Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior C#/.NET Software Engineer - AI & Agentic Systems

The Phoenix Group

Role Overview

We are seeking a Senior Software Engineer with a strong C#/.NET engineering foundation who has expanded into modern AI development using Python, LLMs, and agentic technologies .

This is a hands-on engineering position focused on building production applications that combine traditional enterprise software development with emerging AI capabilities. The ideal candidate has spent several years designing and developing C#/.NET applications and backend systems and more recently has been building AI-powered applications, agents, MCP integrations, and Python-based AI services .

Responsibilities

  • Design, develop, and maintain enterprise applications and services using C#, .NET, ASP.NET MVC/Core, SQL, and modern web technologies .
  • Build and integrate AI-powered functionality into existing and new software applications .
  • Develop Python-based AI services, APIs, workers, and automation workflows .
  • Design and build LLM-powered applications, agents, and agentic workflows .
  • Develop and integrate MCP servers and MCP-enabled tools for enterprise applications.
  • Integrate applications with commercial and locally hosted LLMs using technologies such as OpenAI APIs, Claude, Ollama, or similar platforms .
  • Build secure integrations between AI services, enterprise applications, APIs, databases, and internal systems.
  • Design reliable production software with an emphasis on scalability, maintainability, testing, security, and performance .
  • Help establish engineering standards and best practices for agentic and AI-assisted software development .
  • Evaluate emerging AI development tools, frameworks, coding agents, and model platforms.
  • Participate in architecture discussions, code reviews, troubleshooting, and technical knowledge sharing.
  • Collaborate with business stakeholders and engineering teams to translate business requirements into production-ready technical solutions.

Core Qualifications

  • 5+ years of professional software engineering experience , ideally with significant hands-on experience in C#/.NET .
  • Strong experience building production applications using C#, .NET / .NET Core, ASP.NET MVC/Core, REST APIs, and SQL .
  • Strong software engineering fundamentals including application architecture, APIs, object-oriented development, testing, CI/CD, and production deployment .
  • Hands-on Python development , particularly for AI applications, backend services, APIs, or automation.
  • Experience integrating LLMs into production software applications .
  • Experience working with OpenAI APIs or comparable LLM APIs/platforms .
  • Experience building AI agents, agentic workflows, or AI-enabled application features .
  • Hands-on experience with Model Context Protocol (MCP) , ideally including development of custom MCP servers or tools.
  • Understanding of authentication, authorization, APIs, and secure service-to-service communication .
  • Experience with cloud environments such as Azure or AWS .
  • Ability to take ownership of complex engineering problems from architecture and design through production deployment.

PREFERRED QUALIFICATIONS:

  • Experience in the legal industry.
  • Experience with iManage Cloud API, PowerShell, Salesforce, SharePoint, Azure DevOps, Aderant, Workday.

The Phoenix Group Advisors is an equal opportunity employer. We are committed to creating a diverse and inclusive workplace and prohibit discrimination and harassment of any kind based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. We strive to attract talented individuals from all backgrounds and provide equal employment opportunities to all employees and applicants for employment.

Vacancy posted 2 hours ago
Similar jobs that could be interesting for youBased on the Senior C#/.NET Software Engineer - AI & Agentic Systems in New York, NY vacancy
  • New YorkLab49 - Software Engineering /Full-time /HybridLab49 is a...  ...is now looking for a Senior Agentic Developer, an engineer who doesn’t just use AI tools but writes software...  ...complex, legacy systems in highly regulated environments...  ...(e.g., Java, C#, Python, JVM-based stacks... 
    Senior
    C#
    Full time
    Work at office

    ION Group

    New York, NY
    2 days ago
  • Genesis10 is seeking a Senior AI Engineer (Generative AI & Agentic Systems) for a contract role in Pennington, NJ. You will design and scale production-grade LLM apps, orchestrating Generative AI workflows with LangGraph, LangChain, and Deepagents. Responsibilities include... 
    Senior
    Hourly pay
    Contract work

    BlackCube Labs

    New York, NY
    2 days ago
  • $95.6k - $188.4k

     ...Join our Deloitte AI & Engineering team to transform technology...  ...’ll Do As a Project Software Engineer III on the Engineering...  ...applications using C#, .NET 6/8+, ASP.NET Core,...  ..., and external systems. Build and maintain Dynamics...  ...-level employees to senior leaders, we believe there... 
    Senior
    C#
    Local area
    Flexible hours

    Deloitte

    New York, NY
    5 days ago
  • $147.6k - $274k

     ...us Roche.Advances in AI, data and computational...  ...for Drug Discovery, the Software Engineering team builds and...  ...Engineer to help build our agentic platform for molecule...  ...experience; and for the Senior Machine Learning...  ...testing, data modeling, and system design.You have... 
    Senior
    Full time
    Local area
    Worldwide
    Relocation package
    3 days per week

