Senior Software Engineer - Transaction Processing (Java, AWS, DynamoDB)

United States Digital Space LLC; United States; Hybrid; USD 102,762 - 137,017; Full time

Benefits offered by this job

Hybrid working

Learning and development budget

Insurance

Gym membership

Enhanced family leave

Mental health platform

Pet-friendly office

Job summary

The Company in Berlin is seeking a Senior Software Engineer to join the Transaction Processing – Gateways team. You will own end-to-end features from design to production, building a scalable payment processing engine exposed via the company API.

We value hands-on engineers who thrive in an agile environment, with strong English communication, problem solving, and a pragmatic, collaborative mindset. Hybrid work with on-site days, plus learning budgets and comprehensive benefits.

Qualifications

• Experience designing and building scalable software systems.
• Strong communication skills in English and collaboration across teams.
• Hands-on in modern cloud-based microservice architectures.

Responsibilities

• Own end-to-end features from design to production in the payment gateway.
• Contribute to a scalable, secure, and auditable gateway platform.
• Collaborate in an agile team with pair programming and ADR/RFC processes.

Skills

Results-driven

Collaborative

Problem solving

Strong communication

English proficiency

Education

Bachelor's degree in Computer Science or related field

Tools

Java

Spring Boot

REST APIs

AWS (EKS, DynamoDB, Kinesis, OpenSearch)

Datadog observability

Terraform

Job description

At the company, our mission is to simplify access to local payment methods and our vision is to enable the sale of goods and services to anyone in the world using their preferred way to pay. We empower partners such as Ant Group, PayPal and Stripe to access new markets, connect with more customers, and accelerate their growth.

Our strength lies in our diverse global team with 50+ nationalities and 10+ international locations – all united around one goal – to deliver the best possible products and services to our partners and customers.

While our company mission is to keep innovating global commerce, our internal mission is to #chooseaction, #beopen, #thinkcustomer, #gofurther and #wintogether.

The Purpose:

At the company, Senior Software Engineers (m/w/x) make some of the most significant decisions for the company. Think of yourself as an important contributor to the success of your team, with a significant impact on the team’s product, but also on its culture and spirit.

The Transaction Processing – Gateways team in Berlin is in charge of building, enhancing and maintaining payment processing products, with the company Global processing gateway as the core platform. The team needs to ensure the platform is continuously fully-featured, scalable, reliable, cost‑efficient, secure, and auditable while discovering new ways to reduce the integration efforts from customers and reduce the time to enable new payment methods.

What you’ll do:

• Build and maintain the company’s main payment processing engine that is exposed via the company API.
• Own end‑to‑end products and services from design to rolling out to production.
• Execute with a "you build it, you run it" mindset, potentially participating in an on‑call rotation.
• Share your knowledge and build creative solutions while helping your team as well as stakeholder teams to evolve for the best practices.
• Be an integral part of an agile team that collaborates closely and transparently via pair programming, asynchronous communication over ADRs and RFCs, knowledge sharing as well as on‑demand brainstorming sessions.
• Use the latest technologies to solve real problems for our customers at a massive scale.

What we look for in you:

• Results‑orientated, collaborative, pragmatic mindset.
• Experience in designing and building scalable products and services.
• Motivation and appetite for problem solving.
• Great skills to break down complex problems into manageable and deliverable pieces.
• Excellent writing and drawing skills and willingness to express your ideas in such forms to provide the best overview possible for any incoming problem.
• Working proficiency in English.

Technical requirements:

In the transaction processing domain, we build and maintain the company’s primary payment gateway. Therefore, our expectations are high. We expect you to bring knowledge and experience in most of the following technologies:

• Java, Spring Boot, REST APIs
• AWS Cloud components such as EKS, DynamoDB, Kinesis and OpenSearch
• Event‑driven microservice architecture
• Observability with Datadog
• IaC via Terraform

Even better if:

It is a big plus if you are coming from a payments background. Additionally, hands‑on experience with AI as a software engineer is more than welcome.

What’s in it for you?

• Hybrid working – We offer a hybrid structure with a 3 days / week on site expectation, so you can strike the balance between office and home working. In addition to our 30‑day holiday allowance, we also provide a work from abroad policy, enabling employees to work remotely for up to another 30 days per year.
• Learning and Development – We offer a €1,000 annual budget to support your professional growth—because investing in your development benefits us all. In addition, we provide leadership cafés, on‑the‑job training, and other opportunities to help you grow your skills and thrive in your role.
• Insurance – Because better safe than sorry – we want our employees to benefit from various insurances including accident insurance, disability insurance, direct insurance (bAV) and travel insurance.
• Gym membership – the company helps contribute towards the costs of your gym membership, supporting your physical fitness journey while easing the burden on your wallet.
• Enhance Family Leave – We understand the importance of family – that’s why we offer enhanced family leave to support you during key life moments.
• Mental Health Platform – We’ve teamed up with a top well‑being platform to provide one‑on‑one therapy, chat therapy, therapist‑led courses, guided meditations, and more.
• Pet‑friendly office – Because work is better with your paw‑tners by your side.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please refer to our Candidate Privacy Policy – https://www.the company.com/candidate-privacy-policy/.