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Data Engineer

Data Engineer

Mobile Staff Engineer, Platform/Infrastructure (all genders)

HelloFresh

Warsawfulltimelead

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Role description

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

About the role: What's in the Box
As a Staff Mobile Engineer in the Consumer Foundations tribe, you will provide technical leadership for the evolution of our mobile platform. Working alongside engineering and product teams, you will help shape the core architecture, tooling, and developer experience of our mobile applications. This is a high-visibility, high-impact opportunity to contribute to the transition of our white-labeled, multi-brand application from a native brownfield React Native setup to a highly scalable Greenfield architecture.

You will combine hands-on engineering with technical leadership, helping teams adopt scalable architectural patterns, shared tooling, and engineering best practices across the mobile ecosystem. By designing automated guardrails, shared infrastructure, and scalable developer workflows, you will enable a growing team of 50+ mobile engineers to deliver high-quality software safely, independently, and efficiently.

Our stack:
Core:
React Native, iOS (Swift), Android (Kotlin)
Architecture:
Monorepos, White-labeling, shared npm packages
CI/CD & Automation:
Bitrise, Expo (Future)
Observability & Testing:
Honeycomb, Maestro E2E

What you’ll do: The Recipe

  • Shape Architectural Direction: Shape the architectural direction and contribute to the execution of our brownfield-to-greenfield React Native migration within a white-labeled, multi-brand application ecosystem.
  • Scale Infrastructure for Growth: Design and evolve the long-term scalability and developer experience of the React Native monorepo, enabling seamless concurrent development for 50+ mobile engineers across multiple squads.
  • Future-Proof Shared Code: Maintain and scale the monorepo to host shared npm packages designed for future cross-platform code sharing with web repositories.
  • Champion CI/CD & Developer Experience: Maintain and optimize our current CI/CD pipelines in Bitrise while helping shape our future migration to Expo.
  • Elevate Quality & Observability: Enable product teams to make data-informed decisions by building robust tracing and dashboards in Honeycomb. Help establish and scale end-to-end testing frameworks across the organization using Maestro.
  • Drive Technical Alignment: Partner with Engineering Managers and Product stakeholders to review technical solutions, provide architectural guidance, and promote engineering best practices across squads.
  • Strengthen Application Health & Reliability: Lead technical efforts to improve application health and reliability by designing observability tooling, performance reporting, incident response practices, and operational guardrails that improve system stability.
  • Pragmatic Technical Governance: Facilitate architectural decision-making, choosing the appropriate level of documentation—from lightweight design proposals to formal RFCs and ADRs—based on the scope and impact of each initiative.

What you’ll bring: The Ingredients

  • React Native & Native Mobile Expertise: Deep, production-tested expertise in React Native, combined with strong knowledge of both iOS and Android. You understand React Native's internal mechanics, performance profiling, native code bridging, platform-specific features and constraints, as well as the respective app store release processes. You are comfortable working across the full mobile stack to build and scale enterprise-grade applications.
  • Agentic Engineering: Hands-on experience using AI coding agents (Claude Code, Cursor, Copilot) in production or near-production work. You think beyond prompts to context engineering—structuring specifications, tool configurations, and information flow so agents produce reliable output. You can decompose complex workflows across agentic components, identify unreliable outputs, and introduce the appropriate guardrails where needed.
  • Scale-Minded Developer Experience: Proven track record of managing and optimizing workflows, linting, caching, and build times for large engineering organizations (50+ developers).
  • Systems & Monorepo Thinker: Experience managing complex build configurations, white-label scaling, and monorepo architectures.
  • High Autonomy & Accountability: You are comfortable operating with a high degree of autonomy, making sound technical decisions in ambiguous situations, and supporting teams during complex production incidents.
  • Exceptional Cross-Squad Influence: You have a proven ability to influence technical direction across multiple engineering teams through expertise, communication, and collaboration.

Above all, we are looking for individuals who will
make HelloFresh better.
We believe there are many different ways of developing skills and we love diverse experiences! So even if you don’t “tick all the boxes” but think you’d thrive in this role, we would really like to learn more about you.

What we offer: The Toppings

  • Global collaboration at scale: Collaborate with experienced engineers and product partners across HelloTech’s international teams, in a culture of active knowledge sharing.
  • Technology with real-world impact: Build and operate modern systems at global scale, supporting 6+ millions of customers and complex supply chain operations.
  • Technical/Product/Design leadership: Drive best practices and influence architecture/design, quality, and ways of working in an autonomous, product-led setup.
  • End-to-end development/delivery: Drive decisions from problem definition to production, improving systems and enabling long-term scalability.
  • Access to workspace at Warsaw Centre Point. The hub offers modern facilities including showers, breakout zones, outdoor space, cycle parking, and refreshments (coffee, soft drinks, and fruit).

