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Codex Jobs in Boston, MA (NOW HIRING)

InvoiceCloud

Senior Software Engineer

Boston, MA · On-site

$133K - $175K/yr

Demonstrated hands-on experience using AI-powered code assistance tools (e.g., Claude, Codex, or similar) in daily development workflows, including prompt engineering and validation of generated code ...

RA Capital Management, LLC

AI Engineer

Boston, MA · Hybrid

Strong proficiency with the latest agentic coding techniques using tools like Claude Code or Codex. * Professional experience with building advanced AI workflows, MCPs, agent swarms etc... Additional ...

SevenAI

Principal Software Engineer (Cloud)

Boston, MA · On-site

$146K - $196K/yr

Comfortable and curious working with AI-assisted development tools such as Claude Code, Codex or Cursor. Preferred Qualifications: * Experience building AI-native products or integrating LLM/agent ...

Addison Group

AI Curation Operator

Boston, MA · On-site

$35/hr

Claude Code, Codex, Copilot, or similar) and a track record of using them for non-trivial work - prompts, skills, or projects you have shipped with AI assistance. · Foundations in prompt engineering ...

Black Kite

AI Automation Specialist

Boston, MA · On-site

... Codex, no-code/low-code platforms (n8n, Make, Zapier), and LLM APIs. Manage work in GitHub; deliver to production, not handoffs. • Connect AI capabilities to our existing stack, including Slack ...

Black Kite

AI Automation Specialist

Boston, MA · On-site

... Codex, no-code/low-code platforms (n8n, Make, Zapier), and LLM APIs. Manage work in GitHub; deliver to production, not handoffs. • Connect AI capabilities to our existing stack, including Slack ...

Lorvenk Technologies LLC

AI Engineer

Boston, MA · On-site

Experience with Claude Code, Codex, Cursor, GitHub Copilot, or similar. * Ability to collaborate with cross-functional teams. * Passion for technology and AI. Preferred Qualifications: * Experience ...

L3HHCM20

Artificial Intelligence Specialist

Wilmington, MA · On-site +1

$109K - $203K/yr

... Codex) including measuring productivity outcomes Background in defense, aerospace, or adjacent mission-critical industries, with experience navigating the unique constraints of delivering AI in ...

Kong

Staff Solutions Engineer - Northeast

Boston, MA · On-site

$220K - $260K/yr

Hands-on experience with AI-assisted development tooling -- Claude Code, GitHub Copilot, OpenAI Codex, or equivalent is required. * Working knowledge of AI/LLM architectures, including model routing ...

RA Capital Management, LLC

Data Solution Engineer

Boston, MA · On-site

$124K - $149K/yr

Exposure to AI-assisted development tools and agentic workflows (e.g., Claude Code, Codex, MCPs, automation agents) strongly preferred Additional Requirements * Excellent English communication skills ...

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Codex jobs near you
Infographic showing various Codex job openings in Boston, MA as of June 2026, with employment types broken down into 87% Full Time, 6% Part Time, and 7% Contract. Highlights an 78% Physical, 4% Hybrid, and 18% Remote job distribution.
Senior Software Engineer

Senior Software Engineer

InvoiceCloud

Boston, MA • On-site

$133K - $175K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 21 days ago

Job description

About InvoiceCloud:
InvoiceCloud is a fast-growing fintech leader recognized with 20 major awards in 2025, including USA TODAY and Boston Globe Top Workplaces, multiple SaaS Awards wins for Best Solution for Finance and FinTech, and national customer service honors from Stevie and the Business Intelligence Group. Judges also highlighted our mission to reduce digital exclusion and restore simplicity and dignity to how people pay for essential services, as well as our leadership in AI maturity and responsible innovation. It's an award-winning, purpose-driven environment where top talent thrives. To learn more, visit InvoiceCloud.com.
Job Details:
We are seeking a highly skilled and results-oriented Senior Software Engineer to support the Software Engineering team. This role will play a key part in advancing InvoiceCloud's mission to drive digital transformation for clients and enhance customer engagement.
The ideal candidate operates as a proactive, trusted partner-capable of managing complex responsibilities, collaborating across teams, and maintaining the high standards of professionalism and innovation that define InvoiceCloud's culture.
Success Profile:
This role is anchored in our company's core competencies. These competencies reflect the mindsets and behaviors that define success in this role. Below is how each competency translates into meaningful impact and outcomes for this position.
Takes Ownership
  • Play a critical role in the architecture, design, development, and technical decision making of applications in scope
    • Help lead large projects from idea to execution, ensuring scalable, secure, and high-quality outcomes
    • Write well-designed, well-tested, readable, and maintainable code
    • Participate in code reviews to maintain code quality and distribute knowledge across the team
    • Build trusting relationships and collaborate within and across all internal teams
    • Encourage a highly communicative culture that ensures open, transparent, and consistent exchange with key stakeholders• Coach, mentor, and support peers in their development
    • Report progress on work items as it happens via work item notes and as requested

