Build Faster.
Scale Smarter.

Senior engineers building production-grade software for SaaS teams: developer APIs, scalable cloud backends, and compliance-ready e-invoicing — with clean handover and predictable operations.

Core focus: SaaS platforms, developer APIs, cloud infrastructure, e‑invoicing (Peppol), broadcast/OTT systems, and crypto trading automation.

  • Production-first: CI/CD, tests, observability
  • APIs developers love: OpenAPI, SDKs, webhooks
  • EU compliance: Peppol / UBL / EN 16931
  • Broadcast/OTT: playout automation, ingest, monitoring
  • Crypto trading bots: exchange integrations, risk controls, backtesting
6Core verticals
20+Yrs engineering
4Languages
EU+USCoverage

What We Do

Our Services

From idea to production deployment — we cover the full software lifecycle across six specialized verticals, from SaaS and APIs to broadcast and crypto trading automation.

SaaS Platform Development

We architect and ship multi-tenant SaaS products from scratch. Tenant isolation at the data layer, subscription billing, role-based access control, feature flagging, and onboarding flows designed to reduce time-to-value. We don't hand off prototypes — we deploy systems that handle real users on day one.

GoMulti-tenantRBACStripePostgreSQL

Developer Tools & APIs

We build the infrastructure developers depend on: RESTful and gRPC APIs with OpenAPI documentation, SDK generation, webhook event systems, rate limiting, and developer portals. If your product's growth depends on third-party integrations, we'll make your API something developers actually want to use.

RESTgRPCOpenAPIWebhooksGo / Rust / C#

Cloud Backend & Infrastructure

Cloud-native backends that scale horizontally. Infrastructure-as-Code with Terraform, containerised microservices on Docker, service discovery with Consul, zero-downtime deployment strategies, and PostgreSQL + Redis data layers tuned for production load. Deployable on GCP, DigitalOcean, or any Linux VPS.

GCPDigitalOceanTerraformDockerRedis

E-Invoicing & Compliance APIs

Peppol BIS Billing 3.0 end-to-end: UBL 2.1 document generation, EN 16931 semantic validation, and certified Access Point connectivity. Purpose-built for Belgian KBO-registered businesses and EU SMEs facing mandatory e-invoicing deadlines. Available as a white-label API or fully managed SaaS.

PeppolUBL 2.1EN 16931BelgiumEU

Broadcast Software

Practical tools for TV and OTT: live and on‑demand video streaming, multi‑channel playout automation, ingest pipelines and monitoring dashboards that keep 24/7 channels on air. We also build operator-friendly UIs for scheduling, metadata, QC checks and safe failover flows — designed to reduce on-air risk and speed up daily operations.

Video Streaming Playout Systems Ingest Systems Monitoring Automation

Crypto Trading Systems

Execution engines, exchange integrations, and risk controls for automated crypto trading. We design and implement trading bots, portfolio rebalancers, and market data pipelines with clear guardrails: position sizing, circuit breakers, backtesting harnesses, and monitoring dashboards.

Crypto Trading Bots Exchanges Risk Controls Backtesting

Who We Are

About Puull

Senior engineers shipping production systems across SaaS, APIs, cloud infrastructure, and compliance — with clean handover and predictable operations.

What you get
  • A clear technical plan and a prioritized backlog
  • Production-ready delivery (CI/CD, tests, observability)
  • Clean handover: docs, runbooks, dashboards, alerts
Best fit for
  • SaaS teams scaling features without sacrificing reliability
  • Products that depend on third‑party integrations and APIs
  • EU businesses preparing for mandatory e‑invoicing
20+Years exp.
3Continents
24/7Systems built
Core stack
CRustGoC# PostgreSQLRedis DockerTerraformLinux AWSAzureGCPDigitalOcean gRPCPeppolNomad
Production-first

Designed to run, monitor, and recover.

Predictable delivery

Clear scope, weekly demos, no surprises.

Operability

Docs, runbooks, dashboards, alerts — by default.

How We Work

A production-first delivery model

You get a clear plan, a working system, and operational handover — not slideware. Typical engagements start with a short technical audit and end with measurable outcomes.

Step 1

Discovery & Audit

We map your goals, constraints, and risk areas. Output: an architecture plan, backlog, and an execution timeline.

Step 2

Build & Ship

We deliver production-ready services: CI/CD, tests, observability, and safe releases. No throwaway code.

Step 3

Operate & Handover

Runbooks, dashboards, alerts, and knowledge transfer. Your team can operate the system with confidence.

Proof

Outcomes you can measure

A few concrete outcomes beat a long list of buzzwords. Add your case studies later — this section is ready for logos, quick wins, and links.

SaaS teams Developer platforms Cloud infrastructure Broadcast / OTT EU compliance
SaaS

Multi-tenant foundation + billing

A fast-growing product needed tenant isolation and a predictable release pipeline before onboarding new customers.

  • Designed data boundaries and RBAC
  • Implemented subscription billing + invoicing
  • CI/CD + automated tests + dashboards
Outcome Safer releases and faster onboarding with fewer operational surprises.
APIs

Developer-first API + webhooks

Integrations were hard to maintain. The goal was a stable contract, reliable events, and good docs.

  • OpenAPI spec + versioning strategy
  • Webhook events + retries + idempotency
  • Rate limiting + auth hardening
Outcome Lower integration support load and a smoother partner onboarding experience.
Compliance

E‑invoicing pipeline readiness

An EU business needed an e‑invoicing pipeline that can generate, validate, and integrate documents safely.

  • UBL 2.1 generation + templates
  • EN 16931 validation + reporting
  • Integration design + observability
Outcome A compliant pipeline design ready for implementation and rollout planning.
Reliability

Production readiness by default

Monitoring, alerting, and deploy safety are built-in, so scale doesn't turn into firefighting.

Dashboards + alerts Runbooks Safe releases
Speed

Faster iterations, fewer rewrites

You ship improvements safely with a maintainable codebase and predictable release process.

CI/CD Tests Docs

Engagements

Choose a starting point

A clear scope leads to faster results. These are common starting points — we can tailor any of them.

Architecture & Risk Audit

1–2 weeks

A short audit to map bottlenecks, reliability risks, and compliance gaps. You get a concrete plan and prioritized backlog.

Architecture notes Backlog Timeline

Compliance Delivery (E‑Invoicing)

Project-based

Peppol / UBL / EN 16931: from document generation to validation and integration. Designed for EU deadlines.

Validation Integration Operate

FAQ

Common questions

Do you work with existing teams?

Yes. We can embed with your team, or deliver a scoped project with clean handover.

What do you need to start?

A short call, access to relevant repos/docs, and a clear success metric. We’ll do the rest.

Where are you based?

We operate across EU and North America, with legal presence in the US and EU.

Get in Touch

Let's Build Something

Whether you're launching a SaaS, scaling a backend, or navigating e-invoicing compliance — describe your challenge and we'll respond with a concrete plan, not a sales pitch.

Ready to ship?

For now, please email us at info@puull.com

Headquartered Delaware, USA · Brussels, Belgium
Entity Puull Art LLC · EIN registered
Response time Within 1 business day