Senior Backend Software Engineer / .Net Consultant at Broadway, NY (Hybrid)

Title: Senior Backend Software Engineer / .Net Consultant

Location: Broadway, NY (Hybrid 3 days onsite in a week)

Duration: 12+ months

Interview Mode: Video

Client: MTA

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 within 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.


• Build 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 directly in sprint delivery, code reviews, testing, releases, and technical documentation.


• Support production releases and critical operational issues, including occasional evening or weekend support when required.


• Collaborate closely with Product, iOS, QA, infrastructure, cybersecurity, data, and enterprise integration teams to deliver working solutions.

Required Skills

• 5+ years of hands-on backend software engineering and enterprise application development experience.


• Strong expertise in C#, .NET, andASP.NETCore.


• Strong experience designing and developing cloud-native backend services and APIs.


• Experience with at least one major cloud platform: Azure, AWS, or GCP.


• Hands‑on experience with serverless and container technologies, such as Azure Functions, AWS Lambda, Kubernetes/AKS, ECS/Fargate, GKE, or Cloud Run.


• Strong experience with event‑driven and workflow technologies, such as Durable Functions, Step Functions, Temporal, Kafka, Event Hub, Pub/Sub, SNS, or SQS.


• Strong enterprise integration experience with REST, SOAP, API gateways, SFTP/PGP, message queues, polling, retry, idempotency, and deduplication.


• Strong knowledge of OAuth 2.0, OIDC, JWT, RBAC/IAM, TLS, encryption, secrets management, and Secure SDLC practices.


• Strong data engineering experience with SQL Server/PostgreSQL, NoSQL platforms, data modeling, ETL/ELT, data warehousing, audit trails, and performance tuning.


• Experience with Azure DevOps, Azure Government, GitHub Actions, GitLab CI/CD, Terraform, ARM/Bicep, CloudFormation, or equivalent DevOps tooling.


• Strong experience with automated testing, logging, monitoring, distributed tracing, and production diagnostics.


• Ability to independently execute complex backend development assignments and deliver high‑quality production software.

Preferred Experience

• Microsoft technology stack: .NET/ASP.NETCore, C#, Azure Functions, Azure SQL, Azure API Management.


• Mobile-to-backend integration, particularly iOS applications.


• Public‑sector, public‑safety, transportation, case‑management, workflow‑driven, or other mission‑critical enterprise applications.


• CJIS or comparable security/compliance environments.


• Power BI or similar operational reporting and 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, Information Technology, or a related discipline, or equivalent professional experience.


• Relevant Azure, AWS, security, or DevOps certifications are a plus.

Additional Skills and Information

• Backend Software Engineering (.NET / C#)


• Cloud Architecture & Development (Azure/AWS/GCP)


• REST API & Enterprise Systems Integration


• Workflow Automation & State‑Machine Design


• Event‑Driven Architecture & Messaging


• Data Modeling, SQL/NoSQL & Transaction Integrity


• Security, IAM, Authentication & Encryption


• ETL/ELT & Data Integration


• DevOps, CI/CD & Infrastructure‑as‑Code


• Production Troubleshooting & Performance Optimization


• Serverless & Containerized Application Development


• Secure File / Legacy Integration (SFTP, SOAP, PGP)


• Observability, Logging & Monitoring


• Mobile‑to‑Backend Integration, ideally iOS


• Automated Testing & Code Quality Practices


• Technical Documentation


• Agile Software Delivery & Code Reviews


• Public Safety / CJIS / Mission‑Critical Systems