CrawlJobs Logo
S
Synquery · IT - Software Development

Staff Engineer – Full Stack

United States, Boston · Job Posted February 18, 2026
Apply Position
Job Link Share

Job Description

Synquery is redefining how expert insights are accessed and applied. We’re building an AI-native expert network that connects clients to expertise with unmatched speed, precision, and efficiency. We’ve designed our platform from the ground up for the age of AI—powering features like AI-driven interviewing agents and AI based expert sourcing/search. With a proven MVP and growing traction, we’re expanding our team to scale the platform and build the future of expert insight.

Job Responsibility

  • Build Core Systems: Design, implement, and maintain robust, scalable, and secure software solutions
  • Contribute to the Architecture: Contribute to the technical architecture decisions to ensure scalability, maintainability, and performance of our systems
  • Collaborate Cross-Functionally: Partner with product, design, and ML teams to translate business goals into robust features
  • Advise and Guide: Provide technical guidance when needed to less experienced engineers and help shape a high-performance, collaborative culture
  • Innovate: Leverage emerging technologies in AI/ML, generative AI, and hybrid search to enhance product capabilities
  • Shape Engineering Culture: As a founding team member, influence team practices, tooling, and values from the ground up

Requirements

  • 7+ years in full-stack software development, ideally with experience in early-stage or high-growth startups
  • Proficiency in Python (FastAPI), TypeScript (Next.js), PostgreSQL, AWS, Docker
  • Experience with LLM APIs (GPT, Claude, etc.) and/or vector DBs (e.g., Pinecone) is a big plus
  • Strong collaboration with product teams, with an ability to balance speed, quality, and user impact
  • A dynamic, entrepreneurial approach to problem-solving
  • Thrives in fast-paced, ambiguous environments with a “get-it-done” attitude
  • Skilled at designing resilient systems and debugging complex issues in live environments
  • Solid interpersonal skills with the ability to work well with team members from varied cultural backgrounds
  • Strong ability to clearly communicate to both technical and to a lesser extent business audiences

Nice to have

Experience with LLM APIs (GPT, Claude, etc.) and/or vector DBs (e.g., Pinecone)

What we offer

  • High Impact Role: Be a pivotal contributor to Synquery’s growth and success
  • Career Growth: Opportunities for rapid advancement as the company scales
  • Equity Ownership: Meaningful equity options
  • Competitive Compensation: Competitive salary with flexible work arrangements
  • Supportive Culture: A collaborative team that values diversity, innovation, and mutual respect
  • Continuous Learning: Opportunities for professional development and working on cutting-edge technologies
Synquery - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Staff Engineer – Full Stack

8 matching positions

Senior Staff Full Stack Engineer– AI Platform

We are looking for senior software engineers who will have front end responsibil...
Location
Location
India , Karnataka
Salary
Salary:
Not provided
teradata.com Logo
Teradata
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 12+ years of software engineering experience building large-scale applications
  • Strong expertise in modern frontend development with React and JavaScript/TypeScript
  • Experience building full-stack applications with scalable backend services
  • Backend experience with Node.js, Java, or Python
  • Demonstrated experience designing distributed systems and APIs
  • Experience working in fast-paced product development environments
  • Strong ability to lead technical initiatives across multiple teams
  • Strong knowledge in writing Automated Test Suites using frameworks like Jasmine, Protractor, Mocha, Cypress, Jest, or Selenium
  • Good working knowledge on Java/Python and experience with development
  • Familiarity with TDD and concepts like mocking and stubbing for unit / integration tests
Job Responsibility
Job Responsibility
  • Lead architecture and development of scalable full-stack systems, delivering high-quality customer-facing applications using React and modern JavaScript/TypeScript frameworks
  • Design and build distributed backend services and APIs using Node.js, Java, or Python to support frontend applications and AI-powered capabilities
  • Drive adoption of AI-assisted development workflows, including translating AI-generated prototypes into production-grade software and improving developer productivity through modern tooling
  • Design and implement AI-powered features and agent-based systems, integrating LLM-driven capabilities into product experiences
  • Lead system design for large-scale applications, ensuring performance, reliability, and maintainability across services and platforms
  • Provide technical leadership across teams, mentoring engineers, guiding architectural decisions, and establishing best practices
  • Partner with product, design, and cross-functional teams to rapidly prototype, iterate, and ship impactful features in a fast-paced environment
  • Evaluate and integrate emerging technologies, particularly in AI, developer tooling, and platform capabilities
What we offer
What we offer
  • people-first culture
  • flexible work model
  • focus on well-being
  • inclusive environment
  • Fulltime
Read More
Arrow Right

