Senior Software Engineer

Job Locations RO-Bucharest
Posted Date 4 hours ago(15/01/2026 14:55)
Job ID
2026-3369
# of Openings
1
Position Class
Employee
Position Type
Full time
Org Level 2
Product Engineering

Who we are

Join the fintech revolution with Mambu, the leading SaaS cloud banking platform. We're on a mission to make banking better for a billion people. Explore exciting career opportunities and help shape the future of financial services. Learn more here.

What you’ll do

As part of our Daily Banking area, you will join one of the 4 Deposits squads, a high-performance team of 5-6 engineers (including a Staff Engineer, Seniors, and Mid-level devs). We are responsible for the core engine that handles deposit accounts, meaning you will work on mission-critical features where performance, precision, and scalability are paramount.

 

We value freedom to implement and high autonomy. While we have a structured onboarding process, including a dedicated buddy and a month of deep-dive exercises into our business logic, we expect you to bring a proactive mindset from day one.

 

You will:

  • Build and maintain scalable Java applications focused on complex financial calculations and high-performance deposit processing.

  • Don’t just implement tasks; take initiative. Identify architectural bottlenecks and propose modern, resilient solutions.

  • Translate business requirements into robust technical designs, working closely with your squad to ensure high-quality delivery.

  • Conduct rigorous code reviews and champion best practices in TDD and automated testing.

  • Debug complex issues and participate in on-call rotations to ensure the reliability of our global lending and deposit platform.

What you’ll bring

  • 5+ years (minimum 3 professional) of experience in Java development, with a deep understanding of the ecosystem.

  • Proven ability to design scalable, resilient systems. You don’t just write code; you think about how it fits into the entire ecosystem.

  • Strong experience with JUnit, Mockito, and TDD. You believe that a feature isn't "done" until it's fully tested.

  • Solid experience with MySQL or other relational databases, specifically focused on performance tuning for high-volume transactions.

  • High level of initiative and adaptability. You are comfortable working independently and mentoring mid-level engineers.

 

What you’ll get

Join us to shape the future of banking, where your professional growth is equally as valued as your personal well-being.

 

  • Competitive base salary
  • Company equity for all
  • Learning and development opportunities
  • Hybrid/Remote working (location dependant)
  • 30 day working abroad
  • 4 week paid sabbatical after 5 years service
  • Additional benefits based on location

Let's connect!

Follow Mambu on LinkedIn for the latest Fintech trends and success stories. Connect with us on Facebook, Instagram, and YouTube to experience our vibrant culture. Explore our mission, values, and the world we're building at mambu.com/careers. Check out our Insights Hub for industry insights, Mambu blogs, webinars, and upcoming events.

 

As part of the recruitment (or HR onboarding) process, you will be required to obtain authorized criminal background and credit screening results, as well as be queried against a sanctions/anti-money-laundering/counter terrorism financing/politically exposed persons screening service and your employment is conditional upon approval of these results.

 

At Mambu, we encourage all interested candidates to apply, even if they don't meet every listed qualification, as we value diversity and recognize that experience doesn't always perfectly align with job descriptions. We are committed to providing equal opportunities for applicants with disabilities; if you need assistance during the application process, please contact talent.acquisition@mambu.com.

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