Lexington, MA

Engineer Jobs in Lexington, MA

5 jobs found

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Today

Software Engineer

MIT Lincoln Laboratory Lexington, MA

Lexington, MA

Today

$100k - $150k/yr Full time Python Data Analysis Data Analytics

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Job Description

Join the Bioanalytics Systems & Technologies Group as an onsite Software Engineer in Lexington, MA, supporting multiple projects that turn biological datasets into analytic and AI/ML solutions for national security needs.

Responsibilities

Develop user-interfaces to support bioanalytics workflows
Build harmonization software for medical and health data
Deliver web-based application capabilities
Support modeling and simulation efforts
Create and maintain data streaming applications

Requirements

Bachelor’s degree in computer science or a related discipline
Knowledge of the software design and development life-cycle
Experience working in an agile operating model
Strong proficiency in Python and related frameworks
Proficiency with relational databases such as PostgreSQL and MySQL, including SQL
Understanding of the software development lifecycle and agile methodologies
Strong problem-solving skills and attention to detail
Excellent written and verbal communication skills
Good interpersonal skills

Technologies

Python
PostgreSQL
MySQL
SQL
JavaScript
TypeScript
React

Desired Requirements

Front-end development experience using JavaScript or TypeScript and React
Proficiency with relational databases (PostgreSQL, MySQL) and SQL
Experience with AI/ML or data science (plus)
Experience working with biological and medical data (plus)

Compensation

USD 100,200 - 150,000 per year

Benefits

Comprehensive health, dental, and vision plans
MIT-funded pension
Matching 401K
Paid leave including vacation, sick, parental, military, and more
Tuition reimbursement and continuing education programs
Mentorship programs
A range of work-life balance options

Location: Lexington, MA (onsite)

Requisition ID: 43499

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18d ago

Junior AI Engineer

Nou Systems Inc Lexington, MA

Lexington, MA

18d ago

$70k - $125k/yr Full time Analytics Application Security Artificial Intelligence

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Job Description

Nou Systems Inc is looking for a Junior AI Engineer to join the Technical Solutions division in Lexington, MA. In this onsite role, you will help move machine learning solutions from the lab into practical field use, supporting projects that draw on supervised learning and reinforcement learning.

You will contribute to the full lifecycle, from designing training datasets and building models to developing MLOps pipelines, and you will communicate outcomes through written documentation and oral presentations while working alongside multiple teams.

What you’ll do

Help identify and design training data sets.
Develop, train, and analyze machine learning models for supervised learning and reinforcement learning.
Implement and customize ML models from open literature.
Develop MLOps pipelines to support model development and deployment workflows.
Visualize and communicate results in written documents and oral presentations.
Support multiple teams and collaborate effectively with other teammates.
Work across a mix of projects, including efforts with other data scientists and opportunities to educate non-data-science teams on the value and limitations of ML solutions.

What you bring

Bachelor’s degree in a STEM field.
Academic, internship, or professional experience with AI development (including RL, XAI, LLM).
1–3 years of hands-on experience with deep learning models (supervised, unsupervised, and reinforcement learning) using PyTorch, Tensorflow, or Jax.
Active Secret clearance or ability to obtain one.
Hands-on experience with deep learning models plus software development fundamentals in Python.
Strong written and verbal communication skills.
Team-oriented approach and willingness to work on a variety of ML projects as opportunities arise.

Technologies

Python
PyTorch
Tensorflow
Jax
Secret clearance
OpenAI Gymnasium
Ray RLlib
PyTorch Lightning
Optuna
MLflow
Git, Gitlab
CI/CD
Docker

Compensation and schedule

Location: Lexington, MA (onsite)
Salary: USD 70,000 - 125,000 per year
Minimum experience: 1 years

Benefits

Competitive Wages*
Medical, Rx, Dental & Vision Insurance
Medical plan with Health Savings Account eligibility
Company-funded Life, Short-Term & Long-Term Disability Insurance
Personal Time Off, Vacation, and Paid Holidays
401(k) Retirement Plan
Employee Stock Ownership Plan (ESOP)
Flexible Spending Accounts
Norton LifeLock
Tuition Reimbursement
Personal Development, Technical Learning Opportunities, & Lunch-n-Learns
Corporate Sponsored Events & Community Outreach

Preferred qualifications

Ability to write clean deep learning code in Python.
Ability and mindset to approach problems with statistical rigor.
Strong intellectual curiosity.
Comfort with self-direction and independent problem diagnosis.
Experience with time series data, satellite imagery, and graph neural networks.
Experience with RL development using OpenAI Gymnasium and Ray RLlib.
Experience with RL algorithms, including Q-Learning and Actor-Critic methods.
Experience with MLOps tools (PyTorch Lightning, Optuna, MLflow, etc.).
Experience with DevOps tools (Git, Gitlab, CI/CD, Remote Computing, Docker).