Staff Engineer (Full Stack)

We’ve partnered with a fast-growing healthtech startup building AI-powered tools...
Location
Location
United States
Salary
Salary:
180000.00 - 240000.00 USD / Year
signifytechnology.com Logo
Signify Technology
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of experience building production web applications
  • Strong full-stack experience with Rails and Hotwire
  • Comfortable owning projects end-to-end from architecture through UI implementation
  • Ability to bridge backend engineering, frontend development, and product design
  • Experience working in autonomous, senior engineering teams
Job Responsibility
Job Responsibility
  • Lead development of two new Rails 8 + Hotwire applications from the ground up
  • Build full-stack features spanning backend systems, frontend interfaces, and UX details
  • Develop AI-powered chat and workflow automation tools for healthcare operations
  • Own key technical decisions and contribute to product architecture
  • Collaborate with a senior engineering team to ship polished, production-ready features
  • Work autonomously in a fully remote, product-driven environment
What we offer
What we offer
  • Base salary up to $240,000
  • 100% remote within the US
  • Comprehensive benefits package
  • Opportunity to work on AI-powered healthcare products with real-world impact
  • Collaborative environment with a highly experienced engineering team
  • Fulltime
Read More
Arrow Right

Staff Engineer – Full Stack Applications

GEICO is seeking an experienced Engineer with a passion for building high-perfor...
Location
Location
United States , Chevy Chase
Salary
Salary:
110000.00 - 230000.00 USD / Year
geico.com Logo
Geico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Extensive experience in leading and building full-stack web applications, with a strong focus on front-end technologies like React, Typescript, Bootstrap and Django-based backends
  • Proven expertise in designing and developing microservices using Golang, Java, Python, Django, gRPC with protocol buffers, Kafka and Apache Spark with a deep understanding of both API and event-driven architectures
  • Strong background in leading UI development efforts, particularly with JavaScript based frameworks ensuring a seamless user experience
  • Experience leading web application development using micro-frontend architecture with client-side composition methods
  • Experience leading the integration of micro-frontend applications with a large single page application
  • Experience building architecture, design patterns, reliability, security and scaling of new and existing web applications
  • Expertise leading and contributing to event driven microservices using Kafka and Apache spark
  • Expertise in data model design on relational databases like PostgreSQL and No-SQL databases like Cassandra, MongoDB
  • Understanding of existing monitoring concepts and tooling
  • Understanding of DevOps Concepts and Cloud Architecture
Job Responsibility
Job Responsibility
  • Provide technical and thought leadership across multiple layers of the stack, focusing on fullstack web application development and ensuring the integration of UI, microservices and backend systems
  • Work closely with product leaders, other engineers and partner teams to understand product requirements, build a technical backlog, and develop solutions that align with product vision
  • Lead the development of UI using React, Typescript and Bootstrap on a Django framework while also contributing to the Architecture and development of microservices using Golang, Python, Django and Kafka
  • Design and implement loosely coupled, scalable microservices
  • Own and drive one to two service areas, being accountable for their successful delivery, from requirement analysus, design through to production, and ensuring they meet performance, scalability and reliability standards
  • Act as a role model and mentor to senior and junior engineers, guiding them in understanding the architecture, design and implementation of systems
  • Maintain excellent communication with Parter teams and leads, articulating technical implementations for various stakeholders, ensuring alignment across teams
  • Proactively explore unknown product requirements and design solutions that meet evolving needs, contributing to the continuous improvement of our platform
  • Leverage your experience in deploying wen applications in Kubernetes (k8s) environments, ensuring reliable interaction with backend services and seamless integration with cloud and on-premises systems
What we offer
What we offer
  • Comprehensive Total Rewards program that offers personalized coverage tailor-made for you and your family’s overall well-being
  • Financial benefits including market-competitive compensation
  • a 401K savings plan vested from day one that offers a 6% match
  • performance and recognition-based incentives
  • and tuition assistance
  • Access to additional benefits like mental healthcare as well as fertility and adoption assistance
  • Supports flexibility- We provide workplace flexibility as well as our GEICO Flex program, which offers the ability to work from anywhere in the US for up to four weeks per year
  • Fulltime
Read More
Arrow Right

