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Javascript Backend Developer Jobs in Danbury, CT

BMG360

Agentic Solutions Engineer

Shelton, CT

$130K/yr

This is NOT a generalist DevOps or data engineering role. You specialize in API-first design, MCP ... Perfect for someone with a strong backend and full-stack background who is passionate about ...

Ports North

AI Full Stack Developer

Greenwich, CT · On-site

$150 - $200/hr

JavaScript/TypeScript and React (or equivalent) on the front end; Python with Django or Flask on ... back end. * Experience building internal tools, web apps, APIs, or automation workflows for ...

IBM

Software Developer Intern 2027

Poughkeepsie, NY · On-site

$19 - $25/hr

... in front-end, back-end, or full-stack environments. • Work with a variety of programming ... Python, Java, JavaScript, TypeScript, C++, Go, Rust, Swift, Kotlin, or others). • Help build user ...

CYNET SYSTEMS

Java Tech Lead

Wallingford, CT · On-site

$60 - $65/hr

Strong understanding of backend design, scalability, and performance optimization. * Strong ... Proficiency in HTML5, CSS3, JavaScript (ES6+). * Proven experience in technical leadership and team ...

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How much do javascript backend developer jobs pay per hour?

As of Sep 9, 2026, the average hourly pay for javascript backend developer in Danbury, CT is $59.07, according to ZipRecruiter salary data. Most workers in this role earn between $48.46 and $69.86 per hour, depending on experience, location, and employer.

What does a JavaScript backend developer do?

A JavaScript Backend Developer is responsible for building and maintaining the server-side logic, databases, and APIs that power web applications. They use JavaScript, often with frameworks like Node.js, to process requests, manage data, and ensure smooth communication between the frontend and backend of an application. Their work ensures that web applications are scalable, secure, and efficient. JavaScript Backend Developers also collaborate with frontend developers and other team members to deliver seamless user experiences.

What are the key skills and qualifications needed to thrive as a JavaScript backend developer, and why are they important?

To thrive as a Javascript Backend Developer, you need strong proficiency in JavaScript (especially Node.js), knowledge of backend frameworks, and a solid understanding of databases such as MongoDB or PostgreSQL. Familiarity with development tools like Git, RESTful APIs, Docker, and cloud platforms, as well as relevant certifications, is highly valuable. Excellent problem-solving, teamwork, and communication skills help you collaborate effectively and deliver robust solutions. These abilities are crucial for building scalable, secure, and maintainable backend services that power modern applications.

What are the typical challenges a JavaScript backend developer faces when scaling applications for high traffic?

JavaScript Backend Developers, especially those working with Node.js, often encounter challenges related to handling high concurrency, optimizing database queries, and maintaining application performance under heavy load. Ensuring efficient memory management and implementing robust error handling are also critical when scaling. Working closely with DevOps and frontend teams to optimize APIs and monitor system health is essential for delivering reliable, scalable backend solutions.

What is the difference between Javascript Backend Developer vs Javascript Frontend Developer?

AspectJavascript Backend DeveloperJavascript Frontend Developer
Primary FocusServer-side development, APIs, databasesUser interface, client-side interactions
Required SkillsNode.js, databases, server managementHTML, CSS, JavaScript, UI frameworks
Work EnvironmentBack-end servers, cloud platformsWeb browsers, client devices
Common UsageBuilding APIs, server logicDesigning web pages, user experience

The main difference between a Javascript Backend Developer and a Javascript Frontend Developer lies in their focus areas. Backend developers handle server-side logic, databases, and APIs, while frontend developers focus on creating engaging user interfaces and client-side interactions. Both roles require JavaScript skills but apply them in different parts of web development projects.

What job categories do people searching Javascript Backend Developer jobs in Danbury, CT look for?

