100% Remote- Senior Backend Engineer (C#/.NET and Python) Lead (10 to 12 Years Experience)

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Please check the job description as below and let me know you if you would be interested and available. Please let me know your available time for a quick call.

Senior Backend Engineer (C#/.NET and Python) Lead (10 to 12 Years' Experience)
Remote

Role Summary

Lead the design and development of scalable backend services and APIs built with C#/.NET and Python, hosted on AWS EKS with MongoDB. You will own solution architecture, mentor engineers, drive CI/CD with GitHub Actions and Argo CD, and ensure reliability, security, and observability (Dynatrace or similar). This role requires strong leadership, stakeholder management, and excellent presentation/demo skills within an Agile SAFe environment.

Key Responsibilities
• Architect, design, and deliver backend microservices and APIs (REST/GraphQL) on AWS EKS.
• Lead technical design documents, architecture diagrams, and ADRs; present and gain alignment with stakeholders.
• Implement CI/CD pipelines using GitHub Actions; manage GitOps-based deployments via Argo CD.
• Model, optimize, and operate MongoDB for performance, availability, and scalability.
• Establish service reliability practices: SLOs/SLIs, alerting, runbooks, and incident response.
• Ensure security-by-design: secrets management, IAM least privilege, API security, and compliance with best practices.
• Drive code quality (reviews, standards), testing strategy (unit, integration, contract, performance), and documentation.
• Collaborate cross-functionally with Product, UX, QA, DevOps, and Security; influence roadmaps and trade-offs.
• Mentor and coach engineers; lead backlog refinement, PI planning, and delivery in SAFe.
• Prepare and deliver clear technical presentations and live demos to leadership and clients.

Required Qualifications
• 10 12 years of professional software engineering experience with at least 5+ years focused on backend systems and distributed architectures.
• Strong programming expertise in C#/.NET and Python for production services.
• Proven experience designing and operating containerized services on Kubernetes (AWS EKS).
• Hands-on MongoDB expertise: schema design, indexing, aggregation, transactions, performance tuning, and operational management (e.g., Atlas or self-managed).
• Demonstrated CI/CD ownership with GitHub Actions and GitOps deployments via Argo CD.
• Advanced AWS knowledge: EKS, ECR, IAM, VPC, ALB/NLB, Route 53, CloudWatch/CloudWatch Logs, Secrets Manager/Parameter Store, S3.
• API design and lifecycle management: versioning, pagination, rate limiting, authentication/authorization (OAuth2/OIDC/JWT), documentation (OpenAPI/Swagger).
• Observability and APM with Dynatrace or similar tools; metrics, logs, traces, dashboards, and alerting.
• Leadership experience: mentoring, guiding technical direction, influencing stakeholders, and leading delivery in Agile SAFe.
• Excellent communication, documentation, presentation, and demo skills.

Technical Skills
• Languages/Frameworks: C#/.NET 6+ (ASP.NET Core), Python 3.x (FastAPI/Flask), LINQ, async patterns.
• APIs/Integration: REST, SOAP and GraphQL, Webhooks, idempotency patterns, circuit breakers, retries, and backoff.
• Data: MongoDB (replica sets, sharding, TTL collections), schema versioning, aggregation pipelines; caching (Redis) preferred.
• Cloud/Kubernetes: Kubernetes fundamentals (deployments, services, ingress, config/secrets), Helm/Kustomize, autoscaling (HPA/Cluster Autoscaler), pod security, network policies.
• CI/CD & DevOps: GitHub Actions workflows, Argo CD applications and sync strategies, artifact versioning, environment promotion, blue/green and canary releases.
• Observability: Dynatrace; familiarity with OpenTelemetry, log shipping (Fluent Bit), and tracing best practices.
• Security: IAM, KMS, container image scanning, vulnerability management, OWASP ASVS, SAST/DAST integration into pipelines.
• Testing: unit/integration, contract testing (e.g., Pact), load/performance (k6/JMeter), chaos/resilience testing (preferred).

Preferred Qualifications
• Experience with event-driven architectures and messaging (RabbitMQ,Kafka/SNS/SQS).
• Cost optimization and capacity planning on AWS.
• Infrastructure as Code exposure (Terraform/CloudFormation) and policy-as-code (OPA) is a plus.
• Experience with additional APM/observability tools (Datadog, New Relic, PrometheGrafana).
• Prior experience operating high-availability, high-throughput services in regulated or enterprise environments.

Certifications (Preferred)
• AWS Certified Solutions Architect (Associate/Professional) or AWS Certified DevOps Engineer.
• MongoDB Certified Developer or DBA.
• Kubernetes (CKA/CKAD) and/or GitHub Actions/Argo CD ecosystem certifications.

Ways of Working
• Agile SAFe ceremonies: PI Planning, Sprint Planning, Reviews, Retros, System Demos.
• Git-based workflows (feature branches, PR reviews, trunk-based where applicable).
• Documentation-first mindset: technical design docs, API specs, and operational runbooks.
• Ownership of services through build run lifecycle, including on-call participation as needed.

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Thanks & Regards.

Isaac Rajiv

Kutir Corporation

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