Senior Full-Stack Software Engineer - Banking Platforms

Senior Full-Stack Software Engineer

Banking Platforms & AI Modernization

About Us

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Instantiations is a leader in custom software solutions, serving clients from the largest global enterprises to innovative small businesses. At the core of our success is a cohesive team of talented developers and forward-thinking leadership, working together to tackle complex challenges with creativity and collaboration.

We pride ourselves on fostering a culture of mutual respect, innovation, and continuous growth, where team members genuinely look forward to contributing and thriving. With a 100% remote work setup, we offer the flexibility to work from almost anywhere within the United States while being part of a close-knit, supportive community that values your expertise and individuality.

About the Role

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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.

Employment Requirements

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Because we serve banking customers in a regulated environment, a few things are non-negotiable:

• 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

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* 7+ years of software development experience with a strong focus on Smalltalk and/or Java pr...