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18d ago

Mid-Level AI Engineer

Nou Systems Inc Lexington, MA

Lexington, MA

18d ago

$125k - $200k/yr Full time Ai Ml Artificial Intelligence Data Pipeline

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Job Description

Nou Systems Inc is seeking a mid-level AI Engineer in Lexington, MA to help develop, train, and analyze AI and ML systems for defense and related markets. This role focuses on building solutions that move from lab work into field-ready capabilities, spanning areas such as deep reinforcement learning, explainability, adversarial machine learning, and model interpretability.

The position will involve architecting AI solutions, building training and MLOps workflows, and communicating results to both technical and non-specialist audiences. You will also collaborate across multiple teams and contribute to proposal-driven work that supports the Technical Solutions division.

Key Responsibilities

Architect AI solutions and navigate complex tradeoffs.
Identify and design training data sets.
Implement and customize AI models using open literature.
Develop MLOps pipelines.
Visualize and communicate results through written documents and oral presentations.
Brief technical concepts and results to non-specialist audiences.
Contribute new work to the Technical Solutions division through proposals and conferences.
Help develop junior engineers and add value beyond individual technical contributions.
Support multiple teams and work effectively with other teammates.

Requirements

Master’s degree in computer science, math, physics, or a related field (or bachelor’s degree plus 2 additional years of experience).
Strong intellectual curiosity.
Ability to identify, understand, and apply relevant research literature.
Must possess or be able to obtain an active Secret clearance.

Technologies

Python
PyTorch
Tensorflow
Jax
PyTorch Lightning
Optuna
MLflow
Git
Gitlab
CI/CD
Remote Computing
Docker

Benefits

Competitive Wages*
Medical, Rx, Dental & Vision Insurance
Medical plan with Health Savings Account eligibility
Company-funded Life, Short-Term & Long-Term Disability Insurance
Personal Time Off, Vacation, and Paid Holidays
401(k) Retirement Plan
Employee Stock Ownership Plan (ESOP)
Flexible Spending Accounts
Norton LifeLock
Tuition Reimbursement
Personal Development, Technical Learning Opportunities, & Lunch-n-Learns
Corporate Sponsored Events & Community Outreach

Location: Lexington, MA (onsite)
Salary: USD 125,000 - 200,000 per year
Minimum Experience: 2 years

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1mo ago

Software Engineer

Aquila Technology Lexington, MA

Lexington, MA

1mo ago Closed

Full time Backend Developer Python APIs

This position is no longer accepting applications (closed Oct 22, 2026).

Job Description

Aquila Technology builds full-stack, data-intensive solutions that support advanced bioanalytics and AI-driven initiatives. In this onsite role in Lexington, MA, you will help develop and maintain scalable applications, including bioinformatics tools that work with complex biological datasets. You will also contribute to secure, reliable software and participate in technical decision-making that considers downstream impact.

What you’ll do

Develop and maintain full-stack applications supporting advanced bioanalytics and data-driven initiatives
Build scalable software, bioinformatics tools, and AI-driven solutions using complex biological datasets
Create secure, reliable applications
Identify strategic implications of technical decisions and advise the development team on potential downstream impacts

Required skills and experience

5+ years of full-stack software development experience
Master’s degree in Computer Science or related discipline (or bachelor’s degree with 5+ years of experience)
Excellent problem solving and strong team collaboration
Strong verbal and written communication
5 years of schema definitions and data modeling for SQL databases
5 years of AWS development experience: S3, IAM, RDS, EC2, Systems Manager, CloudWatch, CloudFormation, ECR, EKS
5 years of software documentation experience
5 years of JavaScript/React
5 years proficiency in modern Python (e.g., Flask, SQLAlchemy, boto3)
5 years designing and developing cloud-based distributed systems with microservices
5 years version control (Git/GitHub/GitLab)
Proven ability to identify strategic implications of technical decisions and proactively advise on downstream impacts
Demonstrated ability to work collaboratively in small to medium sized teams

Technologies you’ll work with

JavaScript, React, Python, Flask, SQLAlchemy, boto3
AWS S3, AWS IAM, AWS RDS, AWS EC2, AWS Systems Manager, AWS CloudWatch, AWS CloudFormation, AWS ECR, AWS EKS
SQL, Git, GitHub, GitLab
Microservices, ETL, ELT, Kubernetes, Kubeflow

Clearance

Interim clearance is sufficient to start with. An active clearance is highly preferred.

Onsite location and schedule

This position is 100% onsite due to the nature of the work. Candidates must live within 100 miles of Lexington, MA. Expect to be onsite at least 4 days a week for the first year. After that, a hybrid schedule may be discussed, with the final schedule determined by the hiring manager.

