csharp jobs in San Diego

Software Engineer I will develop, test, and maintain features across a full application stack—including UI components, APIs, business logic, and database layers—under mentorship from a Lead Software Engineer. Responsibilities include translating wireframes and requirements into responsive interfaces, implementing data validation and security controls, building integrations, writing clean code with automated tests, and participating in code reviews and pair programming.…See more The role emphasizes using AI-assisted development tools effectively while maintaining high coding standards and version control discipline.

Design, develop, test, and maintain web applications supporting mission-critical U.S. Navy information systems.…See more Build responsive user interfaces using Angular, Bootstrap, HTML, and CSS; develop backend functionality with Java and SQL; participate across the full software development lifecycle from planning through deployment. Support DevSecOps and CI/CD practices, troubleshoot production issues, and collaborate with technical teams and end users to deliver secure, reliable solutions.

Lead a software engineering team developing embedded control systems, with responsibility for planning, design, and technical oversight of development activities. Perform complex software and control system engineering work, including functional testing, troubleshooting, and documentation of findings.…See more Apply strong C# and .NET expertise (including WPF/XAML) to build tactical user interfaces following object-oriented design patterns and MVVM architecture. Requires 6+ years of engineering experience (or equivalent with advanced degree), demonstrated mastery of software engineering principles, and the ability to obtain a DoD security clearance.

Sr SW Test Development Engineer responsible for executing and developing test cases and interfaces for firmware validation in next-generation CGM (continuous glucose monitoring) transmitters in an FDA-regulated environment. The role requires designing test plans, traceability matrices, and comprehensive documentation while identifying and mitigating technical risks.…See more The engineer will work with analog/digital hardware interfaces, low-power systems design, and embedded software, and contribute to process improvements and cost optimization. Requires 5+ years Java and OOP experience plus 2+ years hands-on firmware or hardware testing.

Senior Software Architect role leading technical strategy for complex manufacturing systems including additive manufacturing, machine control software, MES/ERP integrations, and fleet telemetry. Requires 8+ years of software engineering with 3+ years in architect/principal engineer roles, deep proficiency in C++, Rust, Python, C#, or Go, and hands-on experience with real-time systems, edge computing, motion control, and high-rate sensor data processing.…See more Responsibilities include architectural design, mentoring engineering teams, trade-off analyses, and cross-functional collaboration on New Product Introduction cycles, with expectation to operate credibly at both executive and hands-on technical levels.

Senior Software Engineer responsible for designing, building, and maintaining secure, fault-tolerant distributed systems for sequencing data transfer, storage, and management. Contribute to CI/CD pipelines, evaluate component designs, collaborate across software teams, and drive innovation while troubleshooting complex customer issues.…See more Required expertise in C# and .NET/Core with 5+ years of software development experience; strong background in distributed systems patterns, testing frameworks, and quality practices essential.

Senior Microsoft Forward Deployed Engineer who will design, build, and deploy GenAI/LLM-powered solutions for government clients, translating business problems into production-grade AI systems. The role requires 7+ years of software/data engineering experience, 1+ years hands-on with GenAI/LLM solutions, and deep expertise in Microsoft Azure (AI Foundry, OpenAI, AI Search), Python/TypeScript/C#, and Copilot extensibility.…See more You will lead project workstreams, work directly with client technical teams in fast-paced environments, and mentor others while building reliable, maintainable, well-documented code. 50% travel required.

The Automation Test Engineer designs, implements, and maintains automated test infrastructure and scripting environments for advanced radio systems and modem technologies. Responsibilities include developing automated test scripts, creating APIs and user interfaces for test systems, operating RF test equipment (spectrum analyzers, signal generators, etc.), performing data analysis to diagnose performance issues, and supporting systems engineering of proprietary wireless communications technologies.…See more The role requires proficiency in VB.NET, C#, and Python; knowledge of embedded Linux development tools, device drivers, and object-oriented design; and hands-on experience with test automation frameworks and RF/wireless test equipment.

The IT Business Analyst supports AMETEK's business operations through custom application development and enterprise solutions, including Oracle ERP and Microsoft Power BI. The role requires translating business requirements into IT solutions, managing custom applications, developing reports, and supporting AI initiatives by making data available to AI platforms.…See more Responsibilities include handling compliance reporting, end-user support, and application documentation. The position demands 5+ years of IT business analysis experience, 3+ years of ASP.NET or equivalent custom coding, and demonstrated experience in a manufacturing environment.

