High-Integrity Systems Engineering / US · UK · EU Overlap

Rust engineering for teams that need speed, safety, and fewer production bugs.

We help startups and enterprise engineering teams migrate performance-critical C++ and Python hot paths to Rust—incrementally, with mathematically verified concurrency and zero downtime.

Book a free 30-min technical call See verified case studies

Zero unsafe blocks in business logic

•

Deterministic sub-10ms P99

// Zero-alloc async telemetry batch processor

use tokio::sync::mpsc;

use rayon::prelude::*;

use bytes::{Bytes, BytesMut};

#[inline(always)]

pub async fn process_stream(

mut rx: mpsc::Receiver<Bytes>,

sink: &AtomicBufferPool,

) -> Result<BatchReport, CoreError> {

// SIMD-accelerated vectorization without GIL

rx.par_bridge()

.filter_map(|pkt| parse_simd_header(&pkt))

.for_each_with(sink, |buf, frame| {

buf.commit_zero_copy(frame);

});

Ok(BatchReport::synced())

}

CARGO BENCH: VERIFIED

0 allocs / frame

P99 Ingestion Latency

180ms 12.1ms 93% FASTER

Engineered for teams backed by top Tier-1 VCs

FinTech EU

DataFlow US

Robotics UK

QuantScale

8+ Years

Continuous production Rust deployment

14 Countries

US, UK, DACH, Nordics remote overlap

2.4M+

Crates.io package downloads

Root Cause Remediation

Sound familiar?

Where standard interpreted or garbage-collected runtimes hit an architectural ceiling, Rust delivers predictable zero-cost mechanical sympathy.

Python service pinned at 100% CPU

Global Interpreter Lock (GIL) stalls, asyncio thread serialization, and ballooning pod replicas that fail to scale throughput past 8k req/sec.

SYMPTOM: GIL BOTTLENECK FIX: PyO3 SIMD

Memory leaks & segfaults in prod

Elusive use-after-free conditions, silent buffer overruns in C++ libraries, and unpredictable OOM-killer terminations triggering 3 AM PagerDuty spirals.

SYMPTOM: SILENT CRASHES FIX: RAII & Ownership

Cloud infrastructure outgrowing MRR

Paying six-figure AWS bills for high-RAM JVM/Go nodes merely to hold dead garbage collector heaps, instead of serving pure computational payloads.

SYMPTOM: 80GB HEAP ALLOC FIX: 60-80% CUT

Team wants Rust, but fears curve

The steep borrow checker hurdle slows current roadmap commitments. You need senior architects to establish clean idiomatic patterns first.

SYMPTOM: VELOCITY STALL FIX: Co-Engineering

Modular Architecture Scope

What we do

Specialized bare-metal and high-concurrency systems engineering from greenfield architectural design to mission-critical hot-path rewrites. Hover cards to reveal engineering deliverables.

Microservices

Core Rust Backend Engineering

Ultra-low latency web backends, message queues, and ingestion pipelines engineered with Tokio, Axum, Tower, and Tonic gRPC for high-throughput concurrency.

↳ Lock-free queues & atomic state transitions
↳ Zero-copy byte deserialization pipelines

tokio
axum
grpc

Incremental

Safe Strangler Migrations

Port legacy C/C++, Go, or Python engines incrementally without risky Big Bang rewrites. Canary routing and transparent FFI adapters maintain continuous uptime.

↳ Shadow traffic replay & bitwise verification
↳ Safe rollback proxies with 0ms cutovers

strangler-fig
c-ffi
zero-downtime

Diagnostics

Code Audits & Flamegraphs

Deep bytecode profiling, heap layout alignment, lock contention removal, unsafe block fuzzing with Miri, and supply-chain dependency audits (cargo-audit).

↳ Perf c2c cache line false-sharing audit
↳ Criterion.rs micro-benchmarks with CI gating

flamegraph
miri-fuzz
perf-stat

FFI Acceleration

Python & Node.js Acceleration

Keep your high-level Django, FastAPI, or Express APIs while offloading CPU-intensive loops, parsers, and crypto calculations to native Rust via PyO3 and Napi-rs.

↳ GIL bypass using Rayon parallel iterators
↳ Zero-copy NumPy and PyArrow tensor sharing

pyo3
napi-rs
simd-json

Edge & Wasm

WebAssembly & Embedded

Ultra-fast in-browser compute modules, zero-cold-start edge workers (Cloudflare Workers, Fastly Compute), and strict no_std embedded firmware for robotics.

↳ Sub-millisecond cold start WASI sandboxes
↳ Real-time static interrupt handling in no_std

wasm32-wasi
no_std
embedded

Team Upskill

Team Training & Mentorship

Pair programming, async PR reviews, and practical hands-on workshops that turn C++, Go, and Python developers into confident, productive Rust contributors in 30 days.

