Know what you're buying before you sign.
The deal model assumes the technology works. Sphere checks: architecture, code, security, infrastructure and the team behind it, with every finding priced in dollars for the closing table. Independent findings in 4 weeks or less.
Request a free scoping call
Request a free scoping call
No deck required. Describe the deal or the system, and we'll scope the engagement, quote a fixed price and tell you how fast we can move.
Your scoping call is with one of oursenior diligence engineersThe board deck says everything works. Prove it before you sign.
Most technical risk in a deal isn't hidden on purpose. It has just never been priced. The data room shows what the seller chose to document; diligence shows what the code and the team actually do.
Every finding lands on one ledger, in dollars.
See a findings ledgerRisk your deal committee can actually price.
No engineering opinions. Every finding comes with a remediation cost estimate and a timeline, so the investment committee, the board and the lawyers work from the same numbers.
- Ranked by severity and cost to fix
- Pressure-tested with the target's team before it's reported
- Ready for price, warranties or escrow negotiations
Illustrative. Based on 200+ real Sphere TDD engagements. Individual findings vary by company size and complexity.
Engineers who build systems review the one you're buying.
21 years building and rescuing production systems. The same senior engineers run the assessment and deliver the 100-day plan.
Built products and led high-scale engineering teams at HP Software, Gett and Google before leading Sphere's technology practices.
A language-agnostic engineer with deep software architecture knowledge, leading a team of 100+ developers, analysts, designers and QA.
Led high-scale operational systems and modernization at Gett and bp pulse. Now builds automation-driven platforms and intelligent workflows.
More than a decade designing and scaling software from first MVP to enterprise-level systems across FinTech, transportation and real-time streaming.
In IT since 1999, with a focus on financial platforms: billing, lending, forex and pricing and fee calculation systems.
Buying, selling or checking your own house.
The engagement scopes to the decision you're making. Pick your side.
An unbiased risk read before the wire goes out.
For PE and growth equity funds validating a platform or add-on thesis, corporate development teams pricing integration risk, VCs assessing AI-first companies and lenders who need independent technical assurance.
“Could this platform handle 5x load without a ground-up rewrite?” That was the question Betr needed answered before closing.
- A dollar-denominated risk register
- A scalability and security verdict
- A 100-day post-close plan from the same specialists
- An executive read-out for your investment committee
Find it before the buyer's team does.
Many founders engage us 60–90 days before launching a sale process. You get the runway to fix what a buyer's technical team would otherwise find first, and the credibility of an independent report.
“It shortened the due diligence phase by weeks.” CEO, Series C FinTech company (sold 2024)
- The findings a buyer would raise, before they raise them
- A remediation plan sized to your timeline
- An independent report to share in the data room
- Fewer price chips and cleaner LOI terms
Before the risk becomes the headline.
For CEOs who want an independent read on their own technology organization, CTOs quantifying technical debt to win the remediation budget, and boards asking what AI-generated code has entered production.
- An independent read on your own stack
- A costed technical debt register
- Evidence for the remediation budget
- A sequenced plan for what to fix first
One methodology. Six kinds of risk.
A single checklist can't see six kinds of risk. Every engagement scopes to the practice areas your decision depends on.
Software & tech-enabled diligence
Architecture, SDLC, InfoSec, engineering org and business continuity, for companies whose product is the technology.
IT diligence
Infrastructure, InfoSec and enterprise systems like ERP and CRM, for carve-outs and operators who run on technology without selling it.
Technical debt diligence
A costed register of aging architecture, blocked migrations and brittle integrations: the compounding interest on a deferred roadmap.
AI diligence
Model provenance, data rights, evaluation rigor and cost-to-serve economics: whether the AI in the deck matches the AI in production.
Diligence on AI-built systems
Uneven review coverage, license and provenance gaps in code written by AI agents. How it was built, not just what was built.
Product diligence & growth
Roadmap credibility, product management maturity and retention signals: whether the technology can carry the growth plan the deal is priced on.
Weeks, not quarters. Evidence, not opinions.
The same four-phase discipline on every engagement, scoped to the decision, the industry and the timeline in front of you.
Request a free scoping call- Week 1
Scope & access
We define the decision at stake, agree the practice areas and secure access to code, systems and the people who run them. NDA within 48 hours.
You getA fixed scope, a fixed price and access in place. - Week 2
Deep assessment
Hands-on analysis across the agreed areas, driven by evidence and direct code review, not interviews alone.
You getFindings backed by the code, not the pitch. - Week 3
Quantify & validate
Findings are costed, risk-ranked and pressure-tested with the target or internal team before they're reported.
You getA risk register priced in dollars. - Week 4
Report & roadmap
A defensible findings report and a sequenced remediation roadmap, including a 100-day post-close plan when the deal closes.
