Senior Backend Engineer – Java

Swediumglobal; Stockholms kommun; On-site; SEK 600,000 - 800,000; Full time

Job summary

Swediumglobal is seeking a Senior Backend Engineer to develop scalable backend systems for engaging audio experiences. You will design resilient services with a strong focus on safety and data integrity.

The ideal candidate has experience with Java, system design, and a collaborative mindset.

Qualifications

• Strong experience with Java (Java 8+) for backend development.
• Solid understanding of system design, data structures, and algorithms.
• Experience building scalable, reliable, and maintainable backend systems.

Responsibilities

• Design and implement scalable backend and data systems across multiple devices.
• Develop modular, reusable platform services with strong observability.
• Ensure safety, privacy, and policy compliance in systems.

Skills

Java (Java 8+)

System design

Data structures and algorithms

SQL

Code quality

Collaborative problem solving

Tools

Google Cloud Platform (GCP)

Job description

Swedium Global is the growing System Engineering and Solution Company, offering cutting-edge services across Cloud, IT, Data Engineering, and Software Development domains to clients across Europe and have established us as a trusted partner for businesses seeking innovative solutions. Swedium Global is having presence in Sweden, Finland, Poland, Czech Republic and in India.

Role Overview

We are looking for a Senior Backend Engineer to build and scale backend systems that support safe and engaging audio experiences for younger audiences. You will design resilient services, ensure strong data integrity, and develop scalable platform capabilities with a focus on safety, privacy, and policy compliance.

Key Responsibilities

• Design and implement scalable backend and data systems across multiple devices and markets
• Develop modular, reusable platform services with strong observability and reliability
• Build and maintain systems that enforce safety, privacy, and policy guardrails at scale
• Define clear APIs, data flows, and system interfaces across the platform
• Collaborate with mobile, web, product, and design teams to deliver robust solutions
• Ensure high-quality code through testing, monitoring (SLIs/SLOs), and best engineering practices
• Contribute to system design discussions and promote operational excellence

Required Skills & Experience

• Strong experience with Java (Java 8+) for backend development
• Solid understanding of system design, data structures, and algorithms
• Experience building scalable, reliable, and maintainable backend systems
• Proficiency in SQL for analysis and troubleshooting
• Strong focus on code quality, testing, and operational reliability
• Ability to work collaboratively and solve complex problems pragmatically

Nice to Have

• Experience with Google Cloud Platform (GCP)
• Knowledge of Scala, Protocol Buffers, Beam, or Scio
• Exposure to data pipelines or data engineering workflows
• Experience with load testing and performance optimization
• Familiarity with mobile platforms (iOS/Android)
• Experience working with large-scale, user-facing platforms

Ideal Candidate

• Product-focused and customer-oriented
• Strong problem-solver with a pragmatic mindset
• Comfortable working in autonomous, fast-paced environments
• Collaborative, curious, and focused on building reliable, high-impact systems