    Genentech

    New York, NY
    4 days ago
  •  ...actively searching for an AI Assited Software Engineer II (Remote) This position...  ...requiring strong skills in C#, SQL, and Azure. Leadership...  ...features into production systems is a plus! While experience...  ..., AI Assist Development, VSCode, and Agentic (AI Agents).... 
    C#
    Remote work

    CDM Technology

    New York, NY
    6 days ago
  • $55.06 - $63.06 per hour

    Genesis10 is currently seeking a Senior AI Engineer (Generative AI & Agentic Systems) for a contract position with a Global Financial Institution located in Pennington, NJ. This is a 12+ month contract opportunity. We are seeking an Advanced Python Engineer with specialized... 
    Senior
    Hourly pay
    Contract work

    BlackCube Labs

    New York, NY
    2 days ago
  •  ...Job Description Senior .NET Engineer (multiple)   U.S.-Based...  ...code - even when using AI  You lead by example...  ...in Computer Science, Software Engineering, or related...  ...with .NET stack (C#, .NET, Entity Framework...  ...both existing and new systems and platforms  ·... 
    Senior
    C#
    Remote work
    Home office

    Teambuilder

    New York, NY
    14 days ago
  •  ...in-office Level: Senior Experience: 8+ years of professional software engineering experience About the...  ...and taken ownership of systems throughout their...  ...scientists, research-focused AI practitioners, or...  ...Working knowledge of C# or .NET is helpful but not required... 
    Senior
    C#
    Work at office
    Remote work
    2 days per week

    InnoveIQ

    New York, NY
    2 hours ago
  • $229.9k - $262.4k

    AI Engineer 5 (Gen AI Platform Services - Agentic Systems) Overview: At Capital One, we are creating responsible and reliable...  ..., test, deploy, and support AI software components including foundation model...  ..., Memory) using Python, C++, C#, Java, CUDA, or Golang ~ Experience... 
    C#
    Full time
    Part time
    Local area

    Capital One

    New York, NY
    4 days ago
  • $130k - $200k

     ...York and Toronto, building agentic solutions that re-imagine how...  ...seeking a talented, innovative Senior Software Engineer to join our growing team....  ...writing code to expand our AI product line. You will play...  ...end Architect communication systems that coordinate across... 
    Senior
    Work at office
    Local area
    3 days per week

    CareLink (by Asepha)

    New York, NY
    6 days ago
  •  ...klienta poszukujemy kandydatów na stanowisko: Senior .NET Engineer Projekt Tworzenie i rozwój innowacyjnych system...  ...ubezpieczeniowym, ze wsparciem najnowszych asystentów AI (Claude, GitHub Copilot). Stack technologiczny .NET, C#, SQL (SQL Server / Azure SQL / MySQL), React /... 
    Senior
    C#
    Immediate start

    Next Technology Professionals

    New York, NY
    4 days ago
  •  ...Banking and Capital Markets - GenAI / Agentic Systems, Infosys ConsultingThe Role - What You’...  ...Financial Services Principal Consultant with AI experience to design, build, and scale...  ...-driven applicationsImplement prompt engineering, evaluation frameworks, and... 
    Full time
    Temporary work
    Work experience placement

    Infosys Technologies

    New York, NY
    1 day ago
  •  ...RoleWhat You'll DoBuild AI-powered applications using C#, .NET, and Azure. Design and implement...  ...RAG pipelines and agentic workflows. Integrate LLMs into production systems using APIs, function calling...  ...5+ years of software engineering experience Strong C# / .NET... 
    Senior
    C#

    Motion Recruitment

    New York, NY
    3 days ago
  • $150k - $175k

     ...looking to hire a Senior Application...  ...for developing AI-enhanced solutions...  ...primarily using C# and modern AI framework...  ...Developer-.Net/AILocation:RemoteRequired...  ....Leverage agentic coding tools...  ...legal and business systems.Stay current...  ...including prompt engineering, AI agent development... 
    Senior
    C#

    Talener

    New York, NY
    5 days ago
  • $215k - $275k

     ...modern technology and software products with...  ...blend design, product engineering, analytics, automation, and AI-native delivery to...  ...production-grade AI systems that combine machine...  ..., generative AI, agentic workflows, modern data...  ....* Develop senior practitioners and practice... 
    Senior
    Temporary work
    Local area

    Slalom

    New York, NY
    3 days ago
  •  ...Description Trilagen is hiring a Senior Account Executive focused on net-new enterprise business development for Agentic AI services and solutions....  ...of a large marketing engine or Fortune 500 logo. If your...  ...workflows, decision logic, and system dependencies before... 
    Senior

    Trilagen

    New York, NY
    9 days ago
  • $117.2k - $313.7k

     ...DetailsAbout SalesforceSalesforce is the #1 AI CRM, where humans with agents drive...  ...workforce transformation in the agentic era? You’re in the right place!...  ...future of Salesforce.Distributed Systems Software Engineer - Public Cloud (Senior/Lead/Principal) Note: By applying to... 
    Senior
    Full time

