Explore Testing & Validation
Automotive Testing Services: HIL, ADAS, Diagnostics and Cybersecurity
MIL/SIL/HIL, ADAS scenarios, network and diagnostics, ISO 26262 verification and R155/R156 OTA testing for OEMs and Tier-1s.
Embedded Software Testing Services
Unit, integration and system testing, MISRA static analysis, structural coverage and CI on target for safety and security standards.
Semiconductor Testing Services: Validation, Characterization and ATE
Post-silicon validation, characterization, ATE programs on V93000, UltraFLEX and J750, board-level test and test time reduction.
Defence & Aerospace Testing: DO-178C Verification and MIL-STD Test Support
DO-178C and DO-254 verification, MIL-STD-810H and MIL-STD-461 test planning, pre-compliance, ATP/ATR and qualification support.
Embedded Test Automation Services
Frameworks in pytest, Robot Framework, CAPL, TestStand and AutomationDesk, bench automation and CI pipelines for embedded products.
HIL Test Bench Setup: Specification, Integration and Commissioning
HIL rigs from I/O specification to commissioning: plant models, fault insertion and restbus on dSPACE, NI, Vector and Speedgoat.
Automotive and Embedded Cybersecurity Testing Services
ECU and IoT fuzzing, penetration testing and vulnerability scanning for R155, ISO/SAE 21434, IEC 62443-4-2 and the EU CRA.
Independent Verification and Validation (IV&V) Services
Verification by engineers separate from development, for DO-178C, DO-254, ISO 26262 and IEC 61508 independence requirements.
Managed Testing Services for Embedded Products
Stalwart-run test teams with agreed scope, service levels and reporting that scale with your embedded release cycles.
Testing by domain
Each domain has a testing page with deliverables, tools and FAQs, plus deeper pages for the most specialised work.
Automotive testing
MIL/SIL/HIL, ADAS scenario testing, CAN FD, Automotive Ethernet and UDS diagnostics, ISO 26262 verification and R155/R156 evidence. See automotive testing and HIL/SIL testing.
Embedded software testing
Unit, integration and system tests, MISRA C static analysis, statement, branch and MC/DC coverage and CI on target. See embedded software testing.
Semiconductor testing
Bring-up, characterization, ATE programs on V93000 and UltraFLEX and test time reduction. See semiconductor testing, post-silicon validation and ATE test engineering.
Defence & aerospace testing
DO-178C requirements-based testing and coverage, DO-254 verification, MIL-STD-810H and MIL-STD-461 test planning. See defence & aerospace testing and MIL-STD-810/461 test support.
Test automation & HIL benches
Test automation frameworks and CI pipelines for embedded targets, and HIL test bench setup from I/O specification to commissioning.
Cybersecurity testing & IV&V
Cybersecurity testing with fuzzing and penetration tests, and independent verification and validation where a standard requires independence.
How we engage for testing
Three routes, chosen per programme. Many programmes combine them, for example a managed regression team plus placed HIL engineers.
Test project
We own a defined scope, such as a HIL regression suite, a DO-178C coverage closure or an ATE program release, against agreed work products and acceptance criteria.
Managed test team
A Stalwart-run team works to an agreed scope, service levels and reporting, and scales with your release cycle. See managed testing services.
Test engineers placed
HIL, automation, validation or ATE engineers join your team under your leads and processes, on contract, contract-to-hire or permanent terms. See hire test engineers.
What a test engagement delivers
Whichever route you choose, these are the work products an assessor, customer or certification authority will ask for.
- Test strategy: test levels, methods, environments, entry and exit criteria, and which requirements are verified where across the V-model.
- Test plans and specifications: test cases with inputs, expected results and pass criteria, structured to ISO/IEC 29119 or your own templates.
- Bidirectional traceability from requirements to test cases and results, kept in your ALM tool such as Polarion, codebeamer, IBM DOORS Next or Jama Connect.
- Test automation: scripts, libraries and CI jobs that rerun the suite on every build or nightly.
- Coverage evidence: requirements coverage plus statement, branch or MC/DC structural coverage where the standard asks for it.
- Test reports: results, defects, deviations and open issues, in a form that feeds the safety case, certification data or production release.
Domain, scope, standards and evidence
| Domain | What we test | Standards | Typical evidence |
|---|---|---|---|
| Automotive | ECU software at MIL, SIL and HIL level; ADAS functions; CAN FD, Automotive Ethernet and UDS diagnostics; OTA updates | ISO 26262, ISO 21448 (SOTIF), ASPICE, ISO/SAE 21434, UNECE R155, UNECE R156 | Test specifications, HIL reports, coverage reports, ASPICE SWE.4-SWE.6 and SYS.4-SYS.5 work products, cybersecurity test reports |
| Embedded & industrial | Firmware and application software, drivers, communication stacks, secure boot and update | IEC 61508, IEC 62304, IEC 62443-4-2, MISRA C, EU Cyber Resilience Act | Unit and integration test reports, MISRA compliance report, coverage report, vulnerability test results |
| Semiconductor | First silicon, high-speed interfaces, parametrics across PVT corners, production test programs | IEEE 1149.1 (JTAG), IEEE 1687, STDF, AEC-Q100 | Validation plan and report, characterization data, released ATE program, correlation and yield data in STDF |
| Defence & aerospace | Airborne software, FPGA and ASIC logic, LRUs and subsystems for environmental and EMI/EMC qualification | DO-178C, DO-254, MIL-STD-810H, MIL-STD-461H, MIL-STD-461G | Verification cases, procedures and results, structural coverage analysis, test plans and procedures, ATP/ATR, pre-compliance data |
Testing trends shaping 2026 programmes
Regulation has made test evidence a market-access condition. UNECE R155 and R156 have applied to all new vehicles under EU type approval since July 2024, so cybersecurity and software-update testing sits in the type-approval file. Under the EU Cyber Resilience Act, reporting of actively exploited vulnerabilities and severe incidents has applied since 11 September 2026, and most other obligations, including conformity assessment, apply from 11 December 2027.