Staff Engineer – Full Stack Applications FinOps

GEICO is seeking an experienced Engineer with a passion for building high-perfor...
Location
Location
United States , Chevy Chase, MD; Palo Alto, CA; Dallas, TX; Seattle, WA
Salary
Salary:
110000.00 - 230000.00 USD / Year
geico.com Logo
Geico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Extensive experience in leading and building full-stack web applications, with a strong focus on front-end technologies like React, Typescript, Bootstrap) and Django-based backends
  • Proven expertise in designing and developing micro-services using Golang,Java,Python,Django,gRPC with protocol buffers, Kafka and Apache Spark with a deep understanding of both API and event-driven architectures
  • Strong background in leading UI development efforts, particularly with JavaScript based frameworks ensuring a seamless user experience
  • Experience leading web application development using micro-frontend architecture with client-side composition methods
  • Experience leading the integration of micro-frontend applications with a large single page application
  • Experience building architecture, design patterns, reliability, security and scaling of new and existing web applications
  • Expertise leading and contributing to event driven microservices using Kafka and Apache spark
  • Expertise in data model design on relational databases like PostgreSQL and No-SQL databases like Cassandra, MongoDB
  • Understanding of existing monitoring concepts and tooling
  • Understanding of DevOps Concepts and Cloud Architecture
Job Responsibility
Job Responsibility
  • Provide technical and thought leadership across multiple layers of the stack, focusing on full-stack web application development and ensuring the integration of UI, micro-services, and backend systems
  • Work closely with product leaders, other engineers and partner teams to understand product requirements, build a technical backlog, and develop solutions that align with product vision
  • Lead the development of UI using React, Typescript and Bootstrap on a Django framework while also contributing to the Architecture and development of microservices using Golang, Python, Django and Kafka
  • Design and implement loosely coupled, scalable micro-services
  • Own and drive one to two service areas, being accountable for their successful delivery, from requirement analysis, design through to production, and ensuring they meet performance, scalability and reliability standards
  • Act as a role model and mentor to senior and junior engineers, guiding them in understanding the architecture, design and implementation of systems
  • Maintain excellent communication with Parter teams and leads, articulating technical implementations for various stakeholders, ensuring alignment across teams
  • Proactively explore unknown product requirements and design solutions that meet evolving needs, contributing to the continuous improvement of our platform
  • Leverage your experience in deploying wen applications in Kubernetes (k8s) environments, ensuring reliable interaction with backend services and seamless integration with cloud and on-premises systems
What we offer
What we offer
  • Comprehensive Total Rewards program that offers personalized coverage tailor-made for you and your family’s overall well-being
  • Financial benefits including market-competitive compensation
  • a 401K savings plan vested from day one that offers a 6% match
  • performance and recognition-based incentives
  • and tuition assistance
  • Access to additional benefits like mental healthcare as well as fertility and adoption assistance
  • Supports flexibility- We provide workplace flexibility as well as our GEICO Flex program, which offers the ability to work from anywhere in the US for up to four weeks per year
  • Fulltime
Read More
Arrow Right

Staff Engineer, Full Stack (Wallet Platform)

Phantom is the modern money app used by tens of millions around the world. Our p...
Location
Location
Salary
Salary:
200000.00 - 250000.00 USD / Year
phantom.app Logo
Phantom
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelors degree in Computer Science or related technical field or equivalent practical experience
  • 8+ years full-time software engineering experience
  • Demonstrated interest in open and community-driven platforms
  • English language proficiency
Job Responsibility
Job Responsibility
  • Feature development: owning features on our web platforms – currently the Phantom Extension and our website
  • New initiatives and products: leading initiatives to add support for other blockchains to Phantom, and to launch new complementary products or infrastructure
  • Interfacing with users: interfacing directly with end-users and developers building on Phantom – supporting them and collecting feedback to inform the direction of the product
  • Team building: working with the team to create and foster a culture of raising the bar with each new hire
What we offer
What we offer
  • Competitive salary and equity
  • Comprehensive insurance (medical/dental/vision) — 100% covered
  • Stipend for your ideal remote set-up
  • Flexible hours and a supportive remote environment
  • Unlimited vacation: Take time when you need it (and we really mean it!)
  • 401(k) retirement plan
  • Monthly wellness benefit
  • Weekly meal benefit
  • Global off-sites
  • Fulltime
Read More
Arrow Right

