Nexora Systems is a specialist consultancy for engineering teams running mission-critical platforms. We design resilient microservices architectures and tune high-concurrency systems — so your product stays fast under load, predictable under failure, and economical to operate at scale.
10×
Peak throughput gains on tuned services
p99
Tail-latency reduction across critical paths
99.99%
Availability targets sustained in production
$ nexora profile --service checkout-api --rps 10000
▸ baseline p50 42ms p99 610ms err 2.4%
▸ pool sizing ↑ 32 → 96 conns
▸ cache tier hot-key sharding enabled
▸ async boundary queue offload + backpressure
▸ jvm tuning G1 → ZGC, pause < 4ms
✓ tuned p50 11ms p99 78ms err 0.02%
— sustained 10,000 RPS @ 63% CPU headroomTrusted by platform teams at
What we do
We don't sell frameworks or licenses. We embed with your teams, measure real workloads, and deliver architecture and performance work that survives contact with production traffic.
Domain-driven service decomposition, bounded contexts, and API contracts that keep autonomy real. We design for independent deployability, data ownership, and failure isolation — not just diagrams.
Systematic profiling under realistic load. We find the true bottlenecks — lock contention, GC pauses, connection pools, hot keys, N+1 queries — and fix them with measurable before/after evidence.
Graceful degradation, circuit breaking, retry budgets, and blast-radius control. We make sure a single degraded dependency never becomes a full outage.
Metrics, tracing, and structured logging that answer real questions. We define SLOs your teams can actually act on and wire them into alerting that doesn't cry wolf.
Incremental, low-risk paths off monoliths and legacy platforms. Strangler patterns, dual writes, and traffic shadowing let you migrate without a big-bang cutover.
We pair with your engineers and leave behind the runbooks, review checklists, and benchmarks your team needs to sustain the gains long after the engagement ends.
How we work
Most performance work fails because it starts with assumptions. We begin with evidence — production traces, load profiles, and flame graphs — then prioritize the handful of changes that materially improve latency, throughput, or reliability.
Every engagement produces reproducible benchmarks and a written architecture decision record, so the improvements are defensible and durable.
Request a methodology briefingWe map the current architecture, instrument the critical paths, and capture production-representative baselines before touching anything.
Profiling and load testing expose the real constraints. We rank findings by impact and effort, and agree the target outcomes with your team.
We work alongside your engineers — service boundaries, concurrency models, caching layers, and runtime tuning — shipping in small, reversible increments.
Every change is validated against the baseline. We deliver benchmarks, runbooks, and regression tests so the gains hold over time.
120+
Production systems tuned
40k+
Peak RPS validated under test
62%
Average infra cost reduction
11 yrs
Median architect experience
Nexora Systems
Independent engineering consultancy · est. 2014
“Scale is not a matter of adding hardware. It is a matter of removing the things that stop your system from using the hardware it already has.”
— Founding principle, Nexora Systems
Headquarters
Amsterdam · Remote-first
Team
18 senior engineers
Our vision
We believe distributed systems should be understood, not merely operated. Too many organizations adopt microservices and then spend years fighting the consequences: cascading failures, opaque latency, and escalating cloud bills. Our vision is the opposite — architectures that are deliberately scoped, observable by default, and cost-aware from day one.
Nexora Systems was founded by engineers who spent a decade on call for high-traffic platforms in fintech, logistics, and healthcare. We've seen what breaks at 3 a.m. under real load — and we build systems that don't. We stay deliberately small, take a limited number of engagements at a time, and measure our success by what still works a year after we leave.
Evidence over opinion
Every recommendation is backed by a benchmark or a trace.
Small, senior teams
The people you meet are the people who do the work.
Built to hand over
We leave your team stronger, not dependent on us.
Book a free 45-minute architecture review. We'll look at your current topology, traffic profile, and observability gaps, and give you a prioritized list of risks and quick wins — no obligation.