About this role
Sr Software Engineer
Stockholm, Sweden
Job Description
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!
The Role
Our Onboarding team owns how new customers sign up to Sinch and get verified (KYC). It is the very first experience every customer has with us, so it needs to be fast, simple, and secure.
As a Senior Full-Stack Software Engineer, you will design and deliver features end to end across our React frontend and Node.js backend. You will join a small Stockholm-based team alongside a Senior full-stack Tech Lead and a full-stack engineer, as we grow a permanent team that takes full ownership of the product. You will turn unclear requests into clear plans, make sound technical decisions, and help raise the bar for the team. You will collaborate with the Engineering Manager, Product, and cross-functional teams. This is a hybrid role, working from our Stockholm office.
What You Will Do
- Design and build features end to end, from React UI to Node.js and TypeScript services.
- Design and build REST APIs and work with SQL databases (PostgreSQL, MySQL, or similar).
- Write tests on both backend and frontend, and keep quality high through code reviews and CI/CD.
- Turn unclear requests into clear plans.
- Make good technical decisions and explain the trade-offs.
- Suggest a simpler option when a feature is not worth the cost.
- Reduce production issues by finding root causes.
- Take ownership of the result, not only the code.
- Improve others through code reviews and mentoring.
- Follow a build-ship-run approach.
What We Are Looking For
- 7+ years of software development experience.
- Experience in Node.js and TypeScript.
- Strong skills building and designing REST APIs.
- Good knowledge of SQL databases (PostgreSQL, MySQL, or similar).
- Solid skills in React (hooks, state management, component design).
- Good knowledge of HTML, CSS, and web performance basics.
- Experience writing tests on both backend and frontend.
- Experience with Git, code reviews, and CI/CD.
- Ability to design features end to end and explain your choices.
- Ability to work independently on large and unclear tasks.
- Clear communication in English, written and spoken.
- Willingness to work hybrid from our Stockholm office.
Nice to have
- Working experience with Java (Spring or Spring Boot).
- Experience with message queues (Kafka, RabbitMQ, SQS).
- Experience with Docker and a cloud provider (AWS, GCP, or Azure).
- Experience with monitoring and logging tools.
- Knowledge of security best practices.
The pay range for this role is SEK 745,000-1,110,000 per year depending on experience.
Job Information
Job Identification 1613
Job Category Software Engineering
Posting Date 10/12/2026, 05:10 AM
Job Schedule Full time
Job Shift Day
Locations
Stockholm, Sweden
Sinch collects and processes personal data in accordance with applicable data protection laws. If you are a European Job Applicant, see the privacy notice for further details.
At Sinch, we’re committed to building a workplace where everyone feels valued, supported, and welcomed. We provide equal employment opportunities to all employees and applicants and do not discriminate on the basis of race, color, national origin, religion, creed, disability, age, sex, sexual orientation, gender identity or expression, marital status, familial status (including pregnancy, childbirth, and related medical conditions), status with regard to public assistance, veteran status, genetic information, or membership or activity in a local human rights commission, or any other status protected by applicable law.
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