Senior Backend Software Engineer Consultant

NYC IT Inc; New York (NY); On-site; USD 140,000 - 190,000; Full time

Job summary

NYC IT Inc is seeking a Senior Backend Software Engineer / Consultant to join a government product team, delivering secure, scalable backend services for an E-Citations application.

The role is hands-on, involving design, development, testing, and deployment of .NET/C# backend services, REST/SOAP APIs, and enterprise integrations with Azure/AWS/GCP. Collaboration across multiple teams is essential.

Qualifications

• 5+ years of backend engineering and enterprise app development.
• Strong C#, .NET, and ASP.NET Core expertise.
• Cloud-native development with Azure, AWS, or GCP.
• Experience with serverless and containers (K8s, Functions, Lambda).
• Familiarity with OAuth2.0, JWT, RBAC/IAM and secure coding.

Responsibilities

• Design, develop, test, deploy, and support secure backend services.
• Build REST/SOAP APIs and integrations with legacy systems.
• Develop workflow automation, event-driven processing, and data modeling.
• Implement CI/CD, IaC, logging, monitoring, and production diagnostics.
• Troubleshoot production issues and perform root-cause analysis.
• Collaborate with Product, iOS, QA, and cybersecurity teams.

Skills

5+ years experience

C#

.NET

ASP.NET Core

Cloud-native development

Azure AWS GCP

Serverless & containers

Event-driven/workflow

REST/SOAP APIs

Security & IAM

Education

Bachelor's degree in CS/SE/IT

Tools

Azure Functions

Kubernetes

Azure DevOps

GitHub Actions

Terraform

CI/CD tooling

Job description

We are seeking a Senior Backend Software Engineer / Consultant to join a government Product & Engineering team supporting a mission-critical E-Citations application. The role is hands-on and responsible for designing, developing, integrating, testing, deploying, and supporting secure, scalable backend services.

Key Responsibilities

• Design, develop, test, deploy, and support .NET/C# backend services and integrations.
• Build secure REST/SOAP APIs integrating iOS, 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, including retry, idempotency, and deduplication.
• Develop and optimize SQL/NoSQL data models, ETL/ELT pipelines, audit logging, reporting, and performance.
• Implement OAuth 2.0, OIDC, JWT, RBAC/IAM, TLS, encryption, secrets management, and Secure SDLC practices.
• Support CI/CD, Infrastructure-as-Code, automated testing, logging, monitoring, observability, and production diagnostics.
• Troubleshoot complex production issues, perform root-cause analysis, and implement durable fixes.
• Participate in Agile sprints, code reviews, testing, releases, technical documentation, and occasional after-hours production support.
• Collaborate with Product, iOS, QA, infrastructure, cybersecurity, data, and enterprise integration teams.

Required Qualifications & Technical Skills

• 5+ years of hands-on backend software engineering and enterprise application development.
• Strong expertise in C#, .NET, and ASP.NET Core.
• Strong cloud-native development experience with Azure, AWS, or GCP.
• Hands-on experience with serverless and containers, such as Azure Functions, AWS Lambda, Kubernetes/AKS, ECS/Fargate, GKE, or Cloud Run.
• Experience with event-driven/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 coding.
• Strong SQL Server/PostgreSQL and NoSQL experience, including data modeling, ETL/ELT, data warehousing, audit trails, and performance tuning.
• Experience with Azure DevOps, GitHub Actions, GitLab CI/CD, Terraform, ARM/Bicep, CloudFormation, or equivalent tools.
• Strong experience with automated testing, logging, monitoring, distributed tracing, and production troubleshooting.
• Ability to independently deliver complex, production-ready backend solutions.
• Bachelor's degree in Computer Science, Software Engineering, IT, or related discipline, or equivalent professional experience.

Preferred Qualifications

• Microsoft stack: .NET/ASP.NET Core, C#, Azure Functions, Azure SQL, Azure API Management.
• iOS-to-backend integration experience.
• Public-sector, public-safety, transportation, case-management, workflow-driven, or other mission-critical enterprise applications.
• CJIS or comparable security/compliance experience.
• Power BI or similar operational reporting/analytics experience.
• Legacy system integration and modernization.
• High-volume transaction processing and near-real-time enterprise integrations.
• Relevant Azure, AWS, security, or DevOps certifications.

Core Competencies

Backend Engineering | Cloud Architecture | REST/SOAP Integration | Workflow & State Machines | Event-Driven Architecture | SQL/NoSQL | ETL/ELT | Security & IAM | DevOps & CI/CD | Infrastructure-as-Code | Serverless & Containers | SFTP/PGP | Observability | Automated Testing | Production Support | Agile Delivery | Public Safety/CJIS

Ideal candidates will have strong hands-on .NET engineering expertise combined with cloud, security, enterprise integration, data, and production-support experience in complex or mission-critical environments.