Rust / C++ Systems Engineer — Real-Time Processing in Urbar

About Us & The Mission Join us to protect the world's communities from financial crime.

Our real-time fraud prevention solutions protect more than 100 billion payment transactions per year across the globe.

To address the challenges of an evolving technological ecosystem and growing market demands, we are **building a brand-new, dedicated engineering team**.

This is a rare opportunity to join at the foundation: you will help shape the future of our technology stack, evaluate architectural alternatives, and directly inform key technical decisions in close collaboration with technical leadership.

If you thrive in an environment where your voice directly impacts architecture, technology choices, and long-term product direction, this is the place for you.

Role & Opportunity We are evolving our real-time transaction processing engine toward a modern, modular architecture capable of handling 5,000–15,000 transactions per second with deterministic, near real-time latency.

As a founding member of this new team, you will be instrumental in defining the processing architecture, benchmarking architectural alternatives, and shaping our transition toward modern languages and concurrent design patterns.

You will work closely with technical leadership to evaluate core trade-offs, drive proof-of-concepts, and set engineering standards for high-performance computing across the organization.

What you will work on Shape the future processing architecture by prototyping, benchmarking, and evaluating modern technology options (Rust and modern C++).

Profile existing hot-path execution models to establish empirical baselines (p50 through p99.9 latency distributions).

Design and implement high-throughput, lock-free, and shared-nothing concurrency models.

Help define inter-process communication (IPC) and service boundary contracts for both co-located and distributed deployments.

Build deterministic testing harnesses, sanitizer pipelines (ASan, TSan), and regression suites to guarantee correctness under sustained high loads.

Embed structured observability (metrics, distributed traces) directly into performance-critical paths without introducing latency jitter.

Work closely with leadership to guide architectural decisions, toolchain choices, and team coding practices.

Requirements Degree in computer science, software engineering, or equivalent practical experience.

Strong hands-on programming experience with Rust and/or modern C++ (17/20/23) in performance-sensitive or low-latency systems.

Deep understanding of concurrent programming: memory models, cache efficiency, synchronization primitives, and lock-free data structures.

Experience with profiling, benchmarking, and optimizing applications on Linux.

Strong analytical mindset: ability to evaluate architectural trade-offs with empirical data.

Collaborative mindset and eagerness to actively shape technology choices and team practices.

Fluent spoken and written English.

Nice to have Experience with high-throughput or real-time transaction processing systems (fintech, trading, telecommunications).

Knowledge of FFI and cross-language interoperability (Rust / C++).

Experience with Open Telemetry or similar observability frameworks.

Familiarity with containerization concepts (Docker).

Key concepts Rust Modern C++ (20/23)Near Real-Time Latency & High Throughput Lock-Free Concurrency Shared Memory / IPCLinux Systems Programming ASan / TSan Benchmarking & Profiling Architecture & Tech Strategy We offer Long-term position with excellent perspectives & high architectural impact Opportunity to shape the technical foundation of a mission-critical platform Direct collaboration with leadership in a flat, engineering-driven culture Flexible working hours & hybrid model (2 days remote)Modern workplace in a former monastery near Koblenz with latest hardware Personal mentoring and continuous professional development Regular team events and corporate benefits To apply: Send your application (cover letter, CV, degree/grade average, references, and salary expectations) to jobs@iris. de.