ADAS validation volume is rising. Euro NCAP's 2026 protocols are its biggest overhaul since 2009, adding ADAS robustness, HMI and driver-monitoring tests, and test-equipment vendor AB Dynamics reports more than 1,200 ADAS test variations, roughly double the previous cycle. Scenario-based methods built on ISO 34502 and ASAM OpenSCENARIO keep that volume manageable in simulation.
HIL remains the final gate before the vehicle, even as virtual ECUs move regression into CI. One estimate from Global Market Insights puts the HIL testing market at $1.27 bn in 2025, rising to $2.61 bn by 2034; MarketsandMarkets gives a lower $1.78 bn for 2030. In defence, MIL-STD-461H superseded 461G on 17 April 2026, although many contracts still call up 461G.
AI in testing is mostly at pilot stage. The World Quality Report 2025-26 (Capgemini and OpenText) finds 89% of organisations piloting or deploying generative AI in quality engineering, but only 15% have scaled it enterprise-wide. On safety-related work, AI output such as drafted test cases or log triage needs the same review as any other test artefact.
Related work
Case studies →Fuzz and penetration testing an industrial gateway for the Cyber Resilience Act and IEC 62443-4-2
A recurring security test cycle for an industrial gateway: fuzzing, penetration tests and SBOMs mapped to IEC 62443-4-2 and the CRA.
Planning MIL-STD-810H and MIL-STD-461 pre-compliance for an indigenised rugged subsystem
Tailoring MIL-STD-810H and 461 requirements, writing procedures, running pre-scans and preparing a rugged LRU for its accredited lab campaign.
Closing DO-178C structural coverage with independent verification for a DAL B component
Independent verification closes statement and decision coverage, coupling analysis and tool qualification for a DAL B software component.
Latest insights
All insights →Building an engineering or test team for a mid-market GCC in India
Ramp waves, dedicated team vs Build-Operate-Transfer, governance and the measures that matter for a mid-market GCC's engineering or test team.
Euro NCAP 2026 ADAS Testing: What Changes for SIL/HIL Test Plans and Test Capacity
Euro NCAP 2026 multiplies ADAS test variations. How to restructure SIL/HIL plans around ISO 34502 and OpenSCENARIO, and plan the capacity.
Automotive Cybersecurity Penetration Testing for R155: Fuzzing, OTA and ISO/SAE 21434 Evidence
What R155, R156 and ISO/SAE 21434 test evidence suppliers need, and where fuzzing, penetration testing and OTA tests fit.
Frequently asked questions
Do you provide test engineers, test benches, or both?
Mainly engineers and test capability. Our engineers work on your HIL rigs, lab instruments and testers, or on benches you procure, and we can specify, integrate and commission a new bench through HIL test bench setup. Bench hardware is normally bought from the platform vendor and owned by you, which keeps calibration, licences and audit records in your hands.
Do you operate an accredited test laboratory?
No. For accredited EMI/EMC, environmental or safety testing we prepare you for the lab of your choice: test plans, tailoring, pre-compliance checks on development hardware, test procedures, witness support and failure diagnosis. The accredited lab runs the formal test and issues the report. See defence & aerospace testing.
What is the difference between SIL, HIL and vehicle-level testing?
SIL testing runs production code, or a virtual ECU, on a PC against simulated inputs, so it is fast and fits CI. HIL testing runs the real ECU against a real-time plant model with real I/O, which exposes timing, electrical and diagnostic behaviour. Vehicle-level testing confirms behaviour with real sensors, actuators and environment, and costs the most per test case.
Do we still need HIL if we already run virtual ECUs in CI?
Usually yes. Virtual ECUs move much of the functional regression earlier and free HIL capacity, but they do not exercise the real microcontroller, I/O drivers, analogue signals or electrical faults. HIL remains the gate for I/O, diagnostics, fault injection and timing before vehicle tests. The split is set in the test strategy, requirement by requirement.
What deliverables should a V&V partner provide for an ISO 26262 audit?
At minimum: a verification plan, test specifications traced to safety requirements, test results with deviations, unit-level structural coverage reports with justification for gaps, integration and HIL test reports, tool confidence evidence where needed, and a defect record. These feed the safety case and the functional safety assessment. See ISO 26262.
Can AI be used in testing for safety-critical projects?
Yes, with limits. AI can help draft test cases from requirements, suggest boundary values and cluster failures in long logs, but every output is reviewed like an engineer-written artefact. Tools whose output is relied on as certification evidence need qualification under DO-330 or a tool confidence assessment under ISO 26262-8. The World Quality Report 2025-26 shows most organisations are still piloting.
Can testing be delivered from Bengaluru when the hardware is in Europe or the US?
Often. Test design, automation, SIL execution and analysis run from Bengaluru, and HIL or lab campaigns run remotely through a secured connection, with local staff handling cabling and hardware changes. Where remote access becomes the bottleneck, a mirrored bench or engineers placed on site are the usual answers. Export-controlled work is scoped case by case before anything starts.
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