Senior Software Engineer.

Sinch; Stockholms kommun; Hybrid; SEK 500,000 - 700,000; Full time

Job summary

Sinch is looking for a strong Software Engineer to join our product engineering team in Stockholm. This role involves a 50/50 split between backend and frontend development, focusing on Java backend services and modern React applications. You will be part of a cross-functional team, owning the entire product lifecycle from design to monitoring.

The role offers the flexibility of remote work within Sweden.

Qualifications

• Strong experience building backend systems in Java.
• Solid experience with React and TypeScript.
• Good understanding of frontend architecture and modern web standards.

Responsibilities

• Design, develop, and maintain backend services in Java.
• Build modern, scalable frontend applications using React and TypeScript.
• Contribute to architectural decisions across backend and frontend.

Skills

Java backend development

React

TypeScript

REST APIs

Distributed systems

Cloud-native environments

Job description

We are looking for a strong Software Engineer to join our product engineering team in Stockholm (remote within Sweden possible). This role is a 50/50 split between backend and frontend development, with a strong focus on Java backend services and modern React-based web applications. You will work in a small cross-functional team owning the full product lifecycle — from design and implementation to deployment and monitoring. We believe in “you build it, you run it.”

Tech Stack: Java, NodeJS, React, Typescript

Responsibilities

• Design, develop, and maintain backend services in Java
• Build modern, scalable frontend applications using React and TypeScript
• Contribute to architectural decisions across backend and frontend
• Improve performance, scalability, and reliability of core systems
• Collaborate closely with product, design, and other engineering teams
• Participate in DevOps practices (CI/CD, monitoring, cloud deployments)

Requirements

• Strong experience building backend systems in Java
• Experience building REST APIs and distributed systems
• Solid experience with React and TypeScript
• Good understanding of frontend architecture and modern web standards
• Experience working in cloud-native environments (AWS, Kubernetes is a plus)
• Experience making high-impact architectural decisions
• Fluent in English