Senior AI Developer

Stellix; Foxvale (MA); On-site; USD 135,000 - 160,000; Full time

Benefits offered by this job

Medical, Dental, Vision Insurance

HSA/FSA

Unlimited Vacation

12 paid holidays

Birthing parent leave: 12 weeks

401(k) + ESOP

Job summary

Stellix is hiring a Senior AI Developer to design, build, deploy, and support AI-enabled solutions across business and engineering use cases. You will prototype emerging AI tech, integrate AI into enterprise apps, and drive reusable components and APIs.

Expect collaboration across teams, focus on security, reliability, and maintainability. The role is on-site in the United States with a strong on-site requirement: 5 days/week initially, then 4 days/week on-site after 4–6 months.

Qualifications

• BS or MS in CS/DS/AI or related field.
• Strong Python development skills.
• Experience with AI/ML libraries.
• Knowledge of AI agents, embeddings, and semantic search.
• API/backend/database/data pipelines integration experience.
• SQL knowledge and relational DBs.
• Git and version control practices.
• Experience with C#/.NET is a plus.
• Familiarity with Docker and deployment practices.
• Understanding cloud/hybrid environments and production AI concerns.

Responsibilities

• Design, develop, test, deploy, and support AI-enabled apps and services.
• Translate business needs into scalable AI solutions.
• Integrate AI capabilities with enterprise apps, data, services, and workflows.
• Prototype and evaluate emerging AI technologies for production use.
• Develop reusable AI components, APIs, and patterns.
• Improve AI solution quality, performance, reliability, and scalability.
• Contribute to AI architecture, documentation, and best practices.

Skills

Python

AI/ML concepts

ML libraries

AI agents

Intelligent automation

Info retrieval

Embeddings

Semantic search

Vector data

APIs

Backend services

Databases

Data pipelines

AI/ML integration

SQL

Relational DBs

Git

C#/.NET

Docker

Cloud/On-prem/Hybrid

Production concerns

Education

Bachelor's or Master's in CS/DS/AI/related field

Tools

Git

Docker

SQL Server/PostgreSQL

C#/.NET

Job description

Role Summary

The Senior AI Developer is responsible for designing, developing, integrating, deploying, and supporting artificial intelligence solutions across a broad range of business, engineering, and customer use cases.

The role supports the full AI solution lifecycle, from research and prototyping through production deployment, optimization, and scale. The individual will work with machine learning, generative AI, intelligent automation, agentic AI, and emerging technologies to deliver secure, reliable, maintainable, and reusable enterprise AI solutions.

This role is not limited to a specific technology, platform, or use case and requires the ability to adapt as AI technologies, customer needs, and business requirements evolve.

Qualifications & Technical Skills

• Bachelor's or Master's degree in Computer Science, Data Science, Artificial Intelligence, Machine Learning, Computer Engineering, Software Engineering, or a related technical field.
• Strong proficiency in Python with a solid foundation in software engineering and application development.
• Strong understanding of artificial intelligence and machine learning, including generative AI and emerging AI technologies.
• Experience with or knowledge of commonly used AI/ML libraries and frameworks.
• Understanding of AI agents, intelligent automation, information retrieval, embeddings, semantic search, and vector-based data retrieval.
• Experience developing and integrating APIs, backend services, databases, data pipelines, and AI/ML capabilities into applications.
• Working knowledge of SQL and relational databases, such as SQL Server, PostgreSQL, or equivalent technologies.
• Proficiency with Git and source control practices in a collaborative software development environment.
• Experience with or exposure to additional enterprise development technologies such as C#/.NET.
• Familiarity with containerization technologies such as Docker, application deployment, and environment configuration and troubleshooting.
• Understanding of cloud, on-premises, and hybrid environments and considerations for deploying and operating AI solutions.
• Understanding of production software and AI considerations, including performance, scalability, reliability, monitoring, security, testing, and maintainability.