↳ Idiomatic borrow checker ergonomics playbook
↳ Strict custom Clippy CI configuration rules

pairing
async-review
workshops

Architectural Creed

“Safe abstractions are not an accident of good intentions; they are a mathematical discipline executed at compile time.”

Stratumstack Core Systems Doctrine

Transparent Engagements

Clear scope. Clear pricing.

Fixed-price engineering packages or monthly retainers. No open-ended hourly billing, no surprises.

SPRINT DISCOVERY 1 WEEK

Rust Readiness Assessment

Complete diagnostic of your existing architecture. We identify bottlenecks, evaluate Rust ROI, and produce an incremental migration roadmap.

From $1,400 / one-time

Codebase profiling & feasibility assessment
Strangler-fig migration blueprint & milestone plan
Cloud compute cost savings model
60-minute executive & tech lead readout session

Get Assessment Scope

Performance Audit & Fix

Hands-on profiling, flamegraphs, memory layout restructuring, and actual turnkey Pull Requests that resolve your latency regressions directly.

From $3,500 / sprint

Everything in Assessment package
Complete flamegraph and allocations profiling
Production PRs implementing zero-copy hot paths
Automated Criterion.rs benchmark harness
Guaranteed p99 metric reduction threshold

Book Performance Sprint

EMBEDDED CAPACITY FLEXIBLE

Monthly Retainer

On-demand senior systems capacity embedded in your sprints. Ideal for continuous feature development, PR reviews, and team pairing.

From $900 / month

Reserved senior Rust engineering sprint hours
Priority async GitHub code reviews under 12h
Direct Slack / Discord / MS Teams channel access
Weekly live pairing & architectural alignment

Inquire Retainer Slot

Bilateral NDA signed prior to source disclosure. Invoiced in USD or EUR.

NO HIDDEN SETUP FEES • MONTH-TO-MONTH CANCELABLE

Production Telemetry

Results, not promises

Real engineering impact verified across high-volume financial orderbooks, 50TB+ telemetry pipelines, and embedded robotics runtimes.

FinTech · San Francisco • Zero-downtime cutover

Order-Routing Engine Microsecond Migration

The Challenge: A Python/asyncio websocket order routing engine experienced severe p99 jitter (240ms spikes) during market open liquidity surges, triggering message dropping and dropped client connections.

Our Approach: Extracted the hot network ingest and order matching core into a decoupled Rust service using Tokio, lock-free ring buffers (crossbeam), and zero-copy JSON parsing with SIMD-json.

“Stratumstack delivered the migration with zero downtime. Our ingestion queue lag vanished overnight, and our system sailed through extreme volatility days without breaking a sweat.”
Marcus Vance — VP of Engineering, US Trading Platform

BENCHMARK METRICS CRITERION_V2

P99 Order Latency 4.2ms

Was 240ms in Python (98.2% reduction)

Throughput Capacity 15x

Scaled from 6.2k to 94k msgs/sec per instance

Observability SaaS · London • AWS Cost Optimization

50TB Telemetry Pipeline Memory Squeeze

The Challenge: A log parsing service implemented in Go and Java was consuming huge RAM heaps for garbage collection, running 120 memory-optimized EC2 instances and burning $62k monthly.

Our Approach: Replaced the filtering daemon with an event-driven Rust service utilizing manual memory arena allocation, zero allocations during parsing, and AVX-512 vectorization.

“They didn’t just write code; their memory profiling and systems architecture expertise literally saved our runway. We reduced our AWS fleet by nearly 70%.”
Helena Croft — CTO, Observability SaaS (London)

INFRASTRUCTURE REDUCTION COST_AUDIT_PASS

Monthly AWS Compute -$42,000 / mo

68% overall reduction in EC2 instances

Per-Node Memory Footprint 380 MB

Down from 12.4 GB JVM Heap (97% memory saved)

Robotics & AI · Munich • Safety Critical no_std

Zero-Crash Autonomous Sensor Fusion

The Challenge: Sporadic memory corruption in a multithreaded C++ LiDAR/IMU sensor pipeline caused random micro-crashes during field validation runs, risking autonomous safety certification.

Our Approach: Ported the sensor fusion layer to safe, verifiable Rust with strict static compile-time lifetimes and zero unsafe blocks, integrating seamlessly with ROS2 via custom bindings.

“Absolute precision and seamless collaboration across timezones. Stratumstack eliminated memory safety issues from our embedded edge units entirely.”
Dr. Stefan Weber — Head of Robotics, Munich

SAFETY RELIABILITY ISO_26262_READY

Memory Corruption Faults 0 Faults

Across 180,000 continuous operating hours

Deterministic Cycle Time ± 40ns

Zero GC pauses / fully predictable hard real-time loop

Ecosystem Stewardship

Built in the open

We don't just write Rust for hire. We maintain foundational crates, publish in-depth systems research, and lead developer communities worldwide.

