Senior Java and SpringBoot developer at AssureSoft - Careers

Jyväskylä, Central Finland, Finland -

Full Time

Start Date

Immediate

Expiry Date

12 Mar, 26

Salary

0.0

Posted On

12 Dec, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Java, Spring Boot, Microservices, REST, gRPC, PostgreSQL, MySQL, SQL, Kafka, AWS, Docker, Kubernetes, Redis, NoSQL, Observability, CI/CD, Mentoring

Industry

IT Services and IT Consulting

Description

The key to our success is simple; we deliver the highest quality, on time, with passion and commitment, and live every day by a set of great values. We've built a company that fosters long-term careers in an environment of continuous learning, with cutting-edge benefits, tools, and resources. In addition, certifications that endorse our company as a great place to work. Responsibilities Design and implement scalable, resilient Java microservices; build high-throughput REST/gRPC APIs. Own supplier/carrier/marketplace integrations end-to-end (auth, mapping, retries, monitoring, performance). Model relational schemas in PostgreSQL and scalable NoSQL in ScyllaDB; optimize SQL and indexes. Implement caching with Redis/Valkey; identify bottlenecks and improve throughput/reliability. Add observability (logs, traces, metrics); collaborate with DevOps on AWS EKS deployments and CI/CD. Write clean, well-tested code; perform reviews; mentor mid/junior engineers; contribute to internal frameworks. Partner with Product/QA/business; document APIs, workflows, integrations, and architecture. Communicate effectively in English. Requirements 5–7+ years of backend engineering with Java; strong concurrency, OOP/design patterns, and distributed systems. Advanced Spring Boot (Web, Data, Security, Scheduling). Hands-on Kafka for high-volume processing (partitioning, retries). Strong SQL; experience with PostgreSQL or MySQL. Microservices communication using REST and gRPC. Cloud experience (AWS preferred); Docker, Kubernetes, and CI/CD familiarity. External API integrations (suppliers, carriers, payments, logistics, marketplaces). Proven performance optimization in large-scale systems. Excellent communication; collaboration with distributed teams; high ownership; organized, detail-oriented; willing to mentor and learn. Advanced English. Nice to Have Experience with ScyllaDB/Cassandra or other high-write NoSQL systems. Experience with event-driven sagas/workflow orchestration frameworks. #LI-REMOTE About us AssureSoft is a multinational software development and information technology company providing strategic consulting, technology services, and outsourcing business processes. We work to innovate and create quality software with motivated, passionate, and qualified teams that develop in an environment of professional, stable growth and continuous learning. Inclusive Opportunities for Every Talent. At AssureSoft, we believe that true innovation is born from diversity—of ideas, experiences, and perspectives. That’s why our hiring practices are inclusive and reflect a firm commitment to equity and equal opportunity. Here, every person—regardless of origin, gender, orientation, or beliefs—finds a space to grow, contribute, and be valued not only for their talent, but also for who they are. What sets us apart Great Place To Work certification. A company with more than 15 years of experience. Work with world-class clients and long-term projects. English scholarships for an external institute. English classes with company teachers. State-of-the-art tools and resources. Certifications for your professional growth. Recreation and leisure activities. Compliance with the regulations and labor rights of your region. Retention of your personal information: AssureSoft will retain your personal information for as long as necessary to fulfill the purposes for which it was collected or as necessary to comply with our legal obligations, resolve disputes, and maintain appropriate business records. Once the purpose has been fulfilled, your personal information will be retained and blocked due to the possibility of legal and governmental requirements, and until the status of limitations has run out. Important Notice Regarding Personal Information: If you do not want your personal and professional information to be retained in our database, please send your request for data removal to info@assuresoft.com.

Responsibilities

Design and implement scalable Java microservices and build high-throughput REST/gRPC APIs. Collaborate with DevOps on AWS EKS deployments and CI/CD while mentoring mid/junior engineers.