> Markdown version of [/jobs/ext/4330972-senior-application-developer](https://www.wearedevelopers.com/jobs/ext/4330972-senior-application-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 Application Developer - **Company:** Cogency Global Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Logic, Application Services, Automation of Tests, C Sharp (Programming Language), Code Review, Databases, Continuous Integration, Linux, Information Extraction, PostgreSQL, Scrum Methodology, Standard Sql, Software Engineering, AI Coding Agents, Event Driven Architecture, Restful APIs, Serverless Computing - **Published:** October 8, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=75df9286af6b8907 ## About the Role * 7+ years of professional software engineering, with significant time building and supporting customer-facing or technology enablement products. * Expert in Java or C#, with working fluency in the other; comfortable picking up new languages and frameworks quickly. * Strong SQL and data modeling skills, including moving business logic from the data tier into application services; experience with PostgreSQL. * Hands-on AWS experience building and running services on Linux (containers, serverless, messaging, managed databases) with infrastructure as code. * Has designed and built REST APIs and asynchronous, message-based integrations. * daily use of AI-assisted development tools, including agentic coding workflows, with sound judgment about verifying correctness, security, and maintainability. * Strong engineering hygiene: automated testing, CI/CD, code review, and observability. * Experience working in scrum teams and mentoring other engineers. ## Description * Own significant pieces of roadmap delivery, such as an application, a business domain, or a shared service, from analysis of code and data through production on AWS. * Analyze existing code base with patience and precision, surface the real business rules, and re-express them as clean, well-tested service code. * Build APIs and event producers and consumers that are contract-first, idempotent, observable, and easy for other teams to use. * Write infrastructure and pipelines alongside application code so every service is reproducible, monitored, and secure by default. * Prototype and harden AI-enabled features such as document understanding, retrieval, and agent tools, working with leads on evaluation and guardrails. * Use approved AI coding assistants and agents to accelerate refactoring, test generation, and documentation; independently verify correctness, security, and maintainability; and show teammates how to do the same well. * Pair and review generously, helping engineers who are new to AWS, PostgreSQL, event-driven design, and modern patterns become productive quickly. * Take technical direction from the Development Lead and work with the Manager of Application Development, to help the team grow its modern engineering skills. * Contribute reference implementations and templates, in partnership with Platform Developers and architects, that follow shared engineering standards and are adopted across scrum teams.