Senior Software Developer

Trimark Associates, Inc.

. Design, develop, test, and maintain new features within the T1-S Vantage platform .

Posted 9/21/2026full-timeRemote • California • United StatesSenior💰 $120,000 - $170,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in C# and .NET for developing scalable applications, with a strong focus on RESTful API design, cloud-native solutions, and performance optimization. Proven ability to lead technical projects, mentor developers, and advocate for engineering best practices in Agile environments.

Highest-signal resume keywords

C# Development.NET FrameworkRESTful API DesignAgile MethodologiesCloud-Native Applications

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentObject-Oriented DesignSQL Performance OptimizationWeb Application DevelopmentDebugging and TroubleshootingData ModelingASP.NET CoreXUnit TestingTypeScriptEvent-Driven Architecture

Soft Skills

Communication SkillsMentoringCollaborationAnalytical SkillsTechnical Leadership

Tools & Technologies

Microsoft SQL ServerPostgreSQLAzureDockerKubernetesGitCI/CD PipelinesDevOps Practices

Industry Keywords

Industrial AutomationSCADATelemetryOperational TechnologyEnergy MarketsRegulatory ComplianceModbusDNP3OPC-UAICCP

Tech Stack

Tools & technologies

AngularASP.NETAzureCloudDistributed SystemsDockerJavaScriptKubernetesMS SQL ServerPostgresReactSQLTypeScript.NET

About the role

Key responsibilities & impact

Design, develop, test, and maintain new features within the T1-S Vantage platform
Build scalable, high-performance applications using C# and .NET
Develop and maintain RESTful APIs, backend services, and distributed application components
Create and enhance web-based user interfaces using modern web technologies
Write clean, maintainable, and well-documented code following established engineering standards
Participate in architectural planning and technical design discussions
Improve the performance, reliability, and scalability of mission-critical applications
Design solutions for large volumes of operational, telemetry, and time-series data
Integrate software with industrial devices, third-party systems, data historians, and external services
Support cloud and on-premises deployments across customer environments
Contribute to software security, observability, monitoring, and operational readiness
Lead development efforts for major features and initiatives
Mentor junior and mid-level developers through code reviews and technical guidance
Advocate for engineering best practices, coding standards, and software quality
Collaborate with cross-functional teams to define technical requirements and implementation strategies
Assist in estimating work, planning releases, and managing technical risk
Participate in Agile activities including sprint planning, standups, reviews, and retrospectives
Identify opportunities to improve software architecture, development processes, and team productivity
Evaluate emerging technologies and recommend solutions aligned with business objectives
Contribute to technical documentation and knowledge-sharing initiatives

Requirements

What you’ll need

Bachelor's degree in Computer Science, Software Engineering, or a related technical field, or equivalent practical experience
7+ years of professional software development experience
Proven experience developing and maintaining enterprise software applications
Experience working on complex, distributed, or mission-critical systems
Demonstrated ability to lead technical projects and mentor other developers
Strong proficiency in C# and .NET
Strong understanding of object-oriented design principles and software architecture patterns
Experience designing and developing RESTful APIs
Experience with Microsoft SQL Server and relational database design
Strong knowledge of SQL, performance optimization, and data modeling
Experience building modern web applications using HTML, CSS, and JavaScript
Familiarity with source control systems such as Git
Experience working within Agile software development environments
Strong debugging, troubleshooting, and analytical skills
Excellent verbal and written communication skills
Ability to work independently while collaborating effectively across teams
Must be legally authorized to work in the United States for any employer
This position is not eligible for visa sponsorship
Experience with both modern ASP.NET Core (.NET 8+) and legacy ASP.NET MVC/WebForms web applications
Experience with .NET testing frameworks and principles, specifically xUnit
Experience with TypeScript, Angular, React, or similar modern front-end frameworks
Experience with PostgreSQL and time-series databases
Experience building cloud-native applications in Microsoft Azure
Familiarity with containerization technologies such as Docker and Kubernetes
Experience with message-based and event-driven architectures
Experience with CI/CD pipelines and DevOps practices
Understanding of networking fundamentals and distributed systems
Experience with industrial automation, SCADA, telemetry, or operational technology environments
Familiarity with power generation, utility operations, energy markets, or regulatory compliance systems
Knowledge of industrial communication protocols such as Modbus, DNP3, OPC-UA, or ICCP
Candidates must reside in the United States

Benefits

Comp & perks

Direct impact on systems supporting real-time utility operations across the U.S.
Gain deep exposure to data, infrastructure, APIs, and distributed systems
Collaborate directly with experienced developers and domain experts
Clear path to move into a software engineering role