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Spar Tech Labs

The Arsenal

We don’t chase shiny tools. We pick technologies that stay reliable under load, stay secure by default, and stay maintainable when your product grows from “v1” to a real platform. Below is the stack we use most — plus the supporting infrastructure that makes it production-ready.

AI & Automation Infrastructure

Agents, RAG, evals, and edge vision — designed to be stable in production.

RAG Pipelines

Chunking, retrieval tuning, citations, and eval gates

Open-source LLMs

Llama / Mistral hosting with cost + latency controls

Vector DBs

Pinecone / pgvector for semantic search and memory

Agent Tooling

LangChain-style orchestration + tool routing + guardrails

Vision Inference

YOLO-class real-time detection + tracking

Edge Optimization

TensorRT / ONNX for fast inference on constrained devices

Automation

n8n / webhooks / queues for reliable workflow execution

Evals & Monitoring

Golden sets, regressions, quality metrics, drift checks

Model Serving

vLLM / TGI + batching, KV cache, rate limits, and cost controls

AUTOMATION_ENGINE: ONLINEstable

Core Web Engineering

The frontend and application layer — optimized for speed, SEO, and maintainability.

Next.js (App Router)
Server Components, caching, streaming, metadata
TypeScript
Strict types to prevent production regressions
Tailwind CSS
Utility-first styling with consistent UI primitives
Framer Motion (selective)
Only where it helps UX — not on LCP
Accessibility
Keyboard, focus states, semantic structure, ARIA hygiene
Performance budgets
LCP/TBT targets and bundle discipline

Backend & Data

Data modeling, APIs, and realtime systems designed for correctness and scale.

PostgreSQL
Schema design, indexes, migrations, and backups
Supabase
Auth + Postgres + RLS policies for secure data access
Prisma
Type-safe access layer and migrations
Redis
Hot cache, rate limiting, sessions, and queues
Queues
Background jobs for heavy work and reliability
API Design
REST/GraphQL patterns, versioning, pagination, limits

Infrastructure & Deployment

Repeatable deployments with sane defaults, rollback paths, and cost visibility.

Vercel / Edge
Global delivery, caching, and fast iteration loops
Docker
Consistent builds and local parity with production
Kubernetes (when needed)
Workloads, scaling, and service orchestration
CI/CD
Staging, previews, automated checks, safe rollouts
CDN & caching
Cache headers, ISR/SSR strategy, revalidation
Secrets & env
Secure handling, rotation strategy, least privilege

Security Engineering

Hardened by default: access control, data protection, and safe operational practices.

RLS / RBAC
Row-level security and role-based permissions
OWASP alignment
Input validation, auth flows, common vulnerability defense
Secure headers
CSP, HSTS, frame guards, and content policies
Rate limiting
Abuse prevention + bot mitigation patterns
Dependency hygiene
Audit, pinning, and upgrade strategy
Incident readiness
Logs, alerts, and audit trails that help in reality

Observability & Reliability

Know what’s happening in production: trace issues fast, ship fixes with confidence.

Structured logging
Searchable logs with request context
Metrics + SLOs
Latency/error budgets aligned to business outcomes
Tracing
Request-level visibility across services
Alerting
Actionable alerts with runbooks, not noise
Uptime checks
Synthetic probes and user-centric monitoring
Performance profiling
Spot CPU/IO hotspots and fix bottlenecks

Testing & Quality

Guardrails that keep velocity high without shipping breakage.

Unit tests
Fast logic validation and regression prevention
Integration tests
DB/API coverage for real workflows
E2E tests
Critical paths validated (auth, payments, forms, dashboards)
Linting + formatting
Consistency across teams and codebases
Type-safe APIs
Prevent mismatches between client and server
Release checks
Build gates and smoke tests before rollout

Developer Platform

Tooling that makes teams faster: clean DX, predictable environments, documented flows.

Monorepo patterns
Shared packages, consistent tooling, clean boundaries
Code owners
Clear ownership and review discipline
Docs that survive
Runbooks, setup guides, architecture notes
Feature flags
Ship safely and control blast radius
Local parity
Dev env close to production behavior
Migration playbooks
Incremental upgrades without downtime

Systems & Embedded

Low-level systems where stability matters: kiosks, locked-down environments, and edge devices.

Linux (Arch-based)
Custom images, read-only root, hardened boot paths
Rust / C++
Performance-critical services and native tooling
Systemd
Reliable service supervision and startup orchestration
FFmpeg / WebRTC
Low-latency streaming and real-time media pipelines
Device management
Remote logs, updates, and fleet visibility
Offline-first design
Works in poor networks with sync patterns

Privacy & Access Control

Data handling and access patterns designed to be safe under real-world constraints.

Least privilege
Scopes, roles, and minimal access tokens
Audit trails
Who did what, when, and why — traceable actions
PII minimization
Collect what you need, protect what you store
Encryption strategies
At-rest and in-transit protection
Secure auth flows
Session hardening, rotation, and safe redirects
Policy enforcement
Guardrails for sensitive operations

Tooling & Automation

Pragmatic automation that reduces manual work without creating fragile systems.

n8n / Webhooks
Automate ops and business workflows with visibility
Worker patterns
Non-blocking heavy tasks and scheduled jobs
Data pipelines
Transform, validate, and sync across systems
Scrapers (robust)
Retries, dedupe, and breakage resistance
Notifications
Alerting + messaging tied to real events
Runbooks
Operational clarity when something fails

Configuration & Hardening

Baseline setups that keep systems stable over time — fewer surprises, easier maintenance.

Caching strategy
Edge caching, revalidation, stale-while-revalidate
Build optimization
Tree-shaking, split points, and smaller bundles
Image strategy
Correct sizes, formats, and priorities for LCP
CSS discipline
Avoid render blocking, keep critical CSS lean
Runtime checks
Guard against bad inputs and invalid states
Security headers
CSP + hardened defaults

Built for scale.

If you want this kind of stack applied to your product — with performance budgets, observability, and security baked in — we can scope it quickly and ship it cleanly.

Clean delivery. Clear handoff.