Senior Data Engineer

FTSE Russell, part of the London Stock Exchange Group, is an essential index partner for a changing world, providing category defining indices across asset classes and investment objectives to create new possibilities for the global investment community. FTSE Russell’s expertise and products are used extensively by institutional and retail investors globally.
In this key role, you will work on development a new Data Platform across the Engineering organisation. The main goal of this position is to give to make our
Data Platform better
Key accountabilities:
• Provides mentorship and technical guidance to team members, sharing best practices and helping less experienced engineers develop their skills.
• Builds a collaborative, supportive environment that promotes learning, growth, and shared success.
• Creates scalable, reliable software architec tures that meet both technical and commercial requirements.
• Adapts solutions to project-specific needs, applies standard processes, and identifies when patterns are appropriate or should be avoided.
• Decomposes complex systems into manageable components, designing scalable solutions that align with business requirements and long-term product vision.
• Brings a logical, data-driven approach to diagnosing and resolving technical challenges, ensuring that projects stay on track and meet quality standards. Skilled at anticipating potential issues and developing proactive solutions that minimise risks.
• Designs solutions that ensure compatibility with existing platforms, enhancing overall functionality and user experience.
• Ensures that documentation supports knowledge sharing and compliance, making it accessible and valuable for future reference.
• Demonstrates an adaptive attitude, actively seeking new tools, frameworks, and methodologies that enhance efficiency and product capabilities. Encourages a culture of innovation within the team, promoting creative solutions to complex technical challenges.
• Demonstrates in-depth technical knowledge and serves as a domain authority in one or more key technologies. Provides guidance on standard processes in design, development, and implementation, ensuring solutions meet business requirements and technical standards.
• Acts as a point of contact within their technical domain, demonstrating significant depth of knowledge.
• Utilises existing design patterns to develop reliable solutions, while also recognising when to adapt or avoid patterns to prevent anti-patterns.
Requirements
Min 3 years experience Pyspark and Python and familiarity with a variety of development technologies with emphasis on ELT.
• Significant experience in solution a rchitecture and technical design,
• Proven experience in data modelling and database design .
• Knowledge of industry standard processes in data management.
• Proficient in quality assurance practices, including code reviews, automated testing, and best practices for software testing.
• Bachelor’s degree or equivalent experience in Computer Science, Software Engineering, or a related field is essential.
• Problem Solving and Analytical Thinking:
• Innovative Thinking and Adaptability:
Bonus skills

• Knowledgeable in integrating diverse systems and technologies, enabling seamless interaction across our technical environment.
• Experienced in implementing and optimising CI/CD pipelines, including the use of automation tools to streamline development, testing, and deployment. Skilled at setting up processes that enable rapid, reliable re leases, minimising manual effort and supporting agile development cycles.
• A master’s degree or equivalent experience or relevant certifications (e.g., Certified Software Development Professional, AWS Certified Solutions Architect) is advantageous, demonstrating a commitment to technical excellence and professional development.
YOUR PACKAGE WHEN JOINING GDYNIA TEAM:

Bonus: bonus plan assigned to every position
Wellbeing : monthly wellness and work-from-home allowance, and employee assistance program
Lunch card : meal allowance on personal lunch card provided monthly
Healthcare : private medical care with Medicover, premium package fully covered by employer and life insurance with Generali
Future : corporate pension plan supported by Fidelity International offering additional 5% of base salary to invest in selected funds, and LSEG Employee Share Purchase plan available
Reward and Recognition : additional awards and vouchers available for extra achievements
Referral : Bonus between 8,000 to 10,000 PLN for successful recommendation of a new colleague
Development : E-learning platforms access with a range of training and certified courses
LSEG Products : availability to access to real-time economic data through our flagship Workspace platform
Diversity : Inclusive culture built by colleagues from over 40 countries representing various age, gender, race, and beliefs
Charity : 2 additional days off for voluntary jobs
Office : brand new, sustainable office with cafeteria and chillout space. Location 3T Office, Gdynia is less than 200m to PKM station and a walking distance to SKM station. Underground car park with 122 spaces for LSEG employees
Activities : sport teams and social events to join e.g. weekly yoga classes in the office
Company events : Annual   Summer and Winter Parties for colleagues and Family Day for employees with partners and children

Proud to share LSEG in Poland is Great Place to Work certified (Feb ’24 – Feb ’25).
Learn more about life and purpose of our company directly from the Gdynia colleagues’ video:

We believe that creating a diverse and inclusive organisation is fundamental to the way we deliver on our promise of creating essential partnerships and open opportunities. Our open culture is central to how we deliver our purpose - driving financial stability, empowering economies and enabling customers to create sustainable growth - in everything we do.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 70 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.

We offer a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone's race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as any mental health or physical disability needs.

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If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to us are aware of this privacy notice.