Backend Software Engineer Team Lead

Would you like to take part in transforming healthcare? Qbtech is the global market leader in professional ADHD tests, providing tests that are both CE marked and FDA cleared for use as an aid in the assessment and treatment evaluation of ADHD for people age 6-60. Our vision is to transform healthcare by providing a complete system of leading objective tests, products and services that empowers clinical and financial decision-makers to improve outcomes and support patients to better understand their symptoms and treatment. Qbtech is present in 14 countries with offices in Stockholm, London and Houston. Over the next years, Qbtech will make significant investments into new products, technologies and people to further strengthen their services and product offerings with the aim of building an ecosystem with solutions for providers, clinicians and patients. About the role We are looking for a Senior Software Engineer (SSE) for backend works in our product engineering team with systems / services development for the Qbtech platform. Primary implementation languages are Java & Kotlin. The main focus of the work is coding (development) but an SSE works with the entire software delivery lifecycle. The role is based in Stockholm, Sweden and will report to Engineering Manager.  There is no possibility of a complete remote role. This is Hybrid with at least 3 days a week from office. Essential Duties and responsibilities Qbtech’s development of products and services are controlled by Qbtech Quality Management Systems, international standards and certificates as well as specific laws. In accordance with those, essential duties and responsibilities are: Develop and document new product features & stories. Code reviews for peers. Maintain and improve legacy code. Manage DevOps and cloud infrastructure provisioning. Manage software deployment. Troubleshooting/investigation of incidents and bug fixing. We are looking for someone who has Extensive development skills using Java and Kotlin. Strong problem-solving mentality. Knowledge of the Ktor framework. Knowledge of at least one well known test framework such as Junit. Good knowledge of network infrastructure related to web application (examples: load balancer, firewall, security groups, CDN etc.). Experience of working with service provisioning for at least one of the following cloud services platforms (AWS, Google Cloud, Microsoft Azure). Experience of an infrastructure as code (Terraform). Experience with containerization (Docker). Experience from working with Agile development methodologies. Excellent written and verbal skills. At least 6-8 years documented experience. Qualifications Required for Position: Bachelors / Master’s degree in Computer Science or related field. Fluent in English. What can Qbtech offer you? At Qbtech you will have the opportunity to work with something meaningful that helps people understand ADHD while transforming healthcare. You will work in an international environment together with some of the leading experts in the world. You will lead the development of best in class as well as first in class products and services – globally. There are plenty of opportunities to learn and grow and to expand into other technologies within the company. Qbtech also offers education and certifications in fields that are relevant to the technology used within the company.

nShift is the leading global provider of cloud delivery management solutions (SaaS), we enable the frictionless shipment and return of almost one billion shipments across 190 countries each year. We are headquartered in London and Oslo and have over 500 employees across offices in Sweden, Finland, Norway, Denmark, the United Kingdom, Poland, the Netherlands, Belgium, and Romania. Our software is used by many of the world leading e-commerce, retail, manufacturing, and 3PL shippers due to us having over 1000 carriers integrated into our platform, nearly 3 times more than our competitors! If you buy goods online, there is a strong chance that nShift has powered that delivery, so come and join us as we shape the future of shipping, one frictionless journey at a time. About the role We’re looking for a skilled and solution-driven Java Developer to join our Returns team. You’ll help build and evolve the heart of our post-purchase tools – allowing e-commerce websites to offer a smooth returns mechanism and help us ensure it runs reliably at scale. This is a hands-on role where you’ll be involved in everything from design and development to testing, deployment, and monitoring. About you You’re a team player who thrives in collaborative environments but also enjoy working independently when needed. With a structured and solution-oriented mindset, you like solving complex challenges and producing clean, high-quality code. Communication, curiosity, and a positive attitude are key strengths you bring to your work. Responsibilities · Design, develop, test, and release backend features for Returns in line with team and company guidelines. · Build and maintain integrations with e-commerce platforms (e.g. Shopify, Magento, Centra) — including webhooks, authentication, and data imports. · Contribute to architecture and platform decisions (security frameworks, GDPR, architecture, monitoring, CI/CD tools). · Write clean, testable, and reusable code that is scalable and cost-efficient. · Work with modern practices such as code reviews, automated testing, and continuous integration/delivery. · Be an active member of an autonomous team, helping shape both the product and how we work. · Stay up to date with new technologies and proactively suggest improvements for performance and scalability. Required professional experience We are looking for both junior and senior backend engineers with experience in most of the following technologies: · Java · Spring Boot and the Spring ecosystem (Spring Data JPA / Hibernate) · PostgreSQL, including schema migration tooling (Liquibase or Flyway) · AWS (S3, SES, and related services) · CI/CD knowledge such as Jenkins, Bitbucket Pipelines, Docker, etc. · Monitoring tools such as ELK stack or equivalent · Testing: unit testing (JUnit, Mockito), integration testing against mocked external services (WireMock, REST Assured), and performance testing (e.g. JMeter) Nice to have: · Designing and versioning public REST APIs (OpenAPI / Swagger) · Redis and caching strategies · E-commerce or post-purchase domain experience For senior candidates, we additionally value experience working in a large, long-lived codebase — carving out and building modern services alongside a monolith, and driving modernization without disrupting a system that merchants rely on every day. What we’re looking for in you · Strong problem-solving skills with the ability to deliver clean and scalable code. · Service-minded with a positive, proactive attitude. · Comfortable working independently as well as in a collaborative agile team. · Fluent in written and spoken English. Why join us? At nShift, you’ll work on a platform used globally to handle millions of deliveries, solving complex technical challenges with real-world impact. We value knowledge sharing, autonomy, and continuous learning, offering plenty of opportunities to grow your skills while contributing to meaningful projects.