Frontend Developer

Sorry, this job was removed at 12:24 a.m. (CST) on Thursday, Aug 14, 2025
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Gdynia, Pomorskie
In-Office
Fintech • Analytics
The Role

Responsibilities:

  • Develop and maintain backend-for-frontend to offload logics from frontend

  • Collaborate with designers and backend developers to implement new features.

  • Optimize performance and improve user experience.

  • Write clean, maintainable, and testable code.

  • Participate in code reviews and application architecture discussions.

Requirements:

  • Min 3 years experience in development specific software backend-for-frontend

  • Knowledge of HTML, CSS, JavaScript.

  • Experience with modern frameworks (React, Angular, or Vue.js).

  • Experience with version control systems (Git).

  • Ability to work in a team and good communication skills.

  • English proficiency for reading technical documentation.

Nice to Have:

  • Knowledge of build tools (Webpack, Gulp).

  • TypeScript knowledge

  • Experience with RESTful API.

  • Knowledge and experience with Node.js.

  • Experience with cloud platforms (Azure/AWS).

OUR PACKAGE WHEN JOINING GDYNIA TEAM:

  • Bonus: bonus plan assigned to every position

  • Wellbeing: monthly wellness and work-from-home allowance, and employee assistance program

  • 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: https://www.lseg.com/en/careers/where-we-work/gdynia-poland 

Follow us on Facebook, Carers at LSEG Gdynia

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 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.

LSEG offers 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 mental health or physical disability needs.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

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

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The Company
HQ: London
15,967 Employees

What We Do

LSEG (London Stock Exchange Group) is a diversified international markets infrastructure business —earning our clients’ trust for over 300 years. That legacy of customer-focused excellence ensures that you can rely on our expertise in capital formation, intellectual property and risk and balance sheet management.

As global leaders in financial indexing, benchmarking and analytic services, we offer unrivalled access to international capital markets. Our high-performance technology solutions enable companies worldwide to access funds for growth and development. And with our Data & Analytics, Capital Markets and Post Trade divisions, we provide a comprehensive, integrated suite of trusted financial market infrastructure services that help our customers pursue—and achieve—their ambitions.

You can count on our open access model for unparalleled partnership, flexibility, stability, and support across all of our businesses. That’s how we make a difference— ensuring people can meet their potential—worldwide.

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