Role: Lead Developer
Location: Stratford London (3 days a week)
Employment: Fulltime
Purpose of the role:
Lead Developer role for a global organization, responsible for designing, implementing and optimizing Python and cloud based solutions using AWS and PySpark for data intensive and regulatory focused applications. The role requires strong experience in PL SQL and AWS services, owning end to end technical delivery, code quality and performance in a hybrid day shift model with no travel.
Responsibilities:
Design scalable Python applications that process complex business and regulatory data sets, ensuring robustness, maintainability and clear modular structure for long term reuse and evolution.
Develop secure and efficient solutions on AWS cloud that leverage core services to support highly available data processing pipelines and transaction workflows aligned with enterprise standards.
Implement optimized PySpark jobs for large scale data transformations, ensuring efficient resource usage, predictable performance and alignment with agreed data models and quality rules.
Create and refine PL SQL procedures and queries that support data integrity, regulatory reporting demands and high volume operations while maintaining consistent performance across environments.
Coordinate with product owners and business stakeholders to translate regulatory and governance needs into clear technical requirements and deliverables that directly support compliance objectives.
Review and refine code contributions from the development team, ensuring adherence to Python coding standards, AWS best practices and database optimization guidelines for consistent quality.
Provide detailed technical estimates and task breakdowns for Python, AWS and data engineering work, enabling accurate planning of sprints and transparent communication of delivery timelines.
Guide the adoption of secure coding patterns, encryption and access control mechanisms across Python services and AWS configurations to protect sensitive data in regulatory contexts.
Collaborate with cloud operations and security teams to validate deployment configurations, monitoring coverage and incident response procedures for critical applications running on AWS.
Analyze production issues related to Python services, data pipelines or PL SQL routines, identifying root causes and implementing durable fixes that minimize repeat incidents and downtime.
Document solution architectures, service interactions and data flows in clear technical design records that support audit needs and knowledge transfer for governance and compliance programs.
Drive continuous improvement in build and deployment automation using Python tooling and AWS native capabilities to reduce manual effort, accelerate releases and improve reliability of changes.
Align daily development activities with the organization purpose by building trustworthy systems that help clients meet regulatory obligations and contribute to more transparent and compliant markets.
Certifications Required
Preferred certifications include AWS Certified Developer Associate or AWS Certified Solutions Architect Associate and a Python programming certification.
Things to know before you apply
- Work authorization: Cognizant will only consider applicants for this position who are legally authorized to work in Canada without requiring employer sponsorship, now or at any time in the future.
- Accommodations: If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.
- AI in hiring: We use artificial intelligence (AI) tools to help us screen and assess applications more efficiently. Our team performs additional human review and ultimately decides who moves forward in our hiring process.
- Open position: Unless otherwise stated, this job posting is for an open position on our team.
- Language proficiency: We ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.
- Inclusion: Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
About Cognizant
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
