Software Engineer, React Focus

Location: Nashua, New Hampshire, United States

Category: Engineering & Technology

Employment Type: Full-Time

Job Description
You'll set technical direction for a TypeScript frontend platform serving a large data-intensive engineering program. This is a hands-on role: you'll write code, own architecture, and raise the ceiling for a team of ~6 engineers. Expect to work directly with backend, product, and end users.

What you'll do

• Co-own architecture for a React/TypeScript/Next.js application backed by gRPC/protobuf services
• Drive design of data-access layers (BFF/API boundaries, caching, pagination, streaming) where payload size and memory pressure are real constraints
• Set and enforce standards across a Turborepo monorepo: shared packages, versioning, build/CI performance, dependency hygiene
• Lead technical design reviews; write the design docs and white papers that anchor them
• Diagnose hard problems: memory exhaustion, render performance, pipeline issues
• Mentor engineers across levels and enable the team to work faster
• Work directly with customers and stakeholders to shape requirements, then decompose them into scoped, estimable work

Required Education, Experience, & Skills

• 6+ years building production software; 4+ in TypeScript/JavaScript and Node
• Deep React experience, including performance profiling and state/data-fetching architecture at scale
• Demonstrated ownership of system-level design decisions and their consequences
• Strong written communication: design docs, technical proposals
• Track record of mentoring and elevating other engineers
• Comfort operating with ambiguity and defining the problem
• Ability to obtain and maintain a DoD Secret clearance (U.S. citizen)

Preferred Education, Experience, & Skills

• gRPC / protobuf, especially large-payload or streaming scenarios
• Turborepo, Nx, or comparable monorepo tooling
• API design (REST, gRPC, BFF patterns) and versioning strategy
• Agentic / LLM-assisted development workflows and tooling
• Playwright or comparable E2E frameworks; test strategy across the pyramid
• CI/CD pipeline design and build optimization
• Data visualization at scale (AG Charts, D3, or similar)
• Storybook and component library ownership
• Wireframing and UX collaboration; comfort sketching a flow before building it
• Defense, aerospace, or other regulated-environment experience

#ECSSE

Pay Information
Full-Time Salary Range: $118095 - $200762

Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.

Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.


About BAE Systems Electronic Systems
BAE Systems, Inc. is a defense, aerospace, and security company headquartered in Falls Church, Virginia, with more than 40,000 employees worldwide. We serve, supply, and protect those who protect us. As one of the most geographically diverse international defense companies, we deliver a full range of products and services spanning air, land, maritime, space, and cyber, including advanced electronics, intelligence solutions, and dedicated customer support.

Our culture is performance-driven and values-led, built on curiosity, creativity, and collaboration. Purpose isn't a tagline here. It's what drives us. We're developing breakthrough technologies that defend national security and make a lasting impact on our communities and our planet. When you join BAE Systems, you're not just building a career. You're contributing to a mission that truly matters.

This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.