onsite

Senior Backend Developer - Sinch

Backend Engineer

We're looking for a Backend Engineer focused on designing and building scalable technical solutions. This senior role requires 5+ years of relevant experience.

About the role

Senior Backend Developer at Sinch.

Key technologies: Software Development, System Design, Problem Solving.

Key Responsibilities

Build and maintain RESTful APIs and backend services
Design database schemas and optimize queries for performance
Implement authentication, caching and scalability solutions
Collaborate with frontend engineers to define API contracts

Requirements

5+ years of relevant experience in backend engineer
Proficiency in SQL and/or NoSQL databases
Familiarity with microservices and containerization

Skills

software developmentsystem designproblem solving

CompanySinch

DepartmentEngineering

LocationMalmoe, Sweden

Experience5+ years

Tenurefull-time

LevelSenior

Posted July 24, 2026