Senior Backend Software Engineer - Communications Squad / Platform Tribe

at  SumUp Services GmbH

The Communications Squad is responsible for self-service communications across SumUp, including SMS, E-Mail, Push Notifications, and WhatsApp. Presently, we send approximately a billion messages per year across the SumUp ecosystem, with ambitious plans to scale the scope and volume of these messages in the coming years. In addition to messaging, our focus extends to user-related topics such as promotions and recommendations.
As part of the Platform Tribe at SumUp, we belong to a group of squads responsible for developing and owning systems designed to accelerate product teams throughout SumUp. Consequently, we address the needs of both our internal teams and the end users they serve.
To thrive in this role, we are seeking someone eager to immerse themselves in a product domain while considering the engineering requirements of a high-volume service. We are actively engaged in critical infrastructure with significant potential for expansion, making the balance between quality engineering and feature delivery crucial to the success of this role.

What you’ll do:

• Develop, deploy, and maintain services associated with Messaging and Promotions using Golang
• Enhance reliability through the implementation of tooling and adherence to best practices for monitoring, alerting, and traceability
• Take part in discussions and evolutions of our microservices architecture with a focus on balancing scalability with flexibility and developer experience
• Collaborate with cross-functional teams to design, develop, and implement scalable and reliable solutions
• Mentor engineers and contribute to the continuous learning culture within the team
• Establish and uphold high standards for code quality and security

You’ll be great for this role if you have:

• 7+ years of experience as a Backend Engineer, specializing in the maintenance of high-traffic backend services
• Experienced in Golang
• Solid grasp of code quality fundamentals, particularly in automation aspects such as testing, linting, and formatting
• Well-versed in API design, particularly RESTful APIs
• Familiarity with our observability stack, including Grafana, Prometheus, and Honeycomb
• Possesses a product-focused mindset with a strong emphasis on creating impactful solutions
• Proven mentorship experience, guiding and developing other team members

Nice to have:

• Previous experience within the Messaging domain
• Experience with Event-Driven Architecture
• Previous experience with Message Queues or Event Stores (RabbitMQ, SQS, Kafka)

ABOUT US:

SumUp is a leading financial technology company, founded in 2012 with the goal of empowering small businesses around the globe. We’re the financial partner of choice for more than 4 million merchants in over 35 markets. We collectively build, plan and fine-tune the technology that drives SumUp and empowers small businesses around the world.
We believe in the everyday hero. Those who have the courage to follow their passion and who have the strength and determination to realise their dreams. Small business owners are at the heart of all we do, so we’re creating powerful, easy-to-use financial solutions to help them run their business. With a founders mentality and a ‘team-first attitude’ our diverse teams across Europe, South America, and the United States work together to ensure that small business owners can be successful doing what they love.
SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by Company policy. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.

What you’ll do:

• Develop, deploy, and maintain services associated with Messaging and Promotions using Golang
• Enhance reliability through the implementation of tooling and adherence to best practices for monitoring, alerting, and traceability
• Take part in discussions and evolutions of our microservices architecture with a focus on balancing scalability with flexibility and developer experience
• Collaborate with cross-functional teams to design, develop, and implement scalable and reliable solutions
• Mentor engineers and contribute to the continuous learning culture within the team
• Establish and uphold high standards for code quality and securit

You’ll be great for this role if you have:

• 7+ years of experience as a Backend Engineer, specializing in the maintenance of high-traffic backend services
• Experienced in Golang
• Solid grasp of code quality fundamentals, particularly in automation aspects such as testing, linting, and formatting
• Well-versed in API design, particularly RESTful APIs
• Familiarity with our observability stack, including Grafana, Prometheus, and Honeycomb
• Possesses a product-focused mindset with a strong emphasis on creating impactful solutions
• Proven mentorship experience, guiding and developing other team member