At a Glance
- Tasks: Build high-quality, scalable serverless applications using Python and collaborate with a dynamic team.
- Company: Join a forward-thinking tech company focused on innovation and collaboration.
- Benefits: Enjoy competitive salary, health benefits, remote work options, and opportunities for professional growth.
- Other info: Be part of an Agile team with excellent career advancement opportunities.
- Why this job: Make a real impact by developing cutting-edge digital onboarding solutions in a supportive environment.
- Qualifications: Strong Python skills and experience with RESTful APIs and AWS cloud services are essential.
The predicted salary is between 63000 - 77000 £ per year.
We are looking for a talented Python Engineer with hands-on experience building high quality, scalable server less applications.
You will work closely with the Lead Engineer to design, build, and enhance the Digital Onboarding Service (DOS) used across the client API Platform.
This role is ideal for someone who is strong in Python, confident working with architects and APIs, and comfortable delivering features within an Agile delivery team.
Responsibilities
- Develop high quality, secure, and maintainable features for the client Digital Onboarding Service using Python on the backend in a serverless and containerized architecture with a Next JS/React client frontend.
- Design, develop, and maintain scalable RESTful APIs and microservices using Python frameworks such as Fast API or Flask.
- Build and support cloud-native solutions leveraging AWS services including Lambda, ECS Fargate, API Gateway, Dynamo DB, S3, Secrets Manager, and Cloud Watch.
- Work closely with the Lead React Engineer, Technical Architects, and Engineering teams to implement technical designs, architectural patterns, and coding standards.
- Collaborate with product managers, designers, and client stakeholders to translate business requirements into robust technical solutions.
- Design and implement integrations with internal client systems and external third-party APIs using REST, webhooks, and event-driven integration patterns.
- Apply software engineering best practices, including SOLID principles, Clean Architecture, Repository Pattern, Factory Pattern, Strategy Pattern, Dependency Injection, and other design patterns to create maintainable and extensible solutions.
- Implement resilient solutions using retry mechanisms, error handling strategies, circuit breaker patterns, dead-letter queues, and asynchronous messaging.
- Work within established development and release processes to ensure high-quality software delivery.
Contribute to code quality, automated testing, performance optimization, and system reliability improvements.
- Support CI/CD deployment pipelines and collaborate with Dev Ops teams to ensure smooth and reliable application delivery.
- Contribute to documentation, knowledge sharing, and continuous improvement within the engineering team.
Requirements
- Professional software engineering experience.
- Strong commercial experience with Python using Fast API, Flask, or similar backend frameworks.
- Extensive experience developing RESTful APIs, microservices, and backend services.
- Strong hands‑on experience with AWS cloud services, including ECS Fargate, Lambda, API Gateway, Dynamo DB, S3, SNS, SQS, Event Bridge, Step Functions, IAM, Secrets Manager, and Cloud Watch.
- Strong experience with serverless deployment and architecture patterns.
- Experience developing and deploying containerized applications using Docker and AWS ECS/Fargate.
- Experience integrating with third‑party APIs, enterprise platforms, and external services.
- Strong understanding of software design patterns, object‑oriented programming principles, clean code practices, and distributed system design.
- Experience implementing API security using OAuth2, JWT, Open ID Connect, API Keys, and secure authentication/authorization mechanisms.
- Experience with relational and No SQL databases such as Postgre SQL, My SQL, Aurora, or Dynamo DB.
- Experience with Infrastructure as Code (Terraform, AWS CDK, or Cloud Formation) is highly desirable.
- Good understanding of software deployment processes, application monitoring, logging, and environment management.
- Experience working in secure or regulated environments (e. g., healthcare, finance, government) is beneficial.
- Understanding of data protection, access control, and secure software development practices.
- Experience working within Agile/Scrum delivery environments.
Nice-to-Have Skills
- Experience with React/Next JS.
- Experience with automated testing frameworks such as Pytest, Unit Testing, Integration Testing, and API Testing.
- Exposure to Web Sockets, event‑driven architectures, or real‑time data patterns.
- Familiarity with modern authentication approaches such as OAuth2, Open ID Connect, JWT, and AWS Cognito.
- Experience with Open API/Swagger specifications and API lifecycle management.
- Experience with CI/CD tools such as Git Hub Actions, Azure Dev Ops, Jenkins, or AWS Code Pipeline.
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Senior Python Developer/ Engineer in London employer: Cognizant
Cognizant is an exceptional employer that fosters a collaborative and innovative work culture, making it an ideal place for professionals seeking to excel in their careers. With a strong emphasis on employee growth and development, you will have access to mentorship opportunities and the chance to lead transformative projects in a dynamic environment. Located in a vibrant area, Cognizant offers unique advantages such as a diverse team and a commitment to work-life balance, ensuring that your contributions are both meaningful and rewarding.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Python Developer/ Engineer in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Cognizant or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Cognizant.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Cognizant.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Cognizant that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Python Developer/ Engineer in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Cognizant.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Cognizant and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Cognizant
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Cognizant uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
