About this role
We are looking for a Senior Backend Developer/Engineer to join the team behind Charisma and take a leading role in building, scaling, and stabilizing a solution that supports complex operational and rollout processes.
You will work on backend services at the core of the solution, leading complex technical topics around microservices, integrations, data, performance, security, and system reliability. This is a senior hands-on engineering role where you will shape technical decisions, improve existing production services, and guide how new functionality is designed, delivered, and operated.
You will be part of an agile delivery environment where backend, frontend, quality, and business experts work together to turn real business requirements into reliable software. As a senior team member, you will also collaborate closely with customers, stakeholders, architects, and delivery leads to clarify needs, propose solutions, manage technical expectations, and ensure the solution brings measurable business value.
WHAT WILL YOU DO?
Lead the design, development, and continuous improvement of backend services using Java 17+ and Spring BootDefine and evolve microservices and REST APIs used by the Charisma solution, ensuring scalability, maintainability, security, and operational reliabilityTranslate complex business and customer requirements into robust, maintainable, and scalable technical solutionsDrive performance optimization, technical stabilization, and root-cause analysis of production servicesDesign data models and lead work with PostgreSQL, SQL optimization, database migrations, and data consistency topicsApply and promote engineering approaches such as Domain-Driven Design, Event-Driven Architecture, Clean Architecture, and established design patternsDesign, review, and document APIs using OpenAPI / Swagger, ensuring they meet integration and stakeholder needsLead and support integrations using REST and TARDIS, including troubleshooting and technical alignment with consuming systemsDefine and improve automated unit, integration, API, performance, and load testing strategiesWork with Docker, Kubernetes, Git, and CI/CD to improve development, deployment, and operational practicesImprove application observability and troubleshooting using Prometheus, Grafana, LUMINA, OpenTelemetry, and loggingCollaborate with frontend engineers, quality engineers, business experts, customers, and stakeholders to deliver end-to-end functionalityProvide technical guidance, code reviews, mentoring, and support to other engineers working on the same projectContribute to rollout activities, technical planning, risk identification, and continuous improvement of the overall solution YOU WILL SUCCEED IF YOU:
have:
Extensive hands-on experience with Java 17+, Spring Boot, and the Spring Framework, including production-grade enterprise applicationsStrong experience designing, developing, and operating microservices and REST APIs in complex system landscapesAdvanced knowledge of PostgreSQL, SQL, data modeling, performance tuning, and database migration strategiesDeep experience with Spring Data JPA, Hibernate, Spring Security, Spring Web, and Spring ValidationStrong understanding of modern software architecture and engineering principles, including DDD, Event-Driven Architecture, Clean Architecture, design patterns, and API design best practicesExperience making technical design decisions and explaining trade-offs to engineers, architects, customers, and non-technical stakeholdersExperience with Maven or Gradle and strong understanding of build, dependency, and release managementStrong experience with automated testing using technologies such as JUnit 5, Mockito, Testcontainers, and API testing toolsProven experience with performance and load testing of large-scale applications, including analysis and remediation of bottlenecksPractical production experience with Git, Docker, Kubernetes, and CI/CDStrong understanding of observability, monitoring, logging, alerting, and production troubleshootingExperience working with REST-based integrations and TARDISExcellent communication skills and proven ability to work directly with customers, stakeholders, architects, delivery leads, and cross-functional teamsAbility to mentor developers, perform high-quality code reviews, and promote engineering standards within the teamAnd you speak English (min. B2 level).Nice to Have:
Experience with AWS and cloud-native application designKnowledge of KotlinExperience with Reactive Programming / WebFluxKnowledge of route optimization technologiesExperience leading technical workshops, solution reviews, or customer-facing technical discussionsExperience with architectural documentation, technical roadmaps, and production readiness reviews WHY SHOULD YOU CHOOSE US?
We believe in balance between work and personal life. An attractive and extensive work-life balance portfolio guarantees lasting motivation for employees and thus a better quality of life, promotes physical and mental well-being and contributes to a positive work environment. All this with the aim of providing more freedom in reconciling work, career growth, private life and individual lifestyle. Therefore we offer to our employees over 25 different benefits to improve their personal and professional life in these areas:
Financial benefitsBenefits with focus on learning and developmentBenefits with focus on health and sportBenefits with focus on family and work – life balanceOther benefitsFor more information about our benefits click to Benefits
Salary
Final salary is negotiable.
We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than 3100€ /brutto.
Additional information
* Please be informed that our remote working possibility is only available within Slovakia due to European taxation regulation.