Drives Efficiency
  • Ensure application releases occur regularly, timely, and with high quality
    • Champion agile best practices including continuous integration, test-driven development, and continuous deployment
    • Play an active role in continuous improvement of lean product development and delivery processes
    • Partner with designers and product managers to scope, design, define, measure, and iteratively deliver solutions
    • Perform periodic on-call support for after-hours deployment and maintenance windows

Innovative
  • Design and build complex, responsive, modern, and consistent web applications
    • Contribute to the design and implementation of the design system
    • Implement and promote best front-end practices across the team
    • Build scalable, distributed systems using microservices and event-driven architecture
    • Leverage AI-powered code assistance tools (e.g., Claude, Codex, or similar) to accelerate development, improve code quality, and optimize testing and debugging workflows, while rigorously validating outputs for accuracy, security, and maintainability

Requirements
  • 5+ years of experience in enterprise software development, preferably within financial services or FinTech (banking, lending, payments)
  • Strong experience building component-based, responsive web applications using modern JavaScript frameworks (Angular, React), HTML, CSS, and JQuery, with an understanding of design system implementations
  • Demonstrated hands-on experience using AI-powered code assistance tools (e.g., Claude, Codex, or similar) in daily development workflows, including prompt engineering and validation of generated code for quality, security, and reliability
  • Proficiency in .NET technologies including VB.NET, C#, ASP.NET (WebForms, MVC, WebAPI), and Visual Studio
  • Strong database expertise including T-SQL, ADO.NET, SQL Server, and experience with transactional databases, caching systems, and performance tuning of production systems
  • Experience with Azure DevOps, Team Foundation Server (TFS/VSTS), and cloud platforms such as Microsoft Azure or similar providers
  • Experience developing public and internal APIs, integration frameworks, and scalable distributed systems using microservices and event-driven architecture
  • Experience with agile methodologies (Scrum, Kanban), test-driven development (unit and integration testing), and continuous integration practices
  • Strong understanding of software security best practices
  • Ability to collaborate effectively with both technical and non-technical stakeholders, with strong communication skills and a collaborative mindset
  • Self-led, capable of working independently with minimal direction

Benefits:
  • Medical, dental, vision, life & disability insurance
  • 401(k) plan with company match
  • Flexible Time Off (FTO), wellbeing days, paid holidays, and summer Fridays
  • Mental health resources
  • Paid parental leave & backup care
  • Tuition reimbursement
  • Employee Resource Groups (ERGs)

Base salary is one component of total compensation. Employees may also be eligible for an annual bonus or commission. Some roles may also be eligible for overtime pay. The above represents the expected base compensation range for this job requisition. Ultimately, in determining your pay, we'll consider many factors including, but not limited to, skills, experience, qualifications, geographic location, and other job-related factors.
Base Compensation Range
$125,000-$150,000 USD
InvoiceCloud is committed to providing equal employment opportunities to all employees and applicants. We do not tolerate discrimination or harassment of any kind based on race, color, religion, age, sex, nationality, disability, genetic information, veteran or military status, sexual orientation, gender identity or expression, or any other characteristic protected under applicable laws.
This commitment applies to all aspects of employment, including recruitment, hiring, placement, promotion, termination, layoff, recall, transfer, leave, compensation, and training.
If you require a disability-related or religious accommodation during the application or recruitment process, and wish to discuss possible adjustments, please contact jobs@invoicecloud.com.
Click here to review InvoiceCloud's Job Applicant Privacy Policy.
For recruitment agencies: InvoiceCloud does not accept unsolicited resumes from agencies. Please do not forward resumes to our job aliases, employees, or any other company location. InvoiceCloud is not responsible for any fees associated with unsolicited submissions.

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