You getThe report, the roadmap and an executive read-out.
What lands in your inbox in week four.
Real findings. Decisions changed.
Diligence Sphere ran for acquirers and investors, from the published case studies.
load benchmark the platform was tested against
Betr needed a binary answer before closing.
Could the real-time micro-betting platform handle five times its user load without a ground-up rewrite? A five-specialist team delivered the scalability verdict, a prioritized technical debt register and a CI/CD maturity score.
Read the Betr casesecurity and control domains reviewed
A regulatory risk map, not just a tech risk map.
Five parallel workstreams covered infrastructure, system design, data, security controls and cybersecurity posture against Canadian privacy and data-residency rules, so Marble could negotiate with quantified gaps.
Read the Marble caseof post-acquisition rework avoided (estimated)
The findings rewrote the deal terms.
Four workstreams on SellersCommerce surfaced architecture fragility, onboarding friction and infrastructure scaling costs. Careismatic renegotiated with enhanced representations and warranties and a technology escrow.
Read the Careismatic caseto an impartial findings report
A fast answer that reset the valuation.
For an angel investor weighing a five-person Tel Aviv startup, Sphere checked references, the books, customers and the code. The investor funded, on revised terms.
Read the seed-round caseWant results like these?Tell us about your project. A senior architect replies within one business day.
Request a free scoping callFrom the people who closed the deal.
Deal teams and founders on what the findings changed.
“Sphere caught $3.2M in infrastructure remediation costs our financial team had no visibility into. That single finding changed our valuation offer and saved us from a costly post-close surprise.”
“The 100-day plan delivered with the TDD Assessment was more actionable than anything our integration team had produced internally. We've used Sphere on three deals now.”
“As a founder preparing for a sale, having Sphere on our side gave us credibility with every buyer's technical team. It shortened the due diligence phase by weeks.”
Independent, fast and priced in dollars.
No portfolio companies, no vendor relationships. We don't sell implementation services to companies we assess.
Every finding comes with a remediation cost estimate and timeline.
NDA executed and engagement scoped within two business days, built for deal timelines.
The specialists who found the risk write the post-close plan. No handoff.
- Architecture, scalability and performance
- Code quality, dependencies and technical debt
- Security, data protection and compliance
- Infrastructure, CI/CD and cloud cost
- Team, key-person risk and roadmap credibility
- AI/ML provenance, data rights and AI-built code
21 years of engineering. Our top 20 clients stay 7+ years.
Independent recognition for the AI work Sphere delivers, from Clutch reviewers to global AI award juries.
Top Artificial Intelligence Company · US 2025
Top AI Code Generation Company · US 2025
Top Chatbot Company · US 2025
Top Recommendation Systems Company · US 2025
Top AI Text Generation Company · Florida 2025
Top App Development Company · Manufacturing 2025
Global Generative AI Award · 2026 Winner
Best in AI for Documentation Validation · 2026
Best in AI-Powered Invoice Auditing · 2026
Global Recognition Awards · 2026
Global Tech Award Winner · 2026
Most Innovative Technology Consulting Firm · 2026
Technical due diligence, answered directly.
Don't see yours? Ask it on the scoping call.
Request a free scoping callWhat's included in a Sphere TDD assessment?
A written findings report covering code quality, architecture, security, compliance and AI/ML readiness; a dollar-denominated risk register with remediation cost estimates; a 100-day post-close execution plan; and an executive read-out for your investment committee or board.
How long does technical due diligence take?
A standard engagement runs four weeks from kickoff to final report. Narrow-scope assessments, such as a single practice area like technical debt or AI diligence, can complete in two to three weeks. Timelines are fixed at the scoping call, before work begins.
What's the difference between software diligence and IT diligence?
Software and tech-enabled diligence assesses companies whose product is technology: architecture, SDLC and the full engineering organization. IT diligence assesses companies that run on technology, focused on infrastructure, InfoSec and enterprise systems like ERP and CRM.
Do you do sell-side TDD for founders?
Yes. Many founders engage us 60–90 days before launching a sale process. A sell-side assessment identifies issues before a buyer's team finds them, which means fewer price chips and cleaner LOI terms.
Is Sphere TDD truly independent?
Yes. We have no financial relationship with target companies or their investors, and we do not sell implementation services to companies we assess, before, during or after the engagement.
What does it cost?
It depends on the size of the target and the practice areas in scope. We quote a fixed price at the scoping call, before any work begins.
Price the technology risk before you sign.
Book a free scoping call. You'll leave with:
- A fixed scope and a fixed price
- The practice areas your deal needs
- A timeline that fits your close date
Request a free scoping call
Tell us about the deal or the system. We'll reply within one business day, and the NDA can be signed within 48 hours.
Your scoping call is with one of oursenior diligence engineers