Senior Test Automation Engineer (Python, API / Backend) at Castle Group Ventures, Llc in Cambridge, England, United Kingdom | Kablio

Role

Description

python automation

api testing

cloud testing

test planning

defect tracking

quality improvement

Contribute to quality, reliability, and testability improvements across the platform
Maintain and extend an existing Python-based automation framework
Develop and execute API and SDK tests, including regression, negative, and backward-compatibility testing
Identify, log, and verify defects and work closely with engineers to resolve issues
Test applications deployed in cloud environments
Analyse requirements and produce detailed test plans and test cases
Design, implement, and execute automated and manual tests for backend systems and APIs

Requirements

cs degree

api testing

test automation

java

python

linux

Degree in Computer Science or a related field preferred
Experience with commerce, payments, or financial systems is advantageous
Strong experience testing APIs and backend services
Solid understanding of authentication and authorisation mechanisms
Experience using source control and defect tracking tools
Significant experience in test automation within a software engineering environment
Experience with Java, JSON, XML, and web services
Strong troubleshooting skills across both black-box and white-box testing
Comfortable working in a Linux development environment
Hands-on experience writing automation in Python

Benefits

Information not given or found

Training + Development

Information not given or found

Interview process

Information not given or found

Visa Sponsorship

sponsorship not available; must have legal right to work in the uk now and in the future

Security clearance

Information not given or found

Company

Overview

Founded in 2010s

Year Established

The company was established in the early 2010s to address evolving cyber threats.

Grew as a boutique consultancy offering managed security, governance, cloud & endpoint protection
Delivers tailored projects: security audits, governance frameworks, cloud and identity solutions
Specialises in data‑security, cloud security, identity & access, endpoint and email protection
Often partners with clients to integrate security into tech strategy and operations
Known for hands‑on incident response and proactive threat management

Culture + Values

Embodying Our Values” including passion, respect, initiative, and ownership
People‑centric approach with a holistic well‑being focus (“Castle Well” programme: Live Well, Work Well, Be Well, Give Well)
Collaborative, “one team” mindset fostering open communication, creativity, mutual respect
Strong emphasis on innovation and continuous learning
Commitment to building trusted partnerships—with clients, suppliers, and internal teams

Environment + Sustainability

Established staff‑run sustainability committee to foster environmental responsibility
Reducing operational energy consumption, promoting recycling and waste reduction
Targeting greenhouse‑gas emission cuts through energy‑efficient technologies, remote‑work support, and sustainable transport
Promoting circular supply‑chain practices by working with sustainable suppliers
Client engagement in sustainable practices via PR/event campaigns
Community involvement through sponsored volunteering and environmental education
Transparency in disclosing sustainability progress; participant in UN Global Compact

Inclusion & Diversity

100% CEO Approval

Women-Owned Leadership

The CEO has received 100% approval from employees, reflecting strong support for the company's culture and leadership.

4.3/5 Rating

Diversity & Inclusion

The company has a 4.3/5 rating for diversity and inclusion on Glassdoor, indicating strong employee satisfaction with these initiatives.

100% Approval

Employee Approval

The CEO has received a 100% approval rating from employees, highlighting strong leadership and workplace satisfaction.

Values employees and hard work
Inclusive, progressive-thinking, woman-owned, casual work environment
CSR and DEI embedded in pro-bono, volunteerism and mentoring activities
No explicit gender statistics disclosed publicly

Articles

Castle Group Ventures Website

Castle Group Ventures LinkedIn

Company

Overview

Founded in 2010s

Year Established

The company was established in the early 2010s to address evolving cyber threats.

Grew as a boutique consultancy offering managed security, governance, cloud & endpoint protection
Delivers tailored projects: security audits, governance frameworks, cloud and identity solutions
Specialises in data‑security, cloud security, identity & access, endpoint and email protection
Often partners with clients to integrate security into tech strategy and operations
Known for hands‑on incident response and proactive threat management

Culture + Values

Embodying Our Values” including passion, respect, initiative, and ownership
People‑centric approach with a holistic well‑being focus (“Castle Well” programme: Live Well, Work Well, Be Well, Give Well)
Collaborative, “one team” mindset fostering open communication, creativity, mutual respect
Strong emphasis on innovation and continuous learning
Commitment to building trusted partnerships—with clients, suppliers, and internal teams

Environment + Sustainability

Established staff‑run sustainability committee to foster environmental responsibility
Reducing operational energy consumption, promoting recycling and waste reduction
Targeting greenhouse‑gas emission cuts through energy‑efficient technologies, remote‑work support, and sustainable transport
Promoting circular supply‑chain practices by working with sustainable suppliers
Client engagement in sustainable practices via PR/event campaigns
Community involvement through sponsored volunteering and environmental education
Transparency in disclosing sustainability progress; participant in UN Global Compact

Inclusion & Diversity

100% CEO Approval

Women-Owned Leadership

The CEO has received 100% approval from employees, reflecting strong support for the company's culture and leadership.

4.3/5 Rating

Diversity & Inclusion

The company has a 4.3/5 rating for diversity and inclusion on Glassdoor, indicating strong employee satisfaction with these initiatives.

100% Approval

Employee Approval

The CEO has received a 100% approval rating from employees, highlighting strong leadership and workplace satisfaction.

Values employees and hard work
Inclusive, progressive-thinking, woman-owned, casual work environment
CSR and DEI embedded in pro-bono, volunteerism and mentoring activities
No explicit gender statistics disclosed publicly

Articles

Castle Group Ventures Website

Castle Group Ventures LinkedIn