Flashupluminous Logo
ISO 27001 Certified API Testing Specialists

Built on Real Testing Experience

We started Flashupluminous because we kept seeing businesses struggle with API failures and integration headaches that could have been prevented with proper testing.

How We Actually Got Started

Back in 2019, our founders were working as consultants and kept encountering the same frustrating pattern. Companies would call us after their systems had already broken down – payment processors failing during peak sales, customer data not syncing between platforms, or third-party integrations suddenly stopping without warning.

The thing is, most of these failures weren't mysterious. They happened because nobody was properly testing the connections between different systems. Sure, individual applications worked fine, but the moment they needed to talk to each other – that's where things fell apart.

We realized there was a real gap in the market. Lots of companies offered general software testing, but very few specialized in the specific challenges of API and integration testing.

So we decided to focus entirely on that problem. Instead of trying to be everything to everyone, we'd become the team businesses could rely on when they needed to make sure their systems actually worked together properly.

Team collaboration on testing strategies

The People Behind Your Testing

We're not a huge agency with dozens of account managers. You'll work directly with the people who actually do the testing – and that makes all the difference when complex integration issues come up.

Sienna Kellerman, Lead Integration Architect

Sienna Kellerman

Lead Integration Architect

Sienna has spent the last eight years untangling complex API integrations for e-commerce platforms and fintech companies. She has an unusual talent for spotting potential failure points that most people miss during initial testing phases.

Thea Norberg, Testing Operations Director

Thea Norberg

Testing Operations Director

Before joining us, Thea built the testing infrastructure for three different SaaS startups. She's particularly good at creating automated testing frameworks that catch integration problems before they affect real users.

API

REST & GraphQL Testing

We test API endpoints under various conditions to ensure they handle real-world usage patterns and edge cases properly.

SYN

System Integration

Our team validates how different software systems communicate and share data, identifying potential points of failure.

AUT

Automated Testing

We create testing scripts that can run continuously, catching integration problems as soon as they develop.

What Drives Our Testing Approach

Practical Focus

We test for real-world scenarios, not just ideal conditions. Your systems need to work when traffic spikes or third-party APIs have hiccups.

Clear Communication

When we find issues, we explain them in plain language with specific steps to fix them. No confusing technical jargon or vague recommendations.

Prevention-First

It's much cheaper to catch integration problems during testing than after your customers start experiencing failures.

Long-term Thinking

We design tests that grow with your business, so you're not starting from scratch every time you add new integrations.

"Our goal is simple: make sure your systems work together as reliably as they work individually. When your APIs and integrations are properly tested, you can focus on growing your business instead of worrying about technical failures."

Professional testing environment and tools
Integration testing workflow documentation
Quality assurance process implementation

Ready to Test Your Integrations?

Let's discuss your specific testing needs and figure out the best approach for your systems. We can usually spot potential issues within the first conversation.

Start the Conversation