Senior Full Stack MERN Developer @MMCTech

We are seeking a talented
Full Stack MERN Developer
to join us in
Cluj-Napoca, Romania
at our EMEA Technology Hub. This is a hybrid role that has a requirement of working at least three days a week in the office. The successful candidate will oversee development of features for our Fine-Grain Authorization System. This system is vital for ensuring precise access control and security across our platform. The ideal candidate will possess strong leadership capabilities, deep expertise in full-stack development, and a focus on building scalable, secure, and user-friendly solutions deployed in a cloud environment.

We will count on you to

• Lead the end-to-end development of the Fine-Grain Authorization System feature set, including both backend and frontend components.
• Design and implement scalable, maintainable, and secure Restful API's using and MongoDB.
• Develop and optimize intuitive, responsive user interfaces with React ), ensuring a seamless user experience.
• Collaborate with product managers, security teams, and stakeholders to gather requirements and translate them into technical solutions.
• Design and implement fine-grain access control mechanisms (RBAC, ABAC) integrated into both backend and frontend.
• Oversee cloud deployment strategies, including CI/CD pipelines, containerization (Docker, Kubernetes), and infrastructure as code.
• Mentor and lead a cross-functional team of developers, fostering best practices in full-stack development.
• Conduct code reviews, enforce coding standards, and ensure high-quality, secure, and performant code.
• Monitor system performance, troubleshoot issues, and implement continuous improvements.
• Stay current with the latest trends in full-stack development, security, and cloud technologies.
• Document architecture, technical decisions, and development processes.

What You Need To Have

• Excellent communication both in English and Romanian
• Proven experience leading full-stack development teams in building complex applications.
• Strong proficiency in JavaScript/TypeScript, with expertise in React for frontend development.
• Extensive experience with and for backend services.
• Hands-on experience with API development, integration, and deployment.
• Deep understanding of MongoDB, including schema design, indexing, and performance optimization.
• Familiarity with cloud platforms such as AWS, Azure, or GCP, including deployment and scaling.
• Knowledge of containerization (Docker, Kubernetes) and CI/CD pipelines.
• Strong understanding of security best practices, including authentication, authorization, encryption, and secure coding.

Leadership & Soft Skills

• Excellent communication, collaboration, and stakeholder management skills.
• Proven ability to lead, mentor, and motivate a diverse development team.
• Strong problem-solving, analytical, and decision-making skills.
• Ability to thrive in an agile, fast-paced environment.

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.
• An opportunity to work in a fast-growing, innovative company with lots of room for progression and career growth;
• A fail-friendly environment that encourages learning and initiative;
• A yearly budget and the opportunity to build your flexible benefits package (up to 20% of your annual salary);
• 30+ days off (25 legal days off , 1 extra day off on your birthday, public holiday replacement days, extra buy/sell from your benefits budget);
• Performance Bonus scheme
• Matching charity contributions, charity days off, and the Pay it Forward charity challenge;
• Core benefits - Pension, Life and Medical Insurance, Meal Vouchers, Travel Insurance;
• We champion flexible working, and our mission is to help you find YOUR work-life balance, whether that's standard working, flex-time working, or working from home

Marsh McLennan (NYSE: MMC) is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman. With annual revenue of $24 billion and more than 90,000 colleagues, Marsh McLennan helps build the confidence to thrive through the power of perspective. For more information, visit , or follow on LinkedIn and X.

Marsh McLennan 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 McLennan 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 McLennan 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.

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