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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full-Stack Software Engineer - Banking Platforms - **Company:** Instantiations, Inc. - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $110,000.0 - $150,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Artificial Intelligence, Apache Tomcat, Microsoft Azure, Collaborative Software, Databases, Continuous Integration, IBM DB2, DevOps, Middleware, IBM WebSphere MQ, IBM Websphere Application Server, PostgreSQL, Microsoft SQL Server, Message Queuing Telemetry Transport (MQTT), OAuth, Object-Oriented Software Development, Oracle (Applications), Systems Development Life Cycle, Zero Trust Network Access, Simple Object Access Protocol (SOAP), Software Engineering, WS-Security, Scripting, Multi-Agent Systems, Git, Kubernetes, Information Technology, Smalltalk, Restful APIs, Docker, Service Stack - **Published:** June 29, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=75c1a9dd3a6ab3dd ## About the Role Do you have experience in Writing skills?, Do you have a Bachelor's degree?, * You must reside in the United States and not require visa sponsorship now or in the future * You must communicate in clear, fluent English - reading, writing, and speaking - to work effectively with clients, teammates, and stakeholders * You must be able to pass a clear background verification * Work and customer support must be performed while physically located in the United States * Willingness to serve in the on-call rotation Work Experience Requirements * 7+ years of software development experience with a strong focus on Smalltalk and/or Java programming * 7+ years in a senior full-stack software engineer role * Prior direct customer experience, problem solving with the customer * Bachelor's degree in computer science or equivalent field, preferred * Experience in banking, financial technology, insurance, healthcare, or other regulated industries is a strong plus * Excellent problem-solving skills and the ability to work independently in a remote environment * Strong understanding of software development life cycles, agile methodologies, and remote collaboration tools * Strong and effective communication skills, with the ability to articulate complex technical concepts to non-technical stakeholders * Possess a deep commitment to positive customer outcomes * Leadership qualities, including the ability to mentor junior team members and lead by example, AI engineering is a core part of this role - not prototypes, but practical, enterprise-grade solutions. Experience with agentic systems, retrieval-augmented architectures, AI evaluation, security considerations, and integration with existing business platforms is highly valued., Our team is tight-knit and genuinely supportive of one another. The engineers who do best here are self-directed and accountable, but they never have to go at it alone. You'll fit right in if you: * Have strong object-oriented fundamentals, especially in VA Smalltalk or Java * Are comfortable working across both legacy and modern systems * Communicate clearly with technical and non-technical audiences * Take ownership while also being a collaborative teammate * Care about reliability, security, and customer trust ## Description We are selectively seeking one highly skilled, senior-level full-stack software engineer to join our fintech business unit supporting banking customers across North America. This is a hands-on role spanning the full software development lifecycle - design, development, implementation, modernization, maintenance, production support, and customer-facing technical collaboration., Smalltalk, a purely object-oriented programming language, powers a core part of our banking platform. Strong object-oriented development is at the heart of this role. * The ideal candidate is a VAST Platform (VA Smalltalk) and Java expert * We would be open to a very strong Java expert who possesses the highly desired skills (listed below) and who is genuinely excited to learn the VAST Platform + We would be willing to support a small ramp up for a highly skilled Java expert who is also deeply skilled in the other technology stacks listed below Highly desired skills and practical experience in the following: * Experience with the VAST Platform * Enterprise AI engineering * Databases: DB2, SQL Server, Oracle, or PostgreSQL * CI/CD, DevOps, and related tooling (Git, Docker, Kubernetes, Azure DevOps, etc.) * Middleware: + Engineer and harden enterprise runtimes (IBM WebSphere, Tomcat) and messaging fabrics (IBM MQ, MQTT), implementing zero-trust security (mTLS, OAuth2, WS-Security) across all RESTful and SOAP interfaces. * Python scripting and automation What You'll Do * Design, develop, enhance, maintain, and support software across multiple application stacks * Work across the full SDLC: requirements, design, coding, testing, implementation, support, and ongoing improvement * Support client implementation activities, production issue analysis, and customer-facing technical discussions * Contribute to modernization initiatives and AI-enabled capabilities integrated into banking platforms * Participate in 24/7 production support on a reasonable on-call rotation schedule (stipend paid for on-call) ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Agentic employees in world's most downloaded FinTech app](https://www.wearedevelopers.com/videos/100123-agentic-employees-in-world-s-most-downloaded-fintech-app) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [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) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers)