Platform Engineer - AI

TechGrove is the Centre of Excellence for Banyan Software, based in Chennai, India. It plays a key role in supporting Banyan’s global businesses through technology, security, and software development. TechGrove brings together India’s deep pool of technical talent with Banyan’s long-term approach to growth, creating a trusted, developer-focused environment where people can do their best work.

About the role
HWA International builds the trust accounting software that bank trust departments, credit unions,
foundations, and family offices run their fiduciary operations on. We are an AI-first engineering
organization, and agentic coding tools are how we build. Our platform is in a significant modernization,
and this role is one of the engineers who builds it.
Agentic tooling lets us understand existing behavior and specify what comes next far faster than that
work could be done by hand. You will use it to do exactly that, then build the modern platform end to
end: the C# and .NET services, the web front end, and the AWS infrastructure they run on. This is a full-
stack role, and you own the infrastructure your work runs on.
Accounting accuracy is the product, so correctness is the bar. Anything new has to produce the same
results as what it replaces, or better, and proving that is part of the job.
You will work within an architecture set by engineering leadership, with real influence on it. We work to
modern engineering standards: trunk-based development on GitHub, continuous integration,
infrastructure as code, and feature flags.
What you will do
• Build the modern platform across the stack. Write features, services, and fixes in C# and .NET,
and the web front end that sits on them, against the architecture and patterns the team has set.
• Own the infrastructure for what you deliver. Within the cloud architecture engineering
leadership sets, define and maintain your AWS environments as code, along with the
networking, managed databases, and services behind them, so every environment is
reproducible and version controlled.
• Own delivery and observability. Build and run the CI/CD pipelines, staged rollout, and feature
flags that take your work to production, and the monitoring, logging, and alerting that tell us
how it behaves there.
• Work out what existing code does and write it down. Use agentic tooling to analyze established
application and database logic, then produce a clear written specification of the behavior that
has to be preserved.
• Move business logic into application code and prove it matches. Relocate rules wherever they
live today, including inside the database, into maintainable, tested application code. Build the
data migration paths and test harnesses that show the modern platform's calculations match
the existing ones.

• Verify what the tools give you. Agentic tooling drafts the analysis, the documentation, and
much of the code. An agent's account of what existing code does is a hypothesis until you have
read the code and confirmed it. Characterization tests come before behavior changes.
• Own the work in production. Whatever ships under your name is yours, from the first analysis
through to how it behaves in production. Take part in incident response, communicate clearly
while an issue is open, and follow through to root cause and a durable fix.
What we are looking for
You do not need to be an expert in every layer. Agentic tools let one strong engineer work across the full
stack and the infrastructure under it, so we look for depth where judgment matters most, enough
working knowledge everywhere else to direct the tools and catch their mistakes, and fluency with the
tools from day one.
Where you need depth
• Several years of professional C# and .NET development, with production code you can describe
and defend.
• Strong relational database skills: schema design, query tuning, and correct transaction and error
handling by reflex. PostgreSQL experience strongly preferred.
• Demonstrated ability to work out what unfamiliar code does, including code written in a
language or platform you have not used before, and a repeatable method for doing it safely.
• Agentic coding is table stakes. Deep, hands-on fluency with agentic tools (Claude Code, GitHub
Copilot, Cursor, or similar) as your primary way of working on real production code, from day
one, with the judgment to treat what they produce as work to be checked rather than answers
to be shipped.
Where working knowledge is enough
• Front end: a modern web framework, React with TypeScript preferred.
• Cloud: AWS (Azure considered), infrastructure as code, networking, managed databases, and
containers.
• Delivery: CI/CD with automated testing and zero-downtime deployment, plus production
monitoring and alerting.
Across everything
• Git and GitHub, with trunk-based development and short-lived branches.
• Comfort owning quality on a system that cannot fail quietly: disciplined testing, observability,
and careful, staged rollout.
• Clear written and spoken English, because much of your working contact with the team is
written.
• Availability to work hours that overlap the first half of the US Eastern working day, so you work
with your counterparts rather than around them.
Nice to have

• Experience in financial services or another regulated, high-stakes domain. Trust accounting,
wealth management, or fiduciary services is a strong plus but is not required. We will teach the
domain to the right engineer.
• Experience modernizing an established business application onto a cloud-native stack.
• AWS certification or equivalent depth in security, identity, and cost management on AWS.
• Building software under SOC 1 / SOC 2 or comparable regulated-environment controls.

Recruitment Notice

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