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Software Testing

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Software testing that catches defects before your users do

A UK-based software testing team for mid-market enterprises. Functional, performance, security, accessibility and regression testing, automated where it pays back and manual where it does not, delivered by senior SDETs (Software Development Engineers in Test) under ISO 27001 controls.

Book a test-strategy call

Free 30-minute test-strategy call · UK senior SDETs · First test results within 14 days

Test pyramid · running
Tests today
12,840
across PRs
Pass rate
98.4%
+0.6 WoW
Bugs caught
42
pre-release
Unit (fast)
Integration
E2E (UI)
Every PR testedWCAG 2.2 AA
94%

Median automated test coverage on stabilised apps

14 days

From kickoff to first regression report

ISTQB

Certified UK test engineers on every shift

ISO 27001

Certified information security controls

The pattern we see

Most UK testing teams are not short of bugs. They are short of confidence to release.

Three problems show up in every software testing engagement we replace. If any of these sound familiar, your current release cadence is paying for it.

Untested code reaches production

Unit tests pass but no one runs the end-to-end suite before deploy. Production incidents become your QA. Customers find the bugs your build did not.

Automated regression suite gating every merge. Median defect-escape rate under 4% within 90 days of engagement start.

Manual regression eats every sprint

Half the QA team spends two weeks each release running the same manual checks. Velocity drops. Senior testers leave for places that automate.

Test pyramid built: unit + API + UI, with the right ratio. Most clients cut regression time from 2 weeks to under 4 hours.

No test data, no test environments

Tests fail randomly because data is stale, environments drift, and no one owns the seed scripts. Flaky tests get muted. Quality steadily erodes.

Synthetic + masked-production test data, ephemeral environments, deterministic seed scripts. Flaky-test rate under 1%.

Four core capabilities. One UK QA team.

What our Software Testing services include.

Automated functional, performance, security and accessibility testing, plus the CI/CD integration to run them on every commit, delivered as one accountable service by UK senior SDETs.

Test automation pyramid

80% automated

Unit + API contract + UI end-to-end, in the right ratio for your stack. Playwright, Cypress, Selenium, Postman, Pact, JUnit, pytest, RSpec.

Performance, load & security testing

JMeter + ZAP

k6, JMeter, Gatling for load. OWASP ZAP, Burp Suite for security. Realistic user models, peak-load simulations and guidance per finding.

CI/CD & test orchestration

Every PR

Tests gate every merge in GitHub Actions, GitLab CI, Azure DevOps, Jenkins. Parallel execution, sharding, smart retries, deterministic seeding.

Coverage, reporting & accessibility

WCAG 2.2 AA

Coverage dashboards (SonarQube, Codecov), test-trend reports, WCAG 2.2 AA accessibility scans, board-level quality KPIs every sprint.

How we ship a test programme

First regression report in 14 days. Stabilised within 90.

A predictable three-phase delivery so your release confidence improves measurably from the first sprint, not the third quarter.

01

Days 1 – 4

Assess

Audit existing test coverage, defect escape rate, flaky test rate, and environment state. Score against industry benchmarks. Agree on the gap and the plan.

02

Days 5 – 10

Automate

Build the missing layers of the pyramid. Stabilise existing tests. Move regression from manual to gated CI. First report inside 14 days with actionable insights

03

Day 11 onwards

Operate & improve

Maintain the test suite, triage flaky tests, expand coverage to new features. Quarterly quality review with your engineering leadership.

Why Transputec

Four reasons UK engineering leaders choose us for software testing.

Not the cheapest QA outsourcing. Not the largest. But the team that consistently lifts defect-escape, regression time and release confidence in measurable numbers your board will sign off on.

01

UK senior SDETs

No offshored manual-only QA. Every engagement led by a UK-based senior SDET with at least 5 years' automation + framework experience.

02

Tooling-agnostic, framework-agnostic

Playwright, Cypress, Selenium, RestAssured, Karate, Postman, Pact, JMeter, k6, ZAP. We adopt what you have or recommend what fits your stack.

