mmesoma.saint
Status: AVAILABLE|Lagos, Nigeria (UTC+1) — Open to Global Remote
Backend & Cloud Infrastructure & Security Engineer

Engineering high-throughput backends & zero-trust cloud infrastructure.

Specialized in low-latency microservice architectures, infrastructure-as-code automation, and resilient data pipelines built to withstand failure at scale.

Core Focus

Distributed Systems

FastAPI • Go • Node.js

Infrastructure

IaC & Kubernetes

Terraform • Docker • AWS

Reliability Target

99.99%

Zero-Trust & Fault Tolerance

02 // Systems & Stack Matrix

Architectural Competencies & Infrastructure

Organized by architectural domain. Every technology listed has been deployed to production with automated pipelines, least-privilege access, and monitoring.

Backend & Distributed Systems

High-throughput asynchronous runtimes, RESTful/gRPC APIs, and event-driven worker services.

  • Python / FastAPI
    Async I/O Microservices & REST
  • TypeScript / Node.js
    Internal APIs & Edge Runtimes
  • Go (Golang)
    Concurrency & Low-Latency Services
  • Celery / Redis Queue
    Distributed Task Pipelines
  • gRPC & Protocol Buffers
    Inter-Service RPC
DOMAIN: COMPUTEPROD-VERIFIED

Cloud Infrastructure & Orchestration

Declarative Infrastructure as Code (IaC), container lifecycle management, and immutable deployments.

  • Terraform / OpenTofu
    Multi-Environment Cloud IaC
  • Docker & Multi-Stage Builds
    Minimal Attack Surface Images
  • Kubernetes (K8s)
    Workload Orchestration & Helm
  • AWS (ECS, RDS, S3, IAM)
    Cloud Systems Architecture
  • Linux / POSIX Shell
    Kernel Hardening & Automation
DOMAIN: INFRASTRUCTUREPROD-VERIFIED

Data Persistence & Caching

Relational modeling, indexing strategies, cache-aside layers, and migration versioning.

  • PostgreSQL
    Schema Design, Indexes, Partitioning
  • Redis
    Distributed Caching & Rate Limiting
  • SQLAlchemy / Prisma
    Type-Safe Query Mapping & Migrations
  • Alembic
    Deterministic Database Migrations
  • Supabase / Managed DBs
    Row-Level Security & Edge Sync
DOMAIN: DATAPROD-VERIFIED

DevSecOps & Zero-Trust Security

Automated vulnerability scanning, secret detection, identity protocols, and least-privilege IAM.

  • GitHub Actions CI/CD
    Automated Build/Test/Deploy
  • Trivy / Snyk / SAST
    Container & Dependency Scanning
  • IAM & Least Privilege
    Zero-Trust Role Architectures
  • JWT / OAuth2 / OIDC
    Stateless & Delegated Auth
  • Gitleaks / Secret Mgt
    Pre-Commit & Pipeline Interception
DOMAIN: SECURITYPROD-VERIFIED

Observability & System Health

Structured logging, metrics instrumentation, health probing, and error budget alerting.

  • Prometheus & Grafana
    Metric Scraping & Dashboards
  • OpenTelemetry (OTel)
    Distributed Tracing
  • Structured JSON Logging
    Log Aggregation & Ingestion
  • Health Checks & Probes
    Liveness/Readiness Endpoints
DOMAIN: OBSERVABILITYPROD-VERIFIED
03 // Engineering Standards

Architecture & Reliability Philosophy

The design patterns, reliability principles, and operational guardrails I enforce across every distributed service and cloud deployment.

SEC-01

Zero-Trust & Shift-Left Security

"Assume perimeter breach. Trust nothing implicitly inside or outside the network boundary."

Standard Operational Invariants

  • Strict least-privilege IAM policies with short-lived STS credentials.
  • Automated SAST, DAST, and container CVE scanning gating every PR merge.
  • Zero plain secrets in repos; dynamic retrieval via Vault or KMS.
Zero Tolerance: Hardcoded API keys, wildcard IAM permissions (*:*), and unauthenticated internal microservices.
OPS-02

Immutable Infrastructure as Code

"Manual server configuration is technical debt. Infrastructure must be versioned, idempotent, and ephemeral."

Standard Operational Invariants

  • 100% cloud resources declared in modular Terraform / OpenTofu.
  • No manual SSH tweaks in production; roll forward via immutable container images.
  • Isolated state locking with automated drift detection.
Zero Tolerance: Snowflake servers, unversioned cloud consoles clicks, and configuration drift across environments.
RES-03

Fault Tolerance & Graceful Degradation

"Systems fail constantly. The goal is uninterrupted availability and deterministic recovery under partial outages."