Open Source Impact CRATES.IO

TOTAL CRATE DOWNLOADS 2,419,000+

fast-stratum Zero-alloc binary framing toolkit
680k dl
tokio-rate-limiter Lock-free token bucket algorithm
520k dl
pyo3-arrow-bridge Direct Arrow memory sharing for PyO3
410k dl

40+ Public Repositories View GitHub

Deep Systems Writing RESEARCH

8 MIN READ · SYSTEMS FFI

Migrating a Python Hot Path to Rust Without a Full Rewrite (Using PyO3)

Avoid costly copies by establishing memory alignment across the Python runtime and Rust binaries using shared memory Arrow tensors.

12 MIN READ · ASYNC INTERNALS

Demystifying Rust's Pin & Unpin in Custom Tokio Future Implementations

A structural walkthrough of why self-referential async futures require heap pinning, and how to safely write cancellation-safe drivers.

Published in Systems Weekly Read All Articles

Talks & Community KEYNOTES

RUSTCONF · USA SAN JOSE, CA

Zero-Copy Network Protocols in Practice

Architectural breakdown of eliminating userspace buffer copies using io_uring and Tokio.

COMMUNITY LEAD & HOST 1,200+ MEMBERS

Rust India Community Chapter

Founding organizer hosting monthly virtual hackathons, compiler workshops, and mentoring high-potential systems developers.

Recordings on YouTube View Sessions

Delivery Cadence

Remote, but never distant

A structured engineering partnership designed for asynchronous velocity, zero communication friction, and continuous delivery.

01

Discovery Triage

30-minute deep technical review of your bottlenecks, repo architecture, and goals.
02

Proposal & Scope

Fixed milestone deliverables, risk mitigation plan, and fixed budget with zero overruns.
03

Sprint Kickoff

Access setup, dev container initialization, and Criterion baseline benchmarks established.
04

Weekly Demos

Clean compilable PRs, flamegraph progression readouts, and recorded video demos.
05

Handover & CI

Full IP transfer, documented architecture, CI/CD linters locked, and team pairing.

The 24-Hour Velocity Advantage

Operating from India (UTC+5:30) allows 4+ hours of active real-time overlap with London and US East Coast mornings. Your team reviews at night; we implement, test, and push before your morning coffee.

San Francisco (PST) 08:00 AM (Sync)

London (GMT) 01:00 PM (Overlap)

Bengaluru (IST) 06:30 PM (Active)

True 24-hour round-the-clock shipping

Transparent, Noise-Free Channels

Direct access to senior Rust engineers via your shared Slack or Teams channels. Daily concise written standups, crisp async Loom walkthroughs, and zero junior agency overhead.

// Async Daily Check-in

• Benchmark PR #142: Ingestion latency down 44%

• Clippy pass: 0 warnings, MIRI memory verified

• Ready for Canary deployment review

Direct developer-to-developer collaboration

Flexible Engagement Models

Adapt our involvement to your stage. Kick off with a rapid 1-week assessment, scale up into a turnkey performance sprint, or retain dedicated monthly senior capacity as your core team scales.

Fixed-Price Milestone Deliverables
Monthly Embedded Retainers
Specialized Advisory & PR Review Blocks

Zero long-term lock-in

Rigorous Governance

Enterprise-grade trust & compliance

Engineered to satisfy the stringent security, legal, and operational audits of European and North American enterprise organizations.

Strict Bilateral NDA

Standard Delaware, UK, or EU governing law NDA executed prior to discussing architecture or receiving repository access.

PRE-ENGAGEMENT

100% IP Transfer

All code, automated test harnesses, benchmarks, and technical docs become your exclusive property upon invoice payment.

EXCLUSIVE OWNERSHIP

Zero-Downtime Rollout

We never perform high-risk cutovers. Canary rollouts, parallel run verifications, and instant rollback kill switches protect production.

ZERO IMPACT

Secure Workstations

Hardware FIDO2 YubiKey enforced access, encrypted LUKS disk drives, zero telemetry storage on unapproved personal devices.

SOC2 PROTOCOLS

Clean Rust CI/CD

Every deliverable strictly conforms to zero compiler warnings, 100% Clippy pedantic compliance, and verified Miri memory passes.

VERIFIED CODEBASE

Direct Principal Engineer Consultation

Ready to make your systems faster, safer, and cheaper to run?

Book a direct 30-minute technical triage call. No sales reps, no high-pressure pitches—just systems code, architecture profiling, and honest feasibility analysis.

Schedule Technical Call hello@stratumstack.com

Free 30-minute triage • Strict bilateral NDA

Technical Review Slot 30 Min · Google Meet

Available

Select Window (IST / UTC+5:30)

Lock Slot (Tomorrow · 15:30 IST) & NDA

Prefer asynchronous? Send your repo or flamegraph directly.