Full-Stack Staff Engineer

Synopsys software engineers are key enablers in the world of Electronic Design A...
Location
Location
Armenia , Yerevan
Salary
Salary:
Not provided
synopsys.com Logo
Synopsis Engineering
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s or Master’s degree in Computer Science
  • 5+ years of experience in full-stack software development
  • Proficiency in HTML, CSS, JavaScript, and frameworks such as React and Angular
  • Strong knowledge of server-side languages such as Node.js, Python, and Golang, and experience with frameworks like Express, FastAPI/Django
  • Proficiency in SQL and NoSQL databases such as PostgreSQL, MongoDB, and Elasticsearch
  • Experience with containerization tools like Docker/Podman, and familiar with Gitlab, Jenkins for CI/CD
  • Proficiency in Git and collaborative development workflows
  • Familiar with AI models and AI agent frameworks
  • Experience with agile development methodologies, i.e., Scrum, Kanban
  • Strong problem-solving skills, excellent communication abilities, and a collaborative mindset
Job Responsibility
Job Responsibility
  • Design, develop, and maintain scalable web applications using modern front-end and back-end technologies
  • Implement AI agents and algorithms into web applications to enhance functionality and user experience
  • Collaborate with Agile teams and business users to deliver high-quality solutions
  • Write clean, maintainable, and efficient code, following best practices and coding standards
  • Develop and execute unit tests, integration tests, and end-to-end tests to ensure the reliability and performance of applications
  • Manage the deployment of applications to production environments, ensuring scalability and security
  • Create and maintain technical documentation for code, APIs, and system architecture
What we offer
What we offer
  • Comprehensive medical and healthcare plans that work for you and your family
  • In addition to company holidays, we have ETO and FTO Programs
  • Maternity and paternity leave, parenting resources, adoption and surrogacy assistance, and more
  • Purchase Synopsys common stock at a 15% discount, with a 24 month look-back
  • Save for your future with our retirement plans that vary by region and country
  • Competitive salaries
  • Fulltime
Read More
Arrow Right

Member of Technical Staff - Full Stack Software Engineer

Microsoft AI is looking for a Member of Technical Staff – Full Stack Software En...
Location
Location
United States , Mountain View
Salary
Salary:
100600.00 - 199000.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to C#, Java, or Python OR equivalent experience.
  • 2+ years’ experience with SQL, PostgreSQL or MySQL
  • 2+ years' experience building scalable services on top of public cloud infrastructure like Azure, AWS, or GCP. Extensive use datastores like RDBMS, key-value stores, etc.
  • Experience with Development & Debugging with dev environments like Visual Studio or Visual Studio Code
  • HTML, CSS, JavaScript, ASP.NET, REST, jQuery
  • Familiarity with browser automation tools like Selenium, Puppeteer or Playwright
  • Familiarity with mobile automation tools like Appium
  • Familiarity with LLMs and AI ChatBots
  • Prompt EngineeringAzure DevOps, GIT
  • Azure Open AI, Azure Foundry
Job Responsibility
Job Responsibility
  • Expertise in experimentation methodologies, including A/B evaluation, data sampling, measurement techniques, evaluation design, and data analysis.
  • Demonstrating strategic vision by understanding organizational goals, translating metrics into actionable insights, and enhancing product quality.
  • Designing pipeline architecture to ensure rapid iteration and scalability.
  • Conducting post-analysis of labeled data and developing dashboards to visualize insights.
  • Collaborating closely with the product team to enhance quality and address gaps.
  • Embody our Culture and Values.
  • Fulltime
Read More
Arrow Right

Member of Technical Staff - Full Stack Software Engineer

Microsoft AI is looking for a Member of Technical Staff – Full Stack Software En...
Location
Location
United States , Redmond; Mountain View
Salary
Salary:
119800.00 - 234700.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to C#, Java, or Python
  • OR equivalent experience
  • 2+ years’ experience with SQL, PostgreSQL or MySQL
  • 2+ years' experience building scalable services on top of public cloud infrastructure like Azure, AWS, or GCP
  • Extensive use datastores like RDBMS, key-value stores, etc.
  • Experience with Development & Debugging with dev environments like Visual Studio or Visual Studio Code
  • HTML, CSS, JavaScript, ASP.NET, REST, jQuery
  • Familiarity with browser automation tools like Selenium, Puppeteer or Playwright
  • Familiarity with mobile automation tools like Appium
  • Familiarity with LLMs and AI ChatBots
Job Responsibility
Job Responsibility
  • Expertise in experimentation methodologies, including A/B evaluation, data sampling, measurement techniques, evaluation design, and data analysis
  • Demonstrating strategic vision by understanding organizational goals, translating metrics into actionable insights, and enhancing product quality
  • Designing pipeline architecture to ensure rapid iteration and scalability
  • Conducting post-analysis of labeled data and developing dashboards to visualize insights
  • Collaborating closely with the product team to enhance quality and address gaps
  • Embody our Culture and Values
  • Fulltime
Read More
Arrow Right