Junior Frontend Engineer (React)

Technologies we use

Expected

• JavaScript
• TypeScript
• React.js

About the project

You will join a team responsible for part of our advertising ecosystem - covering high-impact display ads as well as privacy and user consent management modules (CMP/GDPR). We are looking for an engineer who not only writes clean code but also wants to help build a product that reaches millions of users.

Our team values autonomy, mutual support, a dedicated buddy onboarding system, and openness to new ideas.

Important things for you:

The salary range for this position depending on the skill set is as follows (contract of employment, tax-deductible cost):

- PLN 11 200 - 15 250

- Annual bonus based on your annual performance and company results.

Our team is based in Warsaw.

Your responsibilities

• Hands-on ownership: Participating in the whole delivery process — from refining ideas and implementation to production deployment and monitoring your changes live.
• Learning architectural patterns: Actively participating in discussions and absorbing best practices.
• Cross-functional collaboration: Working closely with UX designers, data analysts, business partners, and other engineering teams to turn complex ideas into seamless user experiences.
• Ensuring quality and engineering standards: Participating in code reviews, sharing knowledge, and continuously improving our technical stack and developer workflows.

Our requirements

• Technical skills: Strong proficiency in JavaScript (ES6+), TypeScript, React and AI-driven development. Openness to developing backend skills.
• Mindset and initiative: A proactive, ownership-driven approach - initiating technical discussions and seeking solutions rather than simply executing pre-defined specifications.
• Commercial experience: Commercial experience as a Software Engineer building complex, high-traffic web applications.
• Language proficiency: Fluency in Polish (C1) and English (B2) for effective written and spoken communication with team members and internal stakeholders
• Nice-to-have: Experience or interest in the AdTech domain or web privacy standards (GDPR, CMP/consent management).

What we offer

• Flexible working hours in the hybrid model (4/1) - working hours start between 7:00 a.m. and 10:00 a.m. We also have 30 days of occasional remote work.
• Annual bonus based on your annual performance and company results.
• Well-located offices (with e.g. fully equipped kitchens, bicycle parking, terraces full of greenery) and excellent work tools (e.g., raised desks, ergonomic chairs, interactive conference rooms).
• A 16" or 14" MacBook Pro or corresponding Dell with Windows (if you don't like Macs) and all the necessary accessories.
• A wide selection of fringe benefits in a cafeteria plan - you choose what you like (e.g., medical, sports or lunch packages, insurance, purchase vouchers).
• English classes that we pay for related to the specific nature of your job.
• A training budget, inter-team tourism, hackathons, and an internal learning platform where you will find multiple trainings.
• An additional day off for volunteering, which you can use alone, with a team, or with a larger group of people connected by a common goal.
• Social events for Allegro people - Spin Kilometers, Family Day, Fat Thursday, Advent of Code, and many other occasions we enjoy.

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• sharing the costs of professional training & courses
• life insurance
• flexible working time
• integration events
• no dress code
• leisure zone
• extra social benefits

#goodtobehere means that:

• You will join a team you can count on - we work with top-class specialists who have knowledge- and experience-sharing in their DNA.
• You will love our level of autonomy in team organization, the space for continuous development, and the opportunity to try new things.
• You get to choose which technology solves the problem and you are responsible for what you create.
• You will value our Developer Experience and the full platform of tools and technologies that make creating software easier. We rely on an internal ecosystem based on self-service and widely used tools such as Kubernetes, Docker, Consul, GitHub, and GitHub Actions. Thanks to this, you can contribute to Allegro from your very first days on the job.
• You will be equipped with modern AI tools to automate repetitive tasks, allowing you to focus on developing new services and refining existing ones (also leveraging AI support).
• You will create solutions that will be used (and loved!) by your friends, family and millions of our customers.
• You will meet the Allegro Scale, which starts with over 1000 microservices, an open-source data bus (Hermes) with 300K+ rps, a Service Mesh with 1M+ rps, tens of petabytes of data, and production-used machine learning.
• You will become part of Allegro Tech - We speak at industry conferences, cooperate with tech communities, run our own blog (it's been over 10 years!), record podcasts, lead guilds, and we organize our own internal conference - the Allegro Tech Meeting. We create solutions we love (and can) to talk about!