BAE Systems seeks an experienced Software Lead/Architect to design, develop, debug, and deploy complex real-time C4ISR software solutions across the full development lifecycle. The role requires hands-on technical leadership, customer engagement, and mentoring of cross-functional teams while working with Java, C++, and/or C#.…See more Responsibilities include software architecture, version control, Agile practices, and build automation. The position demands an active Top Secret/SCI clearance and experience in distributed systems, mission planning, or military simulations.

Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI, C#, XAML, and C++. Define best practices for Windows development, drive accessibility efforts across Microsoft UI Automation frameworks, and take full ownership of feature lifecycles from conception through maintenance.…See more Collaborate with product designers, UX researchers, and QA to shape the Windows platform roadmap. Diagnose and resolve complex bugs, performance bottlenecks, memory leaks, and compatibility issues while mentoring other engineers and conducting code reviews.

Join Axos Bank's Application Developer Rotational Program as a full-time developer gaining exposure across front-end and back-end technologies. You will create customer experiences using HTML, CSS, and JavaScript; develop interfaces with .NET; design low-code platform solutions; and work with document management and OCR systems.…See more The role requires a bachelor's degree in IT, Computer Science, or related field with 1+ years of experience, and familiarity with Java, C#, SQL Server, APIs, and object-oriented programming.

The Principal Software Engineer leads architecture and technical strategy for a Class III active implantable medical device, overseeing embedded firmware, mobile, web, and cloud systems. The role requires translating clinical, regulatory (IEC 62304, FDA PMA), and business needs into compliant, scalable designs while establishing architecture frameworks, design principles, and coding standards for the engineering team.…See more Responsibilities include leading architecture reviews, design control activities, hazard analysis, verification strategy, and mentoring across firmware, application, and cloud domains. The position demands 15+ years of software engineering with 8+ years in regulated medical device environments, hands-on expertise in .NET/C#/Blazor, Azure services, embedded firmware, cross-domain system integration, and strong cybersecurity practices for connected implantable devices.

Join Illumina's Primary Analysis team to design and develop high-performance signal processing software for genomic data analysis. You will architect C/C++ solutions for multi-threaded, real-time applications running on Linux, optimize algorithms for genomic base calling from image signals, and collaborate across bioinformatics, instrument design, and quality teams.…See more The role demands expertise in memory management, performance optimization, debugging tools, and unit testing, with 8+ years of professional software development experience.

An Applications Engineer will own technical support for manufacturing clients while gradually growing into active development of VersaCall's andon and production monitoring platform. The role requires troubleshooting software and hardware issues, configuring and deploying systems, working with internal scripts and APIs, and reading/contributing to a complex codebase across multiple services.…See more The successful candidate will combine client-facing communication with hands-on debugging and eventual feature development, growing into an in-house platform expert. Required experience includes 2–4 years in technical support, software development, or systems engineering, with a modern web stack (React, C# .NET, JavaScript, SQL, Docker, Git).

Senior Software Engineer supporting next-generation tools and systems development at a defense/intelligence contractor. Responsibilities include designing and implementing AI-assisted web-based applications that integrate with custom embedded systems, writing requirements and test documentation, executing tests, and interfacing with customers on requirements and design reviews.…See more Requires 6+ years of software engineering experience, proficiency in Python, C# or Rust, JavaScript/TypeScript, HTML/CSS, Linux systems expertise, web-based UI development skills, and network software engineering knowledge (TLS/HTTPS). Must hold or be able to obtain a DoD SECRET clearance.

BAE Systems seeks a Software Engineering Intern III for Summer 2027 to develop new code, resolve critical problems, and improve system stability within the Electronic Systems division. The intern will work alongside experienced engineers on real-world aerospace and defense projects, gaining hands-on experience with modern software architectures, frameworks, and databases.…See more Required skills include proficiency in Java, C++, C#, Python, or JavaScript, along with knowledge of data structures and object-oriented programming. The role offers exposure to cloud platforms (AWS, Azure), containerization (Kubernetes, Docker), frontend frameworks (React, Angular), backend tools (Spring, Gradle), and various databases (SQL, NoSQL).

