Job
In dieser Position verantwortest du die Entwicklung und Wartung leistungsstarker Produktionssysteme, insbesondere durch die Implementierung von lock-freier Parallelität und Performance-Optimierungen unter Linux.
Job-Technologien
Deine Rolle im Team
- Our real-time fraud prevention engine processes more than 100 billion payment transactions per year under strict latency and zero-downtime requirements.
- We are strengthening our core systems team with a senior engineer who has shipped and operated production software across the full range of systems work - from the unglamorous to the highly technical - and who takes the same care with both.
- This is a production engineering role, not a research position.
- The work is varied: some of it is genuinely demanding (lock-free concurrency, cache-line discipline, profiling p99.9 jitter on bare metal), and a meaningful portion of it is not - configuration parsing, serialization correctness, tooling improvements, test harness maintenance, fixing edge-case bugs in subsystems you did not write.
- We need an engineer who executes both kinds of work with the same professional standard, because a production system is only as reliable as its least-glamorous component.
- You will work alongside a small, senior team and collaborate directly with engineering leadership on architecture decisions that have immediate, measurable impact on live systems.
- Identify and eliminate hot-path bottlenecks: profile p99.9 tail latency on Linux using perf and flame graphs, and translate findings into concrete code changes.
- Design and implement lock-free concurrency models (SPSC/MPMC ring buffers, atomic memory ordering, cache-line alignment).
- Design low-overhead IPC using POSIX shared memory and memory-mapped ring buffers between co-located processes.
- Define zero-allocation hot-loop policies: arena allocators, static pre-allocated pools, alignas(64) discipline.
- Write, review, and maintain production Rust/C++ code across the full codebase - configuration handling, serialization formats, protocol parsing, internal tooling.
- Build and maintain sanitizer pipelines (ASan, TSan), regression suites, and CI/CD benchmarking harnesses.
- Diagnose and fix correctness bugs, edge-case failures, and integration issues under real production load.
- Instrument systems with structured observability (metrics, traces, latency histograms) and act on what the data shows.
- Contribute to architecture decisions with evidence-based input, written documentation, and clear trade-off reasoning.
Unsere Erwartungen an dich
Qualifikationen
- A track record of maintaining and improving existing production codebases you did not author, not just building greenfield systems from scratch.
- Practical knowledge of lock-free concurrency sufficient to implement and debug it in production: atomics, memory ordering, SPSC/MPMC rings, false-sharing elimination.
- Working proficiency with Linux performance profiling - you have used perf, flame graphs, or hardware performance counters to find real bottlenecks in production, not just in toy benchmarks.
- Solid grasp of Linux systems programming: mmap, POSIX IPC, file I/O semantics, threading primitives.
- Comfort running AddressSanitizer (ASan) and ThreadSanitizer (TSan) as standard CI/CD practice.
- Fluent spoken and written English.
Erfahrung
- 5+ years of professional experience writing and shipping production software in Rust and/or modern C++ (17/20/23) - in a team, under real operational constraints.
- Demonstrated experience in at least one latency-sensitive or high-throughput production domain: fintech, payments, high-frequency trading, exchange infrastructure, telecommunications core, or equivalent - where performance constraints were real operational requirements, not benchmarks.
Unser Angebot
- A senior engineering position with direct ownership over performance-critical production systems.
- A small, senior team - no ticket queues, no over-process; architectural decisions made by the engineers closest to the code.
- Direct collaboration with engineering leadership in a flat, engineering-driven culture.
- Hybrid working model: 3 days on-site in Urbar near Koblenz, 2 days remote.
- A modern workplace with access to the latest hardware in a relaxed setting (former monastery near Koblenz).
- Continuous professional development and team investment.
Themen, mit denen du dich im Job beschäftigst
Job-Standorte
Das ist dein Arbeitgeber
Die IRIS Analytics GmbH, ansässig in Urbar bei Koblenz, hat sich auf die Entwicklung von Lösungen zur Echtzeit-Analyse elektronischer Zahlungsvorgänge fokussiert. Das Unternehmen bietet Banken und Zahlungsdienstleistern Unterstützung bei der Implementierung von Systemen zur Betrugsprävention und zur Erkennung von Risikomustern.
- Etablierte Firma
- Banken, Finanz, Versicherung
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