Staff Software Engineer

Maximum Technologies, Inc.; United States; Remote; USD 150,000 - 190,000; Full time

Job summary

Maximum is building a core banking platform. As a Staff Software Engineer, you will own a domain service end-to-end, define its API, and drive cross-service decisions across a large, distributed system. You will write design docs, review architectures, and guide teams as they adopt AI coding agents.

You will champion reliability with replay-safe patterns, plan migrations, and ensure data consistency. Strong back-end skills in Go or other statically typed languages, plus SQL mastery, are required

Qualifications

• Shipping backend services in a statically typed language (Go preferred).
• Experience with Java, C#, Rust or TypeScript is welcome.
• Deep SQL experience incl. isolation levels, indexing, migrations across services with zero downtime.
• Led a distributed system spanning multiple services with real dependency testing.
• Experience aligning AI coding agents in team processes and reviews.
• Strong technical writing; design docs as influence tools.

Responsibilities

• Own a domain service end to end: boundaries, contracts, event schemas and data flow.
• Define patterns for resilient workflows that survive partial failure (replay-safe, idempotent, resumable).
• Tackle cross-service correctness: reconciliation, ordering across streams, cross-checking data.
• Plan and lead migrations and schema changes across services against live data.
• Set team practices for AI coding agents: trust boundaries, review workflows, and safety.
• Translate regulations and partner requirements into scalable designs for multiple teams.
• Mentor senior engineers through design and code reviews and pairing on hard problems.

Skills

Go

Java

C#

Rust

TypeScript

Tools

gRPC

SQL

Job description

Maximum is AI infrastructure for banks, delivering an operating system purpose-built for the next century of banking. By embedding intelligence natively at the foundation, Maximum empowers banks to automate complex operations, surface real-time insights, and drive growth with innovative financial products. The entire platform is engineered from the ground up to defend against modern, sophisticated threats protecting the bank and its customers.

About the Role

Maximum is building a core banking platform. Not a layer on top of a legacy core: the ledger, product, payments, card and compliance systems a bank actually runs on. As a Staff Software Engineer, you would own a domain service outright: its schema, its API, its workflows, its tests. When a change touches twelve other services, you follow it into all twelve. You still write code, usually on the hardest path. We use AI coding agents heavily, and you would shape how the team uses them.

Responsibilities

• Own a domain service end to end: service boundaries, gRPC contracts, event schemas, and how data flows between them. Write the design docs that settle cross-service decisions, and run the reviews that test them.

• Set the patterns other engineers build on for workflows that survive partial failure: replay-safe, idempotent, and resumable from the step that broke.

• Own the correctness problems that span services: reconciliation, ordering across event streams, and data that must agree in two places.

• Plan and lead migrations and schema changes that cross service boundaries and run against live data.

• Set the team’s practices for AI coding agents: what they are trusted with, how their output is reviewed, and where they are kept out.

• Turn regulations, partner bank requirements and vendor specs into designs that several teams can build from.

• Raise the bar for Senior engineers through design review, code review and pairing on hard problems.

Qualifications

_ Must Have _

• Several years shipping backend services in a statically typed language. Go preferred. Strong experience in Java, C#, Rust or TypeScript etc. is also welcome.

• Deep SQL experience: isolation levels and their failure modes, query plans under real load, indexing, and migrations planned across several services with zero downtime.

• You have led a distributed system that spans multiple services and you can explain the tradeoffs you got wrong.A testing habit, and an argument for why you test against real dependencies rather than mocks.

• You can take an ambiguous problem, find the real one underneath, and write it up so clearly that other engineers can start building.

• You have changed how a team works with AI coding agents, and you know where they fail in ways a reviewer can miss.

• Clear technical writing. Much of your influence will come from design docs.

_ Nice to Have _

• Banking, payments, ledger, card or ACH experience helps. We can teach the domain. We would rather hire for judgment.

• Experience working with auditors, partner banks or regulators on a system you owned.