Aptonet · 1 day ago
Dotnet Developer
NYC Metro Area
Contract
Onsite
Senior Level, Lead/Staff
8+ years expAptonet is seeking an experienced Full Stack Developer with strong C#/.NET skills to support mission-critical treasury and trading workflows. The role involves designing and building low-latency backend services and collaborating with business stakeholders to deliver well-engineered solutions.
Enterprise SoftwareInformation TechnologyStaffing AgencyTraining
Hiring Manager
Erika Ham
Responsibilities
Design, build, and support low-latency backend services in C#/.NET for trading, treasury, and/or order management systems
Develop robust APIs and service integrations to support real-time processing and high-throughput workflows
Apply object-oriented design principles and engineering best practices (e.g., SOLID, clean code, unit/integration testing)
Collaborate with business stakeholders (Treasury, Operations, Accounting, or Compliance) to translate requirements into well-engineered solutions
Troubleshoot production issues, perform root-cause analysis, and implement sustainable fixes with a focus on stability and performance
Participate in code reviews and contribute to standards for maintainability, observability, and operational excellence
Contribute to full stack delivery as needed; support UI development and enhancements (Blazor/DevExpress exposure is a plus)
Qualification
Required
8–10 years of professional software development experience, with a strong emphasis on C#/.NET
5–7 years of hands-on experience developing low-latency backend services supporting trading systems, treasury systems, and/or order management systems (OMS)
Deep knowledge of object-oriented programming and design patterns; ability to write high-quality, production-grade code
Experience delivering and supporting services in performance-sensitive environments (e.g., real-time or near real-time processing)
Strong understanding of software development lifecycle, version control, testing practices, and release management
Ability to communicate effectively with both technical teams and business stakeholders
Candidates must have meaningful exposure within a hedge fund or asset manager to at least one of the following functional areas: Treasury, Operations, Accounting, Compliance
C#/.NET – advanced proficiency
Backend services design – RESTful APIs, messaging/event-driven patterns, and service integration
Performance tuning – profiling, latency reduction, and efficient data handling
Strong analytical skills and attention to detail; comfortable working with complex workflows and data
Ownership mindset—able to drive work independently while collaborating effectively across teams
Calm and methodical under pressure when supporting production systems
Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience)
Preferred
Blazor development experience
DevExpress UI components experience
Exposure to front-end development within a .NET ecosystem
Company
Aptonet
Aptonet delivers innovative IoT, operations research, mobility & web solutions along with staffing services with a focus on professionalism.
201-500 employees
H1B Sponsorship
Aptonet has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2024 (7)
2023 (9)
2022 (13)
2021 (9)
2020 (6)
Funding
Current Stage
Growth StageCompany data provided by crunchbase