Senior Backend Developer

About the RoleWe are seeking a highly skilled and motivated Senior Backend Developer to join our growing engineering team. In this role, you will play a key part in designing, building, and maintaining a robust Customer Communication Preferences Platform — enabling seamless delivery of communications across SMS, Email, Voice, and Push Notifications. This is an exciting opportunity for a developer who takes ownership of their work, has an insatiable curiosity for learning, and thrives in a collaborative, high-standards environment.We value engineers who don't just solve today's problems — but who actively seek out emerging technologies, invest time in mastering them, and bring that knowledge back to elevate the entire team.What you will do at Sogeti:Key ResponsibilitiesDesign and develop scalable, maintainable backend services supporting multi-channel customer communication preferences (SMS, Email, Voice, Push Notifications)Architect solutions following n-tier design principles, ensuring clear separation of concerns across presentation, business logic, and data layersApply Single Responsibility Principle (SRP) and other SOLID design principles consistently across all codebasesOwn end-to-end delivery of features — from technical design through deployment and post-release monitoringProactively research emerging technologies, frameworks, and industry trends relevant to backend and cloud developmentChampion a learning culture by sharing findings, writing internal tech blogs, or presenting at team knowledge-sharing sessionsCollaborate with cross-functional teams including frontend developers, product managers, and DevOps engineersParticipate in code reviews, providing constructive and meaningful feedbackContribute to technical documentation, architecture decisions, and engineering best practicesProactively identify and resolve performance bottlenecks, security vulnerabilities, and technical debtMentor junior and mid-level developers, fostering a culture of quality, accountability, and continuous growthWhat you will bring:Required Qualifications5+ years of professional backend software development experienceStrong proficiency in C# — including modern language features, async/await patterns, and .NET Core / .NET 8+Demonstrated understanding and practical application of SOLID principles, particularly:Single Responsibility PrincipleDependency InversionOpen/Closed PrincipleSolid grasp of n-tier / layered architecture patterns and when to apply themHands-on experience with AWS or AzureExperience building and consuming RESTful APIsFamiliarity with no-SQL databases (e.g., Cosmos, MongoDB) and SDK used in the Data Access layer.Strong understanding of message queuing and event-driven architecturesProven track record of personal accountability — owning tasks, meeting commitments, and proactively communicating blockersDemonstrated passion for self-directed learning — evidence of independently researching, experimenting with, and adopting new technologies outside of day-to-day responsibilitiesPreferred QualificationsFamiliarity with customer preference management or consent/opt-in/opt-out frameworksKnowledge of CI/CD pipelines (GitHub Actions)Experience with containerization using Docker and orchestration via KubernetesExposure to microservices architectureCloud certifications in AWS or Azure — particularly those pursued on personal initiativeActive participation in developer communities, hackathons, or tech meetupsAbout SogetiPart of the Capgemini Group, Sogeti makes business value through technology for organizations that need to implement innovation at speed and want a local partner with global scale. With a hands-on culture and close proximity to its clients, Sogeti implements solutions that will help organizations work faster, better, and smarter. By combining its agility and speed of implementation through a DevOps approach, Sogeti delivers innovative solutions in quality engineering, cloud and application development, all driven by AI, data and automation.Become Your Best | www.sogeti.usDisclaimerCapgemini is an Equal Opportunity Employer encouraging diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodations do not pose an undue hardship.Capgemini is committed to providing reasonable accommodation during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.Click the following link for more information on your rights as an Applicant http://www.capgemini.com/resources/equal-employment-opportunity-is-the-lawApplicants for employment in the US must have valid work authorization that does not now and/or will not in the future require sponsorship of a visa for employment authorization in the US by Capgemini.Capgemini discloses salary range information in compliance with state and local pay transparency obligations. The disclosed range represents the lowest to highest salary we, in good faith, believe we would pay for this role at the time of this posting, although we may ultimately pay more or less than the disclosed range, and the range may be modified in the future. The disclosed range considers the wide range of factors that are considered in making compensation decisions including, but not limited to, geographic location, relevant education, qualifications, certifications, experience, skills, seniority, performance, sales or revenue-based metrics, and business or organizational needs. At Capgemini, it is not typical for an individual to be hired at or near the top of the range for their role. The base salary range for the tagged location is $130,000 - $168,000.This role may be eligible for other compensation including variable compensation, bonus, or commission. Full-time regular employees are eligible for paid time off, medical/dental/vision insurance, 401(k), and any other benefits to eligible employees.Note: No amount of pay is considered to be wages or compensation until such amount is earned, vested, and determined. The amount and availability of any bonus, commission, or any other form of compensation that is allocable to a particular employee remains in the Company's sole discretion unless and until paid and may be modified at the Company’s sole discretion, consistent with the law.