Are you the missing ingredient? If this sounds like a tasty opportunity, we’d be excited to hear from you. We aim to review your profile and respond within 5 business days.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Coming to this page

A resume for this role — and a ticket to the draw

We take the posting apart down to the real requirements and rewrite your resume against it — by asking, not inventing: no line appears without your confirmation. Sign in to get it first, and to enter the draw.

  • A resume for this exact role, not a universal one
  • Answers are kept: edit any one, not the whole conversation
  • All in your account — open it from any device

On the wheel

A discount on mentoring

Winners are drawn at random among entries with a confirmed email. The date and the full rules are on the draw page.

Draw rules

Data Engineer

Junior Analyst / Młodszy Analityk

Mercer

Warsaw

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Role description

(full time employment contract - umowa o pracę na pełen etat)
What can you expect?

  • Flexible working hours
  • Induction Day - introduction to Mercer's organizational culture
  • Senior colleague support during your first weeks of work
  • Casual dress code and integration events
  • Multilingual community with inclusive atmosphere
  • Comfortable office in Warsaw city center (Al. Jerozolimskie 98)

What is in it for you?

  • You will have a chance to gain experience in a truly international company
  • You will attend trainings with dedicated coach which will prepare you to your daily task
  • You will become familiar with Kanban boards and other LEAN methods

We will count on you to:

  • Assist with the development, testing, and implementation of data audits for the cleaning and processing of executive and long-term incentive survey data
  • Assist with peer review of executive survey data and long-term incentive valuations
  • Conduct research on a regular basis of organizations and their associated structure that will be used in the maintenance of tools for consistent organization data cleaning across surveys
  • Conduct research on executive compensation within specific organizations on an as needed basis
  • Handle client and consultant interactions regarding executive and long-term incentive data upon request
  • Assist with the production of products that pertain to executive and long-term incentive data
  • Provide analytical support for consulting projects with regard to ExecRem/LTI data

What you need to have:

  • Degree in finance, mathematics, statistics, business is preferred
  • Strong analytical skills
  • Fluent written and spoken English
  • Time management and project management skills

What makes you stand out:

  • Basic knowledge of financial mathematics and option pricing models (i.e. Black - Scholes)
  • Basic knowledge of executive compensation and/or long-term incentive data
  • Database management software skills

Why join our team:

  • We help you be your best through professional development opportunities, interesting work and supportive leaders
  • We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communities
  • Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being

If you are interested, please send your CV in English.
Marsh (NYSE: MRSH) is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $27 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information, visit marsh.com, or follow us on LinkedIn and X.

Marsh is committed to creating a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age, background, disability, ethnic origin, family duties, gender orientation or expression, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex/gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law.

Marsh is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one “anchor day” per week on which their full team will be together in person.

R_357200

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Data Engineer

Business Insights Analyst

EY

Katowice

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Role description

Location: Katowice - 2 days in office / 3 days remote

Let us introduce you the job offer by EY GDS Poland – a member of the global integrated service delivery center network by EY.

As a Senior in Technology Risk, you will be part of a high-performing, international team delivering IT audit and technology risk services to leading global clients.

The opportunity
CSS roles are created to provide tailored suite of services to consulting teams across competencies and regions within EY. Responsibilities include collaboration and service provision to Consulting leaders to manage their portfolio and practice operations more efficiently and effectively. The Business Insights Analyst works closely with business stakeholders to understand requirements, identify relevant information, and transform data into executive-ready insights and business stories. Responsibilities include supporting leadership decision-making through analysis, reporting, presentation development, and AI-enabled insight generation. The role requires collaboration with Consulting, Analytics, and AI teams to deliver high-quality business intelligence, reporting governance, and actionable recommendations. Strong analytical thinking, communication, storytelling, attention to detail, and stakeholder management skills are essential for success in this role.

Your Key Responsibilities

  • Understand business needs and stakeholder objectives.
  • Translate business questions into analytical use cases and solution concepts.
  • Identify and gather relevant data from multiple internal sources.
  • Collaborate with Analytics and AI teams to develop insight-driven solutions.
  • Create business briefings, executive summaries, and client insights.
  • Use GenAI-powered tools and dashboards to generate and maintain presentations and reports.
  • Transform complex data into clear, actionable business narratives.
  • Ensure quality, consistency, and governance of reporting outputs.

