Junior Software Engineer Java - Paris - Mirakl - Labs

Description

Mirakl is the leading provider of eCommerce software solutions. Mirakl's suite of solutions provides enterprises with a transformative way to drive significant growth and efficiency in their online business.

Since 2012, Mirakl has been pioneering the platform economy, empowering retail and b2b enterprises with the most advanced, secure and scalable technology to digitize and expand product assortment through marketplace and dropship, improve efficiency in supplier catalog management and payments, personalize shopping experiences, and boost profits through retail media.

In July 2025, Mirakl launched Mirakl Nexus, the first neutral infrastructure designed for agentic commerce. Built on Mirakl's 13 years of expertise and innovation, and powered by an ecosystem of more than 100,000 sellers, Mirakl Nexus connects merchants and AI agents to automate product discovery, payments, and after‑sales service.

→ Our teams work together daily to develop the roadmap for our SaaS solutions while addressing the issues faced by our customers and users, tackling a range of challenges related to new features, scalability, security, and usability.

Mirakl in Numbers

• Founded in 2012 | Member of French Tech Next40
• 750+ employees in 9 offices worldwide: Paris, Barcelona, Bordeaux, Boston, London, Munich, New York, Sydney, Tokyo
• 350+ Mirakl Tech teams members mainly based in France

Our Values

Working at Mirakl means accelerating your career alongside ambitious, passionate, and supportive colleagues. We're proud of the diversity of backgrounds, perspectives, and experiences that make our teams unique.

Our 5 values guide how we collaborate:

Work Hard Together: Teamwork and collaboration are the foundation of our success

Get Things Done: We prioritize action and efficiency for impactful results

Go Above & Beyond: We tackle challenges proactively and always aim for excellence

Succeed Through Expertise: Knowledge sharing and continuous learning are core to our culture

Satisfy & Empower Clients: We're committed to our clients' success

Your role

As a Junior Software Engineer Java in the Mirakl Labs product teams, your main mission is to design, develop and deploy new business features proposed by the Product Manager. On a daily basis, you will be implementing these new features across all layers of our applications, from interfaces (UI or REST API) through the business layer to the creation of database schemas and scripts. As part of a team with total ownership over the products it develops, you are a key player in ensuring both the business consistency of the product and its technical stability.

The position is a permanent contract, based in Paris.

95% of our tech teams are based in France and 99% speak French.

Day‑to‑day activities

• Participate in design meetings with the team (5 developers), Product Manager, and UX/UI teams
• Participate in technical decisions
• Develop, test, and deploy to production (continuous delivery)
• Conduct code reviews and pair programming
• Participate in reviews and RFCs (Request for Comments)
• Monitor and debug production issues (you build it, you run it)
• Participate in daily Stand‑ups, Sprint Reviews and retrospectives
• Participate quarterly in developing the next labs roadmap
• Contribute to the continuous improvement of development practices
• Follow up on developed features: business cycle of the feature, adoption rate

Our tech stack

• Java 21 (with planned migration to 25)
• Spring Boot
• Kafka
• React/Redux
• PostgreSQL
• Elasticsearch
• Go
• Docker
• Kubernetes
• AWS
• Google Cloud

You'll love this job if

• You have up to 2 years of experience with Java and Spring (including internships and apprenticeships), and some exposure to web challenges and distributed architectures.
• You ideally have experience with microservices architectures and high‑load systems
• You love clean, quality code
• You want to participate in technical decisions
• You want to work in a dynamic, challenging and enriching environment
• You want to learn and perfect your skills
• You speak professional English and are fluent in French

Dive into daily life at Mirakl Labs with Pauline, Java Engineering Manager, who offers a glimpse into team life and our tech culture here

Meet Nelson, Director of Engineering, who shares his vision on Mirakl's growth, technical challenges, and what makes our work environment unique here

Our recruitment process

30 minutes with someone from the recruitment team to discuss your key projects, ask some tech questions, and present the position in detail

45 minutes on Zoom with an experienced developer to discuss our technical stack and assess your knowledge

1 hour with the Manager of the relevant squad for a business discussion

2 x 45 minutes or 1 hour STAR interview to assess your alignment with our values

We welcome collaborators with their diverse perspectives and experiences to power us forward. These often far exceed conventional job requirements and help us create a culture of continuous learning. If you're ready to join a global leader powering digital transformation for 450+ of the world's most innovative retailers and B2B organizations.

We may use Artificial Intelligence (AI) solutions to help streamline our hiring process, including screening applications, analyzing resumes, and assessing responses. While AI helps us work efficiently, all final hiring decisions are made by humans. For more information, visit our AI Guidelines for Candidates and Interviews

Mirakl handles personal data during your recruitment processes. Mirakl is the controller of the personal data, meaning it decides how and why the data is processed. Mirakl takes strong commitment to protecting applicant data and ensuring compliance with privacy regulations during the recruitment process, in particular:

• Types of Data Processed: Mirakl collects data such as name, contact details, educational and employment history, and other relevant information provided during the application process.
• Purpose of Data Use: The data is used to manage and process applications, communicate with candidates and, upon successful application, to onboard the individual.
• Data Access and Sharing: Access to personal data is generally restricted within Mirakl and its affiliates, though some third‑party providers might have access to carry out specific functions like reference checks and payroll processing.
• Data Retention: Personal data is retained only as long as necessary for the recruitment process or to comply with legal obligations, typically up to two years from the last contact.
• Rights of Individuals: Candidates have rights regarding their data, including access, data portability, correction, restriction of processing, and in certain cases, deletion. In addition, they may lodge a complaint with an EU supervisory authority.
• Queries and complaints: If you have any questions or wish to exercise your rights, you may fill in this form or directly contact us by sending an email to