Senior Software Engineer, Applications

Nayya

. Build and own full-stack features across the Northstar product, from Rails/Python/TypeScript services to React front ends .

Posted 9/22/2026full-timeNew York City • New York • United StatesSenior💰 $188,000 - $230,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in full-stack development with a strong focus on Rails, React, Python, and TypeScript, while ensuring application security and compliance with industry standards. Proven ability to mentor engineers and manage services end-to-end, from design to deployment, in a regulated environment.

Highest-signal resume keywords

Full-Stack DevelopmentRailsReactPythonTypeScript

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Full-Stack DevelopmentRailsReactPythonTypeScriptRelational DatabasesApplication SecurityAI Tooling EvaluationMonitoringIncident Response

Soft Skills

Excellent CommunicationMentoring

Tools & Technologies

PostgresAWSHerokuDatadog

Certifications & Qualifications

HIPAASOC 2

Industry Keywords

FintechWealth ManagementInsuranceRegulated Industry

Tech Stack

Tools & technologies

AWSCloudHerokuPostgresPythonReactRuby on RailsTypeScript

About the role

Key responsibilities & impact

Build and own full-stack features across the Northstar product, from Rails/Python/TypeScript services to React front ends
Identify, propose, and execute architecture changes to the Northstar system
Design data models and workflows supporting financial planning, adviser-client relationships, and sensitive financial information
Proactively identify technical debt and help the team keep it in check
Partner with Northstar advisers and the product team to translate adviser workflows into software
Take ambiguous problems from requirements through implementation and release
Identify security concerns in code review and partner with the security team on remediation
Evaluate AI libraries and tools while considering application security, maintenance, data privacy, and sensitive client data
Own services end-to-end through design, deployment, monitoring, and on-call
Mentor engineers and contribute to cross-team technical decisions, design reviews, and code reviews
Communicate with advisers, clients, and executives and build cross-team buy-in

Requirements

What you’ll need

5+ years of professional software engineering experience, with real depth in full-stack development
Strong production experience with Rails, React, Python, and TypeScript
Comfort working with relational databases (Postgres) and cloud infrastructure (AWS, Heroku)
Experience owning services in production, including monitoring, on-call, and incident response using Datadog
Track record of taking ownership of features end-to-end, from ambiguous problem to production
Working knowledge of application security practices and experience raising security concerns in code review
Excellent written and verbal communication
Comfort working with sensitive data and an instinct for building things responsibly
Experience in fintech, wealth management, insurance, or another regulated industry (nice to have)
Familiarity with HIPAA, SOC 2, or similar compliance frameworks (nice to have)
Experience evaluating or integrating AI tooling into a production codebase with data privacy and security in mind (nice to have)
Experience building tools for a small, specialized user group (nice to have)
Experience participating in technical recruiting or outreach (nice to have)

Benefits

Comp & perks

Direct impact on a problem that touches almost every working American
A team that takes ownership seriously and ships reliably and with urgency
Equal Employment Opportunity workplace