Senior Back-End Software Engineer

Posted 2 Days Ago
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Vilnius, Vilniaus miesto savivaldybė, Vilniaus apskritis, LTU
In-Office
58K-58K Annually
Senior level
Fintech • Payments • Software • Financial Services
The Role
Lead the design and delivery of secure, scalable fintech products using Java or Kotlin. Develop tested backend components for payments and compliance systems, make architectural decisions around microservices and event-driven systems, improve performance and resilience, review code, establish engineering standards, and mentor engineers. Collaborate with product and analytics teams, use AI development tools, and contribute to the long-term evolution of the platform.
Summary Generated by Built In

Inventi is a financial application development company specializing in the financial sector. We offer innovative products like Payment Gateway, Regulatory Reporting Connector and Verification of Payee (VoP), alongside tailored services, using cutting-edge technology to keep customers ahead. 

We are looking for a Senior Back-End Software Engineer (Java/Kotlin) who is ready to lead the design and delivery of reliable, scalable, and secure fintech products. You'll join a cross-functional squad, where engineers, product managers, and analytics work closely together to deliver real value to our customers. You'll be writing production-ready code in the JVM ecosystem, driving technical decisions, and shaping the long-term evolution of Inventi's platforms.

The role:

  • Develop and maintain core components of our payments and compliance products.
  • Write clean, tested, and well-structured code that directly impacts how businesses operate.
  • Collaborate with your product team to design, implement, and release new features.
  • Lead technical decisions within your squad: own solution design, set engineering standards, review code, and mentor other engineers.
  • Drive architectural decisions on microservices, event-driven systems, and scalability.
  • Continuously improve existing systems, ensuring performance, resilience, and security.
  • Use AI as part of your daily work. AI is already embedded in how we build, and we're looking for someone keen to use it and help us get even more out of it.

What you bring:

  • 5+ years of experience in JVM languages (Java, Kotlin, or similar).
  • Hands-on experience with Spring/Spring Boot, Maven, RDBMS & SQL, Git.
  • A passion for clean code, testing, and modern development practices like SOLID, design patterns, etc.
  • Solid experience with containerization (Docker), distributed systems and event-driven architecture.
  • A track record of making and defending technical decisions, and of helping other engineers grow.
  • Experience using AI tools in your development workflow
  • Bonus points for experience with Kafka, Kubernetes or Google Cloud.
  • Curiosity and a proactive mindset: you don’t just write code, you want to understand the product impact behind it.

Our offer:

  • Real impact in a fast growing fintech.
  • Continuous learning: access to courses, conferences, and books.
  • Team culture: events, sports challenges, team-building.
  • Flexible & remote work: enjoy flexible hours and remote work options.
  • Private health insurance and optional 3rd pillar pension contributions.
  • Little perks that make a difference: pet-friendly office, snacks, and a lot of ways to take a break - from board to digital.
  • Competitive gross salary starting from 4800 Eur per month (depending on your experience).

🔓 Unlock your value. Lead decisions, challenge ideas, and power the infrastructure of modern finance.

Skills Required

  • 5+ years of experience with JVM languages such as Java or Kotlin
  • Hands-on experience with Spring or Spring Boot
  • Experience with Maven
  • Experience with relational databases and SQL
  • Experience with Git
  • Knowledge of clean code, testing, SOLID principles, and design patterns
  • Experience with Docker and containerization
  • Experience with distributed systems and event-driven architecture
  • Track record of making and defending technical decisions
  • Experience helping other engineers grow
  • Experience using AI tools in development workflows
  • Experience with Kafka
  • Experience with Kubernetes
  • Experience with Google Cloud
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The Company
35 Employees
Year Founded: 2011

What We Do

Inventi builds payment and regulatory infrastructure for licensed financial entities across Europe. Its fully managed Payment Gateway SaaS connects electronic money institutions, payment institutions, and banks to regulated payment rails, including SEPA, SWIFT, and TARGET2, through a single integration. The company also offers Verification of Payee, regulatory reporting, PLAIS connector, and core ledger software, helping clients launch and operate payment capabilities quickly and reliably.

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