Skills And Attributes For Success

  • Strong business and analytical thinking.
  • Ability to connect information from multiple sources and identify meaningful insights.
  • Excellent communication and storytelling skills.
  • Ability to translate complex information into clear business messages.
  • Proactive, ownership-driven mindset.
  • Strong attention to detail.

To qualify for the role, you mut have

  • 2+ years of experience in business analysis, consulting, analytics, or a related field.
  • Experience gathering and interpreting business requirements.
  • Strong PowerPoint and presentation development skills.
  • Advanced skills in Excel and PowerBI.
  • Experience preparing executive-level materials.
  • Excellent English communication skills (C1/C2).

Ideally, you’ll also have

  • Experience with AI, GenAI, Copilot, or analytics solutions.
  • Knowledge of Azure, Fabric, or similar platforms.
  • Experience supporting client-facing teams, sales, or account management.

What We Offer
EY Global Delivery Services (GDS) is a dynamic and truly global delivery network. We work across nine locations – Argentina, Hungary, India, the Philippines, Poland, Sri Lanka, Mexico, Spain and the United Kingdom – and with teams from all EY service lines, geographies and sectors, playing a vital role in the delivery of the EY growth strategy. From accountants to coders to advisory consultants, we offer a wide variety of fulfilling career opportunities that span all business disciplines. In GDS, you will collaborate with EY teams on exciting projects and work with well-known brands from across the globe. We’ll introduce you to an ever-expanding ecosystem of people, learning, skills and insights that will stay with you throughout your career.

  • Continuous learning: You’ll develop the mindset and skills to navigate whatever comes next.
  • Success as defined by you: We’ll provide the tools and flexibility, so you can make a meaningful impact, your way.
  • Transformative leadership: We’ll give you the insights, coaching and confidence to be the leader the world needs.
  • Diverse and inclusive culture: You’ll be embraced for who you are and empowered to use your voice to help others find theirs.

About EY
EY | Building a better working world
EY exists to build a better working world, helping to create long-term value for clients, people and society and build trust in the capital markets.

Enabled by data and technology, diverse EY teams in over 150 countries provide trust through assurance and help clients grow, transform and operate.

Working across assurance, consulting, law, strategy, tax and transactions, EY teams ask better questions to find new answers for the complex issues facing our world today.

If you can demonstrate that you meet the criteria above, please contact us as soon as possible.
The Exceptional EY Experience. It’s Yours To Build.
In compliance with the requirements of the Whistleblower Protection Act, our company has established the
Procedure for reporting breaches of law and undertaking appropriate follow-up actions
. Any misconduct should be reported through the EY Ethics Hotline.

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Data Engineer

Lead Data Analyst with Power BI (f/m/x)

Sii Poland

Warsaw

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Role description

Do you want to create Data & Analytics solutions that truly support business decisions?

Join our Data & Analytics Competence Center and co-create modern analytical solutions based on Microsoft Power BI.

As a Lead Data Analyst (Power BI), you will bridge the business and technology worlds – engage in client conversations, translate business needs into analytical solutions, and support organizations in building a Data-Driven culture.

You will develop reporting standards and Data Governance, support the Power BI analyst team, and collaborate with DWH architects and data engineers in designing modern data platforms.

If you enjoy connecting business with technology, building client relationships, and having a real impact on the development of Data & Analytics solutions – this role is for you.

Your tasks

  • Collaborate with business stakeholders
  • Conduct workshops, analyze requirements, and translate business goals into analytical solutions and Power BI dashboards
  • Define reporting standards and best practices in Power BI and Data Governance
  • Work with data developers (ETL), data architects, and DevOps/FinOps in designing and implementing solutions based on Microsoft Fabric and Power BI
  • Act as a team leader – mentoring, developing skills, and providing substantive support to analysts
  • Oversee the quality, consistency, and usability of delivered analytical solutions
  • Monitor market trends in analytics
  • Co-create and develop the Data & Analytics Center's offerings
  • Represent the organization at industry conferences and actively participate in market events

Requirements

  • At least 7 years of experience in creating and developing Power BI analytics and working with data
  • Previous experience as a Tech Lead / Lead Developer / Senior Consultant
  • Knowledge of Data Governance principles, semantic modeling, and reporting best practices
  • Practical knowledge of DWH architecture, Data Lakehouse, cloud solutions, and Microsoft Fabric platform, supported by active participation in implementations or production projects
  • Advanced skills in SQL, Python, DAX
  • Commercial experience with Microsoft Fabric gained through implementation or development projects (experience in architecture design and recommending platform components is a plus)
  • Experience in project work with clients (requirements gathering, consulting, presentations)
  • Ability to make technological decisions and take responsibility for them
  • Strong communication and consulting skills
  • Experience in presales processes (concept preparation, offer support, estimations)
  • Ability to identify market trends in data analytics and apply them practically in building offerings and solutions for clients
  • Fluent communication in Polish and English