Key Responsibilities

• Design, develop, test, deploy, and support AI-enabled applications and services.
• Translate business and customer needs into practical and scalable AI solutions.
• Integrate AI capabilities with enterprise applications, data, services, and business workflows.
• Prototype and evaluate emerging AI technologies and transition successful concepts into production solutions.
• Develop reusable AI capabilities, components, and technical patterns that can support multiple applications, business functions, and customer use cases.
• Evaluate and continuously improve AI solution quality, performance, reliability, and scalability.
• Contribute to AI architecture, technical documentation, development standards, and engineering best practices.

Core Competencies

• Strong analytical thinking, problem-solving, and problem-decomposition skills.
• Ability to independently research and work through unfamiliar technical challenges.
• Curiosity and willingness to continuously learn and adapt as AI technologies evolve.
• Ability to balance experimentation and innovation with established project objectives, priorities, scope, and timelines.
• Sound judgment when evaluating new technologies and alternative approaches without unnecessarily changing project direction.
• Strong attention to quality, reliability, maintainability, security, and technical detail.
• Effective communication and collaboration with technical teams, subject matter experts, business stakeholders, and customers.
• Demonstrates ownership, accountability, effective time management, and prioritization.
• Ability to adapt to different business domains, customer requirements, and technical environments.

Measures of Success

• Delivers AI-enabled applications and services on time, within scope, and aligned with business and customer requirements.
• Transitions successful AI prototypes and emerging technology evaluations into secure, maintainable, production-ready solutions.
• Produces measurable business value through productivity improvements, cost reduction, cycle-time reduction, revenue contribution, or enhanced customer outcomes.
• Maintains high solution quality, including model accuracy, retrieval relevance, agent task‑completion rates, response quality, and minimized hallucinations.
• Ensures reliable and scalable production performance through strong availability, latency, throughput, monitoring, incident response, and recovery practices.
• Drives adoption of AI solutions by achieving sustained user engagement, workflow integration, stakeholder satisfaction, and customer acceptance.
• Develops reusable AI components, technical patterns, APIs, and documentation that accelerate delivery across multiple applications and business functions.
• Maintains strong engineering practices, including appropriate testing, code quality, source control, deployment discipline, defect reduction, and technical maintainability.
• Protects company, customer, and employee data by meeting security, privacy, compliance, and responsible AI standards.
• Continuously improves AI solutions based on performance data, user feedback, changing business needs, and advances in AI technology.
• Builds effective partnerships with technical teams, subject matter experts, business stakeholders, and customers to ensure successful solution outcomes.

Here’s What You’ll Get

• Highly competitive Medical, Dental, and Vision Insurance
• Flexible Spending or Health Savings Accounts
• Unlimited Vacation Time
• 10 Paid Holidays
• 12 Paid Weeks Birthing Parent Leave
• Pet Insurance
• Retirement Savings: 401(k) and Employee Stock Ownership Plan
• Employee Referral Bonus
• Professional Development Reimbursement
• Company Paid STD, LTD, and Life Insurance

Compensation:

This position offers a base salary range of $135,000 to $160,000, based on experience and qualifications. The role is also eligible for a variable compensation plan.

The posted salary range represents a good faith estimate of the expected compensation for this role at the time of posting. Final compensation will be determined based on factors such as relevant experience, skills, qualifications, internal equity, and business needs.

On-Site Requirements

This position requires a full on-site presence 5 days per week during the first 4–6 months. Following that period, the role will be on-site four days per week, including Monday, Wednesday, and Thursday, with the fourth on-site day alternating between Tuesday or Friday depending on business needs.

Must be currently authorized to work in the United States.

Policy on Third-Party Unsolicited Resume Submissions: Please note that any third-party unsolicited resume submissions will immediately become the property of Stellix. Stellix will not pay any fee to a submitting employment agency, person, or entity unless a signed agreement is established.

Please Note: Stellix is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, protected veteran status or any other characteristic protected by law.