> Markdown version of [/jobs/ext/3050154-senior-core-applications-developer](https://www.wearedevelopers.com/jobs/ext/3050154-senior-core-applications-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Core & Applications Developer - **Company:** Mission Fed - **Location:** San Diego, CA, United States (Remote available) - **Experience:** Expert - **Salary:** $105,000.0 - $128,000.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), PHP (Programming Language), Agile Methodology, IBM AIX, Unix, C++ (Programming Language), Cascading Style Sheets (CSS), Code Review, Information Systems, Computer Programming, Perl (Programming Language), Systems Analysis, JQuery, Object-Oriented Software Development, Scrum Methodology, Software Engineering, Strategies of Testing, Extensible Markup Language (XML), Information Technology - **Published:** September 24, 2026 - **Apply:** https://www.thejobnetwork.com/job/senior-core-applications-developer-509978639 ## About the Role Bachelor's degree in Information Systems, Computer Science, Software Development, Systems Analysis, or a related field, or equivalent combination of education and experience. Minimum of 4 years of programming experience with strong knowledge of systems design and computer operations. Extensive experience with Symitar Episys is strongly preferred. Experience developing with: PowerOn Programming Language SymConnect / SymXchange SymForm PDF HTML, JavaScript, CSS, jQuery, and XML Strong understanding of software development lifecycle, testing methodologies, and application support. Experience working in Agile and Scrum environments is highly preferred. Knowledge of AIX/UNIX environments is a plus. Experience with C++, Perl, PHP, Java, or other object-oriented programming languages is beneficial. ITIL certification is a plus. ## Description We're looking for a Senior Core & Applications Developer to join our Core Processor Application Development team. This role is critical in supporting and enhancing our core banking environment, leading complex development initiatives, mentoring fellow developers, and helping drive the future of our technology landscape. What makes this opportunity exciting? A Core Systems Expert! You'll serve as a key technical resource responsible for developing, supporting, and enhancing our Symitar Episys core platform and related applications. You'll design highly efficient solutions that improve processes and support exceptional member service. A Problem Solver at Heart! You'll research, analyze, test, and implement solutions to complex business and system challenges while providing innovative recommendations that help departments operate more effectively. A Technical Mentor! While this role does not have direct reports, you'll provide guidance to other developers, participate in code reviews, share best practices, and help elevate the overall capabilities of the team. A Partner Across the Organization! You'll collaborate closely with business units, vendors, and technical teams to deliver projects that support strategic business initiatives and improve operational efficiency. Passionate About Building the Future! You'll help identify opportunities to modernize processes, improve integrations, and leverage new technologies that support our evolving business needs. Agile and Adaptable! You'll be part of a fast-paced environment where innovation, continuous improvement, and teamwork are highly valued. ## Related Videos - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [WeAreDevelopers LIVE - the weekly developer show with Chris Heilmann and Daniel Cranney](https://www.wearedevelopers.com/videos/1309-wearedevelopers-live-the-weekly-developer-show-with-chris-heilmann-and-daniel-cranney) - [WeAreDevelopers LIVE - Node and Package Security](https://www.wearedevelopers.com/videos/2138-wearedevelopers-live-node-and-package-security) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Meta Harnesses: What the JS Framework Wars Teach Us About What Is Next for AI Agents](https://www.wearedevelopers.com/videos/100353-meta-harnesses-what-the-js-framework-wars-teach-us-about-what-is-next-for-ai-agents) - [The Time Paradox: Building Timezone-Safe Python/Django Applications](https://www.wearedevelopers.com/videos/1915-the-time-paradox-building-timezone-safe-python-django-applications) ## Related Articles - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)