Java Engineer – Automation and Efficiency

Paysend

Software Engineer building high-performance backend services at Paysend's Automation and Efficiency team. Collaborating on distributed systems for financial transaction processing and analysis.

Posted 5/25/2026full-timeBelgrade • 🇷🇸 SerbiaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsDockerGoogle Cloud PlatformJavaMicroservicesPostgresRustSpring

About the role

Key responsibilities & impact

Design, implement, and maintain backend services and internal tools in Java, powering the processing and analysis of millions of financial transactions daily
Own and evolve PostgreSQL -based data models, queries, and performance optimization across multiple services.
Build and improve systems that automate operational and transaction-monitoring workflows at scale
Work within a distributed microservices ecosystem, handling service communication, dependencies, and evolving integrations
Contribute to the design and implementation of a new fraud monitoring platform built on the company’s modern technology stack
Investigate complex production and operational issues, identify bottlenecks, and implement long-term improvements
Collaborate closely with QA and Analytics teams to ensure systems are reliable, scalable, and operationally effective
Monitor and improve system performance, observability, reliability, and scalability across services
Contribute to CI/CD and deployment automation improvements across engineering workflows

Requirements

What you’ll need

5+ years of backend development experience with Java and Spring
Strong hands-on experience with PostgreSQL in production systems
Experience working with distributed systems and microservices architectures
Experience with major cloud platforms, preferably AWS or GCP
Strong engineering mindset with the ability to solve unfamiliar and complex technical problems independently
Comfortable working across multiple services and technical domains
Strong ownership mentality from implementation through deployment and operational support
Ability to adapt quickly to changing technical and business priorities
Great to have: Experience with CI/CD pipelines and deployment automation (GitLab preferred)
Experience with Docker or other containerization technologies
Hands-on experience with C# or Rust
Experience in fintech, payments, fraud detection, or other transaction-heavy systems
Bachelor’s or Master’s degree in Computer Science or a related field

Benefits

Comp & perks

Make a Global Impact: Directly impact millions of users worldwide
Accelerate Your Career: Benefit from internal mobility, mentoring programs, and continuous learning opportunities
Thrive in a Connected, Global Organization: Collaborate with colleagues across our international hubs and more
Embrace a Principle-Driven & Focused Culture: Work in an organization guided by strong principles and values that actually help you achieve more than you thought possible
Enjoy Competitive Compensation and Benefits: Receive a competitive salary, benefits, and flexible work arrangements

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

JavaSpringPostgreSQLmicroservicescloud platformsAWSGCPCI/CDDockerC#

Soft Skills

engineering mindsetproblem-solvingownership mentalityadaptabilitycollaboration

Certifications

Bachelor’s degree in Computer ScienceMaster’s degree in Computer Science