Back End Software Engineer (Kotlin)

Grow your career as a Back End Software Engineer at Solstice Analytics—where technical depth meets opportunity. Build forward-thinking solutions, collaborate with innovators, and stretch your expertise. Why Join Solstice Analytics We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks. From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next. What powers it all? Our people are ambitious, collaborative, and constantly evolving. About the Client An international transportation technology company focused on building scalable digital solutions for modern rail operations. The organization develops internal platforms and automation tools that improve operational efficiency, support business growth, and streamline complex processes in a fast-paced environment. Project Tech Stack Kotlin, Spring Boot, Akka/Pekko, PostgreSQL, Kafka, Event Sourcing, CQRS, AWS, Kubernetes (K8s), Docker, Microservices, RESTful APIs What You’ll Do Develop and maintain backend microservices for e-commerce platforms Work in a cross-functional, self-organized Agile team Analyze and drive technical improvements Ensure high engineering quality through testing and code reviews Take ownership of features end-to-end, from design to production Contribute to the continuous improvement of existing systems Use modern development tools and AI-assisted engineering solutions responsibly What You Bring Proven experience building backend systems with Kotlin Experience with Spring Boot and microservices architecture Good understanding of OOP and Software Design Patterns Experience with PostgreSQL or other relational databases Knowledge of testing principles and engineering best practices Familiarity with CI/CD pipelines and production deployments Strong communication skills in English Nice to have Experience with Akka/Pekko Experience with Java Experience with Docker and Kubernetes Knowledge of Kafka and event-driven architectures Understanding of Event Sourcing and CQRS Experience with AWS cloud services English level Upper-Intermediate Legal & Hiring Information Solstice Analytics is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more. Reasonable accommodations are available to enable individuals with disabilities to perform essential functions. Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs. Compensation details are shared with candidates at the early stage of the recruitment process. The offer is not binding until a signed contract is in place. Your Benefits at Solstice Analytics Solstice Analytics benefits vary by location and contract type. Your recruiter will fill you in on the details. International projects In-office, hybrid, or remote flexibility Medical healthcare Recognition program Ongoing learning & reimbursement Well-being program Team events & local benefits Sports compensation Referral bonuses Top-tier equipment provision Solstice Analytics Culture We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.