03

Measurable quality KPIs

Coverage %, defect-escape %, mean-time-to-detect, mean-time-to-fix, flaky-test rate, tracked monthly, reported to engineering leadership.

04

Built for handover

Documented runbooks, paired engineering for the first 90 days, exit clause every contract. You own the test estate when you decide to.

Trusted by UK engineering teams

UK enterprises that ship with our QA programme.

Beagle

Generative AI platform, security testing

Excel Security

Bespoke business app, functional QA

City of London Law Society

Legal services, web app testing

Software Development Services

Other Software Development Services from Transputec.

Software testing sits inside our wider Software Development pillar. Most clients combine continuous testing with mobile app development, legacy modernisation, and a UX design programme to keep digital products competitive.

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Software Testing FAQs

What UK engineers ask before signing.

Software testing as a service is a continuous, outsourced programme covering test strategy, automation engineering, CI/CD integration, performance + security + accessibility scans, reporting and ongoing maintenance, delivered by an external team under a fixed monthly fee. Unlike traditional outsourced QA (which is usually manual testers running scripted checks), Software Testing as a Service is automation-first, framework-agnostic and integrated into your developers’ pull-request flow. Transputec’s testing is delivered by UK-based senior SDETs under ISO 27001 controls. For wider context on test cost, read our blog on how penetration testing services reduce cyber risk for SMEs. Our practice aligns with the OWASP ASVS standard.

Functional + E2E: Playwright, Cypress, Selenium WebDriver, TestCafe. API + contract: Postman, RestAssured, Karate, Pact. Mobile: Appium, XCUITest, Espresso. Performance + load: k6, JMeter, Gatling, Locust. Security: OWASP ZAP, Burp Suite Professional, Trivy, Snyk. Accessibility: axe-core, Pa11y, Lighthouse, WAVE. CI/CD: GitHub Actions, GitLab CI, Azure DevOps, Jenkins, CircleCI. We adopt your existing stack or recommend what fits, never force a tooling change for tooling’s sake. Read our deeper take on how DevOps and cloud work together.

UK Software Testing pricing is typically a fixed monthly retainer, with bands by application count and test scope. Single-app maintenance + automation (regression suite, 1 environment, 4-hour suite runtime): £6K-9K per month. Mid-market platform with performance + security + accessibility (3-5 apps, multi-environment, CI gated): £14K-28K per month. Enterprise estate with multi-stack coverage and SDET-as-a-service: bespoke quote. Fixed monthly fee, no day-rate top-ups. For the wider cost framing of cyber risk in untested code, read our blog on penetration testing for AI startups.

Yes. Security testing (DAST + SAST + SCA + dependency scanning) and accessibility testing (WCAG 2.1 + 2.2 AA) are first-class capabilities, not add-ons. DAST uses OWASP ZAP and Burp Suite. SAST uses Semgrep, SonarQube and Snyk Code. Accessibility uses axe-core, Pa11y, Lighthouse and manual screen-reader testing on real assistive tech. See a real security-testing engagement in our generative AI penetration testing case study for Beagle.

We report monthly on six measurable KPIs: automated test coverage %, defect-escape rate (bugs found in production / total bugs), mean-time-to-detect, mean-time-to-fix, flaky-test rate, and regression suite runtime. Each is benchmarked against industry medians and tracked as a trend, not a snapshot. Your engineering leadership and board both get the same report. See a real-client legal-services engagement in our website development case study for the City of London Law Society, and explore the wider Software Development Services pillar.

Software testing is the act of executing tests (unit, integration, end-to-end, performance, security) to find defects and verify behaviour against requirements. QA (Quality Assurance) is the broader discipline of designing processes, environments, gates and metrics that PREVENT defects upstream, code review standards, definition-of-done, test pyramids, CI/CD quality gates and shift-left culture. Modern UK engineering teams treat testing as one tool inside QA, not the whole job. Our service covers both: automated testing across the pyramid plus QA process design tailored to your release cadence.

Ready to lift release confidence?

Talk to a UK senior SDET this week.

Free 30-minute test-strategy call. We assess your current coverage, defect-escape rate and regression time, and give you a costed plan to your first stabilised release. No deck. No sales pitch.