Nice to have

  • Active participation in the industry community (attending conferences, meetups, monitoring the market)
  • Use of AI in analytics automation
  • Knowledge of MS Fabric IQ and/or Copilot Studio

Job no. JOB-A4TZ3

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

  • Great Place to Work
  • Solid financial situation
  • Contracts with the biggest brands
  • Centre of internal trainings
  • Many experts you can learn from
  • Open and accessible management team
  • Profit sharing
  • Passion Sponsorship program
  • Regular integration events and trips
  • Comfortable and well-equipped offices
  • MySii app
  • Medical care

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

Data Engineer

Senior Risk Data & Analytics Coordinator

Aon

Krakow

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Role description

Senior Risk Engineering Analyst
Aon is in the business of better decisions
At Aon, we shape decisions for the better to protect and enrich the lives of people around the world.

As an organization, we are united through trust as one inclusive team and we are passionate about helping our colleagues and clients succeed.

What The Day Will Look Like

  • System Ownership & Technical Administration: Oversee d‑Risk system maintenance (patches, upgrades, version control, stability) and conduct UAT for new releases. Configure workflows, forms, notifications, and automation. Monitor performance, uptime, data integrity, drive optimization and digitalization, and ensure SLA compliance with the vendor.
  • User Management & Vendor Collaboration : Act as the main liaison with the US‑based d‑Risk vendor. Manage the full user lifecycle (accounts, roles, permissions, deactivation) and support onboarding, training, and adoption for ~100 users across 12 EMEA countries. Provide daily technical support, gather user feedback, and lead change management for new releases and features.
  • Reporting, Dashboards & Analytics: Produce and customize risk reports, dashboards, data extracts, and management insights. Deliver client‑ready reporting supporting Risk Control Engineering and ensure consistency and data accuracy across EMEA.
  • Documentation System & Process Governance: Ensure effective use of the d‑Risk documentation system across EMEA. Support risk surveys, templates, documentation standards, follow‑up of risk recommendations, and maintain high data quality in cooperation with the ABS client data team.
  • Asset Valuation & Project Tracking: Support Asset Valuation by coordinating third‑party proposals, tracking project delivery, logging completed projects, and ensuring compliance with quality and documentation requirements.
  • Financial & Supplier Coordination: Manage EMEA invoicing and internal off‑charging. Coordinate with supplier contract holders to ensure proper vendor and contract management.

Skills And Experience That Will Lead To Success

  • Strong affinity for digitalization, applications, and data‑driven workflows.
  • Experience in system administration, workflow configuration, and change management preferred.
  • High attention to detail and a commitment to accurate, high‑quality delivery.
  • Excellent communication skills; outgoing and capable of building a strong, cross‑regional network across Europe.
  • Ability to conduct training sessions for diverse user groups.
  • Strong client‑service mindset, proactive, and solution‑oriented.
  • Fluent in English (spoken and written).

How We Support Our Colleagues
In addition to our comprehensive benefits package, we encourage an inclusive workforce. Plus, our agile environment allows you to manage your wellbeing and work/life balance, ensuring you can be your best self at Aon. Furthermore, all colleagues enjoy two “Global Wellbeing Days” each year, encouraging you to take time to focus on yourself. We offer a variety of working style solutions for our colleagues as well.

Our continuous learning culture inspires and equips you to learn, share and grow, helping you achieve your fullest potential. As a result, at Aon, you are more connected, more relevant, and more valued.

Aon values an innovative and inclusive workplace where all colleagues feel empowered to be their authentic selves. Aon is proud to be an equal opportunity workplace.

Aon provides equal employment opportunities to all employees and applicants for employment without regard to race, color, religion, creed, sex, sexual orientation, gender identity, national origin, age, disability, veteran, marital, domestic partner status, or other legally protected status.

We are committed to providing equal employment opportunities and fostering an inclusive workplace. If you require accommodations during the application or interview process, please let us know. You can request accommodations by emailing us at ReasonableAccommodations@Aon.com or your recruiter. We will work with you to meet your needs and ensure a fair and equitable experience.

#commercialriskandreinsurancesolutions

2577884

This is a saved copy of a posting published elsewhere. Postings get taken down without notice — check the employer's site before applying. mentors.coach is not the hiring party.

491 more openings in this category and country

Mobile Staff Engineer, Platform/Infrastructure (all genders)HelloFresh · Poland

Apply on the employer's site