Senior Backend Software Engineer

End Client : MTA (Metropolitan Transportation Authority)

Job Title: Senior Backend Software Engineer

Duration: 12 Months + Extendable

Location: 2 Broadway, New York, NY 10004 (Hybrid)

Ceipal ID: MTA_NET907_MA

Job Code: 5907-1

Position Overview

The Senior Backend Software Engineer / Consultant is a hands-on engineer responsible for developing, integrating, testing, deploying, and supporting backend services for the E-

Citations application .

This role requires deep expertise in .NET, cloud-native development, secure APIs, workflow automation, enterprise integration, data engineering, and production support . The consultant will work directly with the Product and Engineering team to deliver secure, scalable, production-ready backend capabilities and resolve complex technical issues.

Key Responsibilities

• Design, develop, test, deploy, and support backend services and integrations for E-Citations.
• Build secure REST/SOAP APIs and integrations across iOS, .NET, enterprise, and legacy systems.
• Develop workflow automation, business rules, state-machine logic, and event-driven processing.
• Implement resilient real-time, near-real-time, messaging, SFTP, and batch integrations using retry, idempotency, and deduplication patterns.
• Develop and optimize relational and NoSQL data models, ETL/ELT pipelines, audit logging, and reporting integrations.
• Implement authentication, authorization, RBAC, encryption, secrets management, and secure coding practices.
• Develop and support CI/CD pipelines, Infrastructure-as-Code, automated testing, logging, monitoring, and observability.
• Troubleshoot complex defects and production issues, perform root-cause analysis, and implement durable fixes.
• Participate in sprint delivery, code reviews, testing, releases, and technical documentation.
• Support production releases and critical operational issues, including occasional evening or weekend support.
• Collaborate closely with Product, iOS, QA, infrastructure, cybersecurity, data, and enterprise integration teams.

Required Skills

• 5+ years of backend software engineering and enterprise application development.
• Strong expertise in C#, .NET, ASP.NET Core .
• Experience designing and developing cloud-native backend services and APIs .
• Hands-on experience with Azure, AWS, or GCP .
• Serverless and container technologies (Azure Functions, AWS Lambda, Kubernetes/AKS, ECS/Fargate, GKE, Cloud Run).
• Event-driven and workflow technologies (Durable Functions, Step Functions, Temporal, Kafka, Event Hub, Pub/Sub, SNS, SQS).
• Security expertise: OAuth 2.0, OIDC, JWT, RBAC/IAM, TLS, encryption, secrets management, Secure SDLC.
• Data engineering with SQL Server/PostgreSQL, NoSQL, ETL/ELT, data warehousing, audit trails, performance tuning.
• DevOps tooling (Azure DevOps, GitHub Actions, GitLab CI/CD, Terraform, ARM/Bicep, CloudFormation).
• Automated testing, logging, monitoring, distributed tracing, and production diagnostics.
• Ability to independently deliver complex backend development assignments.

Preferred Experience

• Mobile-to-backend integration (especially iOS).
• Public-sector, public-safety, transportation, case-management, or mission-critical enterprise applications.
• CJIS or comparable security/compliance environments.
• Power BI or similar reporting/analytics platforms.
• Legacy system integration and modernization.
• High-volume transaction processing and near-real-time enterprise integration.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, IT, or related discipline (or equivalent experience).
• Relevant Azure, AWS, Security, or DevOps certifications are a plus.

Additional Skills & Information

• Backend Software Engineering (.NET / C#)
• Workflow Automation & State-Machine Design
• Data Modeling, SQL/NoSQL & Transaction Integrity
• ETL/ELT & Data IntegrationDevOps, CI/CD & Infrastructure-as-Code
• Production Troubleshooting & Performance Optimization
• Serverless & Containerized Application Development
• Mobile-to-Backend Integration (iOS preferred)
• Automated Testing & Code Quality Practices
• Technical Documentation
• Agile Software Delivery & Code Reviews
• Public Safety / CJIS / Mission-Critical Systems