Interview process

1st round: Zoom
2nd round: onsite preferred if local; if not local, a Zoom interview

Nice to have

SQL database performance tuning and query optimization
Background in bioinformatics, genomics, or related life sciences data
Experience defining, debugging, and troubleshooting ETL/ELT pipelines and processes
Experience defining and managing workflows in k8s-based orchestration engines (i.e., Kubeflow)

Benefits

PTO: 15 days (vacation/sick)
Paid holidays: 10 paid holidays, including 6 standard (New Year’s, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas) plus 4 floating holidays prorated based on your day of hire
Volunteer time: 1.5 paid days (or 12 hours) for approved volunteer work
Parental leave: 1 week of paid maternity/paternity LOA after 1 year of full-time employment
Tuition & Training Reimbursement: $5,000 annually for pre-approved, eligible full-time team members after at least 6 months of employment (B or better required; reimbursement up to $5,000 per fiscal year for tuition expenses only)
401K with Fidelity: eligible after 90 days; company match on employee contribution: $1/$1 up to 3%, then $0.50 per $1 for 4th and 5th percent
Fully vested: vested from day one
Cell phone and internet reimbursement: up to $150 monthly (remote 2 days a week or more to qualify)
BYOD: reimbursement of up to $1,500 every three years for electronic equipment used to access corporate services (requires 6 months employment and a signed Device Minimum Configuration Form)

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1mo ago

Software Engineer

KBR Lexington, MA

Lexington, MA

1mo ago Closed

$156k - $180k/yr Full time Backend Developer Application Security C++ Language

This position is no longer accepting applications (closed Oct 21, 2026).

Job Description

Join KBR in supporting MIT Lincoln Laboratory’s Strategic and Long-Range Communications Group through the design and delivery of software for large-scale communications system demonstrations. This hybrid/remote-friendly role focuses on building production-ready system software and validating it through lab and field experiment cycles.

Based in Lexington, MA, you will work alongside system and software engineers to translate prototype simulations into real-time code, with opportunities to contribute to architecture, integration, testing, and technical documentation for internal and external audiences.

Key Responsibilities

Define software architecture for communications system demonstrations
Design and implement system software, primarily in C++, including protocol and state machine design in partnership with system designers to move from prototype simulation to real-time code
Collaborate with a multidisciplinary team to design and prototype communications-based software
Support integration and test design, including support for lab and field experiments
Contribute to technical documentation covering software architectures and code, including technical specifications, reports, and technical presentations for multiple internal and external audiences

Required Qualifications

Active DoD Secret clearance
M.S. in Software Engineering, Computer Science (or related field) with a strong background in real-time code development and code profiling; alternatively, a B. Sci with 6+ years of directly relevant experience is acceptable
At least 5 years of C++ / C++11 experience
At least 5 years of Java / Java Script experience
At least 5 years of source control experience (Git/SVN/Clearcase/etc.)
At least 5 years of object-oriented development
At least 5 years of software modeling and UML experience
At least 5 years of software deployment experience and knowledge of modern deployment techniques
At least 5 years of DevSecOps experience
At least 5 years of software algorithm development and performance improvements
At least 5 years of experience with design patterns and data structures
At least 5 years of experience with distributed systems and inter process communication (UDP/TCP/ActiveMQ/etc.)
At least 5 years of experience with the Linux development environment and/or commercial real-time operating systems
At least 5 years of experience with hardware abstraction layers
At least 5 years of experience with software lifecycle processes
Highly effective written and verbal communication skills, particularly for technical documentation
Demonstrated ability to work effectively in multi-disciplinary teams

Technologies

C++, C++11, Java, Java Script
Git, SVN, Clearcase
UML (Unified Modelling Language)
UDP, TCP, ActiveMQ
Linux, commercial real-time operating systems
DevSecOps, Python, MATLAB

Work Environment

Location: Lexington, MA (hybrid)
Travel Requirements: Willing and able to travel (up to 10%, typically CONUS)
Working Hours: Standard

Compensation

USD 156,400 - 180,000 per year

Basic Compensation: For MA only, the salary range is approximately $156,400 - $180,000 USD annually.

Desired Qualifications

Minimum of 2-3 years experience with digital signal processing and implementation of protocols and methods into software
Familiarity with software-defined radio protocols, design, and implementations
Familiarity with physical layer, MAC layer, and network layer communication protocols
Proficiency in Python
Demonstrate familiarity with MATLAB
Demonstrated ability to plan and manage tasks and projects (e.g., using Microsoft Project)

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Engineer Jobs in Lexington, MA

Software Engineer

Junior AI Engineer

Mid-Level AI Engineer

Software Engineer

Software Engineer

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