Senior Software Engineer.

Sinch AB; Stockholms kommun; Hybrid; SEK 591,000 - 748,000; Full time

Job summary

Sinch AB in Stockholm seeks a strong Software Engineer to join our product engineering team. 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 own the full product lifecycle—from design and implementation to deployment and monitoring. We use Java, NodeJS, React, and TypeScript, and you will collaborate with product, design, and other engineering teams while embracing DevOps practices

Qualifications

• 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.

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).

Skills

Java backend development

REST APIs

Distributed systems

React frontend development

TypeScript

Tools

AWS

Kubernetes

Docker

Job description

ABOUT SINCH

Sinch is pioneering the way the world communicates. More than 150,000 businesses — including Google, Uber, Paypal, Visa, Tinder, and many others — rely on Sinch’s Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email. Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey. At Sinch we “Dream Big”, “Win Together”, “Keep it simple”, and “Make it Happen”. These values are our foundation!

DESCRIPTION

We are looking for a strong Software Engineer to join our product engineering team in Stockholm. 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

• 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

Salary:

Themonthlysalary for this position is between53,000 SEK- 67,000 SEK.Factors which may affect pay within this range may include skills, education, experience, and other qualifications.

OUR HIRING PROCESS

We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel. We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: https://www.sinch.com/careers/. No matter who you are, we hope you find an exciting path forward - hopefully with us!