Standard Operational Invariants

  • Idempotent API handlers and consumer queues with dead-letter recovery (DLQ).
  • Circuit breakers, exponential backoff, and distributed rate-limiting.
  • Stateless compute layers to allow instantaneous horizontal scaling.
Zero Tolerance: Cascading failures, unhandled queue poisoning, and non-idempotent billing/mutation endpoints.
OBS-04

Observability-Driven Reliability

"If it is not measured, it is already broken. Telemetry must precede production deployment."

Standard Operational Invariants

  • Structured JSON logs enriched with correlation IDs across distributed boundaries.
  • Prometheus metrics covering the 4 Golden Signals: Latency, Traffic, Errors, Saturation.
  • Health probes testing real downstream dependencies, not just HTTP 200 ping.
Zero Tolerance: Opaque log dumps, unmonitored background workers, and reacting to outages after users report them.
PRF-05

Cost-Aware & Efficient Compute

"Scaling is not just throwing CPU cores at latency bottlenecks. Architecture must optimize cost-per-request."

Standard Operational Invariants

  • Asynchronous background offloading for long-running computational jobs.
  • Cache-aside layers via Redis to shield database read replicas.
  • Right-sized container resource requests/limits to avoid node over-provisioning.
Zero Tolerance: Heavy synchronous blocking requests, unbounded memory allocations, and idle cloud resource waste.
04 // Track Record & Impact

Engineering Experience & System Impact

Production history focused on backend throughput, infrastructure reliability, automated DevSecOps, and scalable software delivery.

Lead Systems Architect & Founder

Optima LogicVenture
2024 — PresentRemote / Lagos, NG

Spearheaded technical architecture and automated infrastructure delivery for distributed applications, microservices, and internal client tooling.

Deployment Velocity
3x Faster
API Uptime SLA
99.95%
P95 Latency
<120ms

Key Architectural Contributions

  • Architected containerized microservice backends with automated CI/CD pipelines, slashing release cycle times by over 65%.
  • Designed zero-trust IAM policies, VPC networking, and Terraform IaC modules for multi-tenant customer cloud workloads.
  • Engineered asynchronous processing workers using Redis queues to offload heavy I/O and PDF/report generation tasks.
STACK:
FastAPIPythonDockerTerraformPostgreSQLRedisAWS

Backend & Cloud Infrastructure Engineer

Enterprise Systems & ConsultingContract
2023 — 2024Remote

Built high-reliability REST APIs, optimized SQL execution paths, and provisioned resilient container clusters for cloud deployments.

Query Optimization
45% Reduction
Pipeline Security
100% Automated

Key Architectural Contributions

  • Refactored relational database queries, query execution plans, and indexing strategies, dropping average query execution times significantly.
  • Standardized Docker multi-stage build profiles across engineering teams to shrink image footprints and eliminate build vulnerabilities.
  • Integrated Trivy container CVE scans and TruffleHog secret scanning to gate automated production pull requests.
STACK:
PythonDjangoPostgreSQLGitHub ActionsDockerLinux

Technical Systems & Code Evaluator

Specialized AI Data PlatformsContract
2023 — 2024Remote

Audited complex algorithmic code bases, evaluated code correctness, and benchmarked multi-language system scripts.

Evaluations Delivered
500+
Accuracy Benchmark
99.2%

Key Architectural Contributions

  • Rigidly audited asynchronous logic, edge-case handling, and runtime complexity in production-level code submissions.
  • Designed rigorous unit and integration test harnesses to validate algorithmic reliability and deterministic outputs.
STACK:
PythonTypeScriptAlgorithmsSystem DesignBenchmarking
05 // Production Systems & Case Studies

Engineered Backend & Cloud Architectures

In-depth architectural breakdowns of distributed services, zero-trust webhook pipelines, and automated observability systems.

Distributed SystemsSource

AutoInvoiceGenerator

Asynchronous high-volume document rendering microservice with isolated headless pipelines.

Throughput
250+ docs/sec
P99 Latency
<180ms
FastAPIPythonPostgreSQLRedisWeasyPrintDocker
SecuritySource

DisputeDrop Engine

High-integrity chargeback automation and idempotent financial webhook processor.

Processing
100% Exactly-Once
Ingestion Latency
<45ms
FastAPIPythonRedisPostgreSQLHMAC-SHA256
BackendSource

ReceiptLens Engine

Resilient document ingestion and heuristic data extraction pipeline.

Accuracy
97.8%
Throughput
50 Tasks/Pod
FastAPIOpenCVTesseractPydanticDocker
DevOpsSource

Store Sentinel

Autonomous health monitoring, synthetic probing, and anomaly alerting for storefronts.

Detection SLA
<30s
False Positive
<0.1%
GoPythonPrometheusGrafanaDocker
CloudSource

Alert Bridge

Fault-tolerant webhook router, alert deduplication, and distributed dispatch engine.

Deduplication
100% Filtered
Dispatch Latency
<60ms
FastAPIRedisPostgreSQLAsyncIODocker