Founder & Principal Engineer (Jay)
System ownership, architecture, and critical decisions.
- Technical direction and architecture
- Client partnership and delivery
- Owns the parts that carry risk
About
Turning ideas into shipped product.
BigJump is a UK studio combining experienced engineering leadership with AI-accelerated delivery. We design the architecture, build the product, and take it through to launch - so you can stay focused on what it needs to achieve.
The studio
Founded 2003. Based in the UK - serving clients globally.
Led by Jay McGuinness, a senior engineer with nearly three decades of delivery experience, we combine deep technical judgement with a modern, AI-accelerated build process. The result is a delivery model that pairs human decision-making where it matters with automation where it compounds.
Our AI systems handle the heavy lifting behind the scenes, from scaffolding and test infrastructure to repetitive implementation patterns. That frees us to focus on architecture, product thinking, and the moments that actually shape outcomes.
Clients work directly with the people making the decisions. No layers, no dilution, no handoffs that lose intent.
We partner with teams who value clarity, momentum, and high standards. When the problem is meaningful and the ambition is real, we lean in.
Founded
2003
Based
UK - working globally
The studio's founder holds AWS's Solutions Architect certification, relevant when your project lives on AWS — useful when it doesn't.
The team
A team of experts. Human and AI.
BigJump is a small studio with deep reach.
Jay leads every engagement — direction, architecture, the client relationship. Around him is a team of experts, both human and AI. Senior specialists we bring in when the work calls for it. A coordinated set of AI agents handling the rest. Each project gets exactly the team it needs — no fixed headcount, no idle hands, no handoffs that lose intent.
You always work with the person making the decisions. The right capability shows up at the right moment.
Design & Architecture (Atlas)
Shaping the system before it's built.
- Architecture and data modelling
- Design systems and structure
- Long-context reasoning across the codebase
Powered by Claude (Anthropic)
Build & Integration (Forge)
Turning decisions into working systems.
- APIs, components, and services
- Third-party integrations
- Applying patterns consistently across the codebase
Powered by Codex (OpenAI)
Review & Validation (Lens)
Ensuring quality before anything ships.
- Visual comparison against designs
- Long-form spec and transcript review
- Evaluation harnesses for AI features
Powered by Gemini (Google)
Infrastructure & Runtime (Orbit)
Where the system runs and scales.
- Cloud architecture and environments
- Deployment pipelines and runtime stability
- Observability and operational readiness
Human-led, AI-assisted
Data & Intelligence (Signal)
Making data usable and meaningful.
- Data modelling and flow design
- RAG and AI feature integration
- Structuring data for real-world use
Powered across models
Quality & Resilience (Sentinel)
Guarding what matters in production.
- Test strategy and coverage
- Edge cases and failure modes
- System resilience under load
Human-led, AI-assisted
Security & Scanning (Aegis)
Continuously scanning what we build and run.
- Application security scanning (SAST and DAST)
- Infrastructure and cloud-config monitoring
- Dependency and runtime vulnerability detection
Human-led, AI-assisted
External Specialists (Partners)
Specialist firms we bring in when the work calls for them.
- Penetration testing and security audits
- Specialist design partners for brand and product
- Engaged per project, not on retainer
Vetted partner network
How we use AI
Humans in the loop. Agents on the keyboard.
Human judgement. Accelerated execution.
Decisions stay human. AI handles the surrounding work: research & exploration, repetition, testing & validation.
Nothing ships without review. The agents are in the loop - not in charge.
What we believe
Three things that shape every project.
→Experienced hands
Every critical decision is made by people who’ve delivered at this level before. No learning on your time, no passing work down the chain.
◐Calm, not loud
We don’t substitute urgency for progress. No late-night noise, no artificial pressure. Just considered, well-communicated work that lands when it should.
△Plain-spoken
You’ll hear what’s known, what isn’t, and what’s being resolved next. Clear thinking, stated simply.