Software Engineer, Platform (Developer Experience)

Veritaz AB

Veritaz is a leading IT staffing solutions provider in Sweden, committed to advancing individual careers and aiding employers in ensuring the perfect talent fit. With a proven track record of successful partnerships with top companies, we have rapidly grown our presence in the USA, Europe, and Sweden as a dependable and trusted resource within the IT industry. Assignment Description We are looking for a Backend Software Engineer for a short-term assignment What You Will Work On Modernize backend services and data processing pipelines Upgrade applications to the latest JDK, Scala 3.x, and Play Framework 3.x Develop and maintain scalable Java and Scala-based backend solutions Support migration of authentication services from legacy APIs to OAuth-based solutions Build and enhance Spark-based batch processing and migration pipelines Design and implement scalable data migration and transformation solutions Utilize GenAI tools to automate code modernization and dependency upgrades Create reusable tooling, prompts, automation assets, and technical runbooks Extend and improve existing Scala and Play Framework applications Collaborate with engineering teams to ensure compatibility, performance, and maintainability Support software quality, testing, deployment, and operational improvements Contribute to continuous improvement and platform modernization initiatives What You Bring Hands-on experience developing and supporting production-grade Java and/or Scala services Strong backend development experience in enterprise environments Familiarity with Play Framework and its internal architecture Experience working with Apache Spark for large-scale data processing Knowledge of OAuth-based authentication and authorization patterns Understanding of software architecture, system integration, and backend modernization Strong problem-solving and analytical skills Ability to work independently and collaboratively in fast-paced environments Excellent communication and teamwork skills

Veritaz AB

Veritaz is a leading IT staffing solutions provider in Sweden, committed to advancing individual careers and aiding employers in ensuring the perfect talent fit. With a proven track record of successful partnerships with top companies, we have rapidly grown our presence in the USA, Europe, and Sweden as a dependable and trusted resource within the IT industry. Assignment Description We are looking for an experienced Fullstack Developer What You Will Work Onre Design, develop, and maintain modern full-stack applications Build scalable backend services and APIs using Java Develop responsive frontend applications using React and Next.js Design and implement scalable cloud-native solutions Build and maintain microservices and distributed applications Contribute to system architecture and technical design decisions Develop robust, high-quality, and maintainable code Optimize application performance, scalability, and reliability Collaborate with developers, product owners, designers, and data scientists Analyze complex technical and business problems to deliver practical solutions Participate in Agile development and cross-functional collaboration Drive continuous improvements in engineering practices and code quality Support deployment, maintenance, and continuous enhancement of applications Contribute to knowledge sharing and technical mentoring within the team What You Bring Strong experience in Fullstack Development Extensive experience with Java backend development Strong experience building scalable APIs and backend services Practical experience developing modern web applications using React Experience with Next.js is highly preferred Experience working with modern cloud platforms Strong understanding of system design, data structures, and algorithms Experience designing scalable and maintainable software architectures Experience building microservices and distributed systems Experience working in Agile and cross-functional development teams Strong focus on software quality, performance, and scalability Excellent analytical and problem-solving skills Strong collaboration and communication skills Experience with load testing and performance optimization is an advantage Experience with Android or iOS development is a plus Experience with Google Cloud Platform (GCP) is beneficial Experience with gRPC is a plus Experience with BigQuery or Bigtable is advantageous Ability to work effectively in a fully remote environment

Celsus Engineering AB

Description Build the next-generation payment platform on a modern and future-proof tech stack. Working in a cross-functional team What we’re looking for Proven ability to design, optimize, and operate data-intensive systems, including schema design, performance tuning, and production troubleshooting in MS SQL Server–based environments. Deep understanding of database performance and reliability, including indexing strategies, query optimisation, and handling production issues. Experience building and operating backend services using .NET/C#, with a solid understanding of microservice architectures and distributed systems. Experience designing and working with asynchronous messaging and event-driven systems, using Kafka, IBM MQ, or similar technologies. Experience running services in containerised and orchestrated environments (Docker, Kubernetes/OpenShift), with awareness of scaling, resilience, and failure modes. Experience contributing to or owning CI/CD pipelines for database changes and deployment automation, with a focus on safe, repeatable releases. A collaborative engineering mindset, with a willingness to share knowledge, learn continuously, and improve how the team builds and runs software. Meritorious with experience from financial services, payments, or other regulated environments. Strong communication skills, with fluency in English; Swedish is a plus