Sr Software Engineer

Sr Software Engineer

Spain

and 1 more

Job Description

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!

• As a Senior Software Engineer, you will play a key role in designing and building the next generation of our Inbox Platform. You will work in a dynamic, collaborative environment to develop scalable distributed systems. Your contributions will directly impact the efficiency, performance, and safety of conversations at scale.

What You’ll Do

• Design, develop, and maintain backend services for Inbox Platform, while contributing to our frontend applications.

• Build high-performance, scalable, and distributed systems.

• Work with Java, Spring, Kafka, SQL and NoSQL DBs to enhance our product, ensuring safety, efficiency, and responsiveness.

• Develop internal tools for monitoring, debugging, and optimizing applications at scale.

• Ensure observability, reliability, and fault tolerance across all services.

• Collaborate with cross-functional teams including Software Engineers, UX Designers and Product Managers.

• Maintain a strong focus on code quality, security, and best practices in software development.

• This is a 95% remote role. You must be based in Spain and we will bring you to the office in Madrid for some days every quarter.

Requirements

• What We Look For

• Production-level experience in backend development using Java.

• Deep understanding of distributed systems and experience building high-scale microservices and event-driven architectures.

• Strong background in database design and optimization, particularly with DynamoDB, Cassandra, PostgreSQL or other distributed databases.

• Experience with observability, logging, and monitoring tools for debugging and performance analysis.

• Familiarity with cloud platforms (AWS, GCP, or Azure) and containerized deployments (Docker, Kubernetes).

• A problem-solving mindset with the ability to debug complex distributed systems.

• Strong communication skills and the ability to work effectively in a collaborative environment.

• Nice to Have

• Experience with modern Frontend frameworks like React and HTMX.

• Knowledge of message brokers like Kafka and RabbitMQ

Benefits

• Sinch is a global company composed of people from different countries and cultures. Our benefits adjust regionally to support employees and help them to thrive in every stage of life. We offer valuable benefits and resources, including health and life insurance, a flexible work environment, retirement savings plans, and more.

• The annual salary for this position is between between €60.000 until €80.000 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!

• Please send your CV in English language.

• Apply Now

• Job Info

• Job Identification

• 1560

• Job Category

• Software Engineering

• Posting Date

• 09/16/2026, 09:06 AM

• Apply Before

• 10/30/2026, 08:00 PM

• Job Schedule

• Full time

• Locations

• Spain

• Madrid, Comunidad de Madrid, Spain

• 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.

• Minnesota Applicants: In accordance with the Minnesota Human Rights Act, Sinch maintains a workplace free from discrimination and retaliation, detailed here. Information regarding applicant rights and required Minnesota workplace notices are available here.

• Similar Jobs

• Sr Software Engineer

• Spain

• and 1 more

• Posted on 07/16/2026

• Are You Still With Us?

• It seems you've been gone for a while. For security reasons we will end your session automatically in 03:00 unless you would like to continue working.

• End Session

• Continue Working

• Work Summary

• This summary is generated by AI Assist. Click inside the summary text box to make changes as necessary.

• 1000

• Required

• Discard

• Add Summary

• Page Sr Software Engineer - Sinch Careers loaded