    Salesforce

    New York, NY
    1 day ago
  •  ...seeking an experienced Senior Enterprise...  ...technologies, with AI and agentic automation as key...  ...solution architects and engineering teams on...  ...existing enterprise systems Qualifications...  ...have 10 years in software engineering, solution...  ...Python, Node.js, Java, C#, or similar... 
    Senior
    C#
    Full time

    PRI Technology

    New York, NY
    3 days ago
  • $25k

     ...industry-leading software development practicesShip...  ...cutting-edge AI tools to bring...  ...impactful use of AI and agentic workflows across...  ...between systems that generate efficiency...  ...challenges. Biz Tech engineers at SeatGeek create...  ...Python (FastAPI), Go, C# (.NET Core),... 
    Senior
    C#
    Work at office
    Local area
    Work from home
    Home office

    SeatGeek

    New York, NY
    2 days ago
  • $184.9k - $250.2k

     ...increasingly authored using AI agents; not as an...  .... You'll be the senior engineer owning the architecture...  ...deterministic orchestration with agentic reasoning at the...  ...decisions in adjacent systems your services depend...  ...internship professional software development experience... 
    Senior
    Internship
    Flexible hours
    Shift work
    Day shift

    Amazon

    New York, NY
    1 day ago
  •  ...seasoned Machine Learning and Computer Algorithm Engineer. In this hands-on role, you will develop AI-driven software solutions for facial recognition and threat detection...  ...development. Strong coding skills in Python, C#, or C++ are essential, alongside experience with... 
    Senior
    C#

    Peskind Executive Search

    New York, NY
    1 day ago
  •  ...The Senior Applied AI Engineer will be responsible for building, deploying...  ...with Python, .NET/C#, AI application development...  .... Build agentic integrations using tool...  ...workflows, and enterprise system integrations;...  ...standards. Strong software engineering, troubleshooting... 
    Senior
    C#
    Work at office

    DBI Staffing

    New York, NY
    2 hours ago
  •  ...Description Position: Senior .NET Developer...  ...Support & Development Engineer We are seeking a...  ...portfolio spanning legacy systems, Microsoft...  ...with care, and using AI-assisted...  ...years of professional software engineering experience...  ...NET Core, ASP.NET, C#, and VB.NET... 
    Senior
    C#

    h3-Technologies

    New York, NY
    3 days ago
  •  ...appgate.com.  About the Role We're looking for a AI/ML Engineer (Senior/Staff/Principal) - Agentic AI Security who will design, build, and...  ...algorithms, ML inference pipelines, and risk aggregation systems that power our autonomous Agentic AI threat detection... 
    Senior
    For contractors
    Worldwide

    AppGate Cybersecurity, Inc.

    New York, NY
    21 days ago
  •  ...Adonis is seeking a Senior Software Engineer to serve as the technical anchor of a growing backend AI team. You will design and ship agentic AI systems that scale, set engineering standards, and stay close to research to bring ideas into production. This is a high-ownership... 
    Senior

    Adonis Services

    New York, NY
    3 days ago
  • Senior C# Full-Stack Engineer - AI Data & Infrastructure About the Role What if your C# expertise could directly shape the infrastructure powering...  ...Senior C# Full-Stack Engineer to build and optimize the systems that leading AI labs depend on - from data pipelines and... 
    Senior
    C#
    Hourly pay
    Ongoing contract
    Contract work
    Freelance
    Remote work
    Flexible hours

    Alignerr

    New York, NY
    3 days ago
  • $127.9k - $195k

     ...Overview The Senior Applications...  ...intelligent, AI-enhanced web...  ...using C#, JavaScript,...  ...automation and agentic workflows—and...  ...new AI-powered software development as...  ...traditional software engineering and modern AI...  ...life cycle systems development...  ...Microsoft .NET (.NET Core; .... 
    Senior
    C#
    Work at office
    Remote work

    Ropes & Gray

    New York, NY
    2 days ago
  •  ...Description Senior Technical Architect...  ...delivery systems, constantly...  ...12+ years of software development experience...  ...of an AI-powered...  ...solution built on .NET, Angular,...  ...OpenAI, and Agentic AI technologies...  ...standards for C#, .NET, Angular...  ...Science, Engineering, Information... 
    Senior
    C#

    ECLARO

    New York, NY
    3 days ago
  • $170k

    Senior Software EngineerNew York City, New York|Software...  ...Deployed Engineer is one of the fastest...  ...don't need an AI background to land...  ...Software Engineer, .NET Developer, C# Developer, Python...  ...Consultant, or Systems Integration...  ...Build and deploy agentic AI applications within... 
    Senior
    C#
    Full time
    Remote work
    1 day per week

    SkillStorm

    New York, NY
    1 day ago
  • $117.2k - $313.7k

    Distributed Systems Software Engineer - Public Cloud (Senior/Lead/Principal) Salesforce is the #1 AI CRM, where humans with agents drive customer success together. Here, ambition...  ...leading workforce transformation in the agentic era? Agentforce is the future of AI, and you... 
    Senior

    Salesforce

    New York, NY
    3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior C#/.NET Software Engineer - AI & Agentic Systems. Be the first to apply!