Staff Software Engineer at Illumina's Primary Analysis team designing high-performance signal processing pipelines for genomic data analysis. The role involves architecting C/C++ software for multi-threaded, memory-optimized Linux applications that detect genomic signals from images, with responsibilities including algorithm development, performance optimization, debugging, and collaboration across bioinformatics, instrument design, and quality teams.…See more Requires 8+ years of professional software development experience, deep expertise in C/C++, multi-threading, memory management, and debugging/profiling tools, plus strong object-oriented design and unit testing practices.

This role focuses on system-level testing and validation of Qualcomm's leading-edge SoC products (Snapdragon, mobile, compute, automotive, server chipsets). The engineer will conduct early-stage silicon bring-up, post-silicon validation, and develop automated test content to stress systems across functional, performance, stability, and benchmark dimensions under various operating conditions.…See more Responsibilities include hardware characterization, software integration testing, creation of production screens, and collaboration with IC design and development teams. The position requires proficiency in embedded systems, SoC testing concepts, test case development, lab instrumentation, and programming in C/C++, Python, or C#.

Software Engineer in R&D for medical device products, working on desktop applications, services, and data layers for automated molecular diagnostic instruments. Requires C# and .NET expertise with 5+ years of experience (or 3+ with MS degree), along with proficiency in WPF, MSSQL, LINQ, and multithreaded UI development.…See more Role involves design, development, code review, testing, and mentoring junior engineers within an Agile team environment.

Lead Veracyte's Quality Engineering Platform team as Manager of Software Test Automation, defining quality strategy and building scalable automation frameworks that enable product teams to own software quality. Manage a team of SDETs, Automation Engineers, and Quality Platform Engineers to develop self-service testing platforms, reusable automation libraries, and AI-assisted quality tools supporting unit, integration, API, UI, end-to-end, regression, performance, security, and compliance testing.…See more Establish modern engineering practices, quality standards, and reference architectures across the organization while fostering a culture of innovation and continuous improvement. Drive Veracyte's strategy for AI throughout the software testing lifecycle, including automated test generation, regression analysis, defect classification, and synthetic test data creation.

Design and develop software applications that orchestrate complex automated laboratory workflows and closed-loop learning systems for biotherapeutics discovery. Build data pipelines, visualization tools, and machine learning models for visual inspection, predictive maintenance, and process optimization.…See more Create digital lab infrastructure including IoT integrations, digital lab twins, and telemetry monitoring. Requires a Ph.D. in Computer Science, Software Engineering, or Bioengineering with 3+ years of industry experience, or equivalent education with more experience; strong proficiency in Python, SQL, JavaScript, and DevOps practices; and familiarity with lab data platforms and autonomous systems.

Design, develop, customize, and maintain websites built on the .NET framework in an AWS cloud environment. Gather requirements from users, write unit and integration tests, troubleshoot system-level issues independently, and create technical documentation.…See more Requires 3+ years of web development experience with .NET, C#, JavaScript, WebAPI.NET, HTML, CSS, GitHub, IIS, SQL/MySQL, and AWS services including Glue Jobs and S3.

Software Engineer I at Fuse will develop embedded communications, networking, and computing solutions for U.S. defense agencies.…See more The role involves contributing to the full software development lifecycle—from kernel to UI—including design, implementation, testing, code review, and security integration across airborne, maritime, and ground platforms. The ideal candidate holds a BS in Computer Science and has academic or professional experience with strongly typed languages (C/C++, Java, C#, Rust, Go, or Zig), design patterns, and agile development practices. Nice-to-have skills include Linux/DevOps, Python/Bash scripting, networking protocols, CI/CD, build systems, React/web stacks, and containerization.

HII Mission Technologies seeks a Software Engineer 2 to support Navy software modernization and integration within the NIWC Pacific portfolio. You will design, develop, test, and maintain mission-critical software applications using C# and Angular, implement front-end features and UI components, and troubleshoot issues in distributed Navy systems.…See more The role requires strong C# fundamentals, experience with modern object-oriented frameworks, secure coding practices, and collaboration with government engineers and cross-functional teams. You'll work on a hybrid schedule (1–2 days onsite per week) in San Diego, supporting command-and-control, data management, and mission-support functions.