The top searched job categories for Javascript Backend Developer jobs in Danbury, CT are:

Javascript Backend Developer jobs near you

Agentic Solutions Engineer

Shelton, CT

BMG360
Marketing • 201 - 500 employees
Learn more about BMG360external

$130K/yr

Full-time

Re-posted 25 days ago

Job description

AGENTIC SOLUTIONS ENGINEER
Agentic Solutions Engineer
About the Role
We’re hiring an Agentic Solutions Engineer to be the hands-on technical backbone supporting our Agentic Solutions Architect and the broader delivery team. This is a builder’s role: you design, develop, and maintain the API-first, MCP-enabled infrastructure that powers our autonomous marketing workflows and AI-driven client solutions.

You’ll architect and implement the service layer that connects everything—MCP servers, REST APIs, Django backends, and React-powered admin interfaces—enabling the Architect to design agentic systems that actually ship. If you love writing clean Python and TypeScript, building reliable API infrastructure, and want to work at the bleeding edge of AI tooling, this role was built for you.

This is NOT a generalist DevOps or data engineering role. You specialize in API-first design, MCP protocol implementation, and full-stack internal tooling for agentic systems. You are the engineer who makes the Architect’s blueprints real.

Perfect for someone with a strong backend and full-stack background who is passionate about applying cutting-edge AI tooling to solve real-world marketing technology problems.
Responsibilities
API-FIRST INFRASTRUCTURE amp; MCP ENGINEERING
  • Design, build, and maintain RESTful and GraphQL APIs that serve as the backbone of agentic workflow systems.
  • Implement Model Context Protocol (MCP) servers that expose tools, resources, and prompts to LLM agents—enabling Claude and other agents to interface with internal and external data and services.
  • Develop webhook receivers, event-driven triggers, and real-time communication layers (WebSockets, SSE) to support autonomous agent pipelines.
  • Ensure APIs are secure, versioned, rate-limited, and observable with proper logging and distributed tracing.
  • Build and maintain the internal MCP server registry; keep tool schemas, descriptions, and input validation accurate and up to date.

BACKEND ENGINEERING — DJANGO
  • Build and extend Django-based backend services that power internal tools, client data pipelines, and agent orchestration APIs.
  • Design PostgreSQL schemas for agentic workflow state, job queuing, and audit trails.
  • Implement Django REST Framework (DRF) endpoints consumed by React frontends and external agent clients.
  • Develop background task processing using Celery and Temporal or similar for async agent jobs, polling loops, and scheduled automations.
  • Write Python integrations with LLM providers (Anthropic, AWS), marketing platform APIs (Meta, Google, GA4), and data warehouses (Snowflake).

FRONTEND TOOLING — REACT amp; REACT-ADMIN
  • Build internal admin dashboards using React-Admin to surface agentic workflow status, inspect agent job runs, and manage MCP server configurations.
  • Develop React-based monitoring and configuration UIs for the Architect and delivery teams.
  • Create reusable React components and hooks for common UI patterns across internal tool surfaces.
  • Integrate frontend tooling with Django/DRF backends and MCP-driven data sources.

AGENTIC TOOLING amp; DEVELOPER ENABLEMENT
  • Develop and maintain a reusable Python + TypeScript SDK of pre-built agent tools—platform API wrappers, data warehouse clients, webhook handlers—so new MCP servers and workflows can be stood up faster.
  • Support the Architect in prototyping and evaluating new agentic frameworks (Flowise, LangChain, custom orchestration).
  • Document MCP servers, API contracts, and SDK usage so the broader engineering team can build on your infrastructure.
  • Test and validate the accuracy and reliability of API outputs, MCP tool responses, and agentic workflow integrations.

Requirements
  • REQUIRED EXPERIENCE:
  • 3–6 years in backend or full-stack engineering roles, ideally at an agency, SaaS, or data/AI company.
  • Expert-level Python: you write clean, tested, idiomatic Python for APIs, data pipelines, and LLM integrations daily.
  • Proficient TypeScript/JavaScript: comfortable in both Node.js server contexts and React frontend work.
  • Hands-on experience building and consuming REST APIs—you understand OAuth2, JWT, API versioning, pagination, and webhook security.
  • React experience: you can build functional, component-driven UIs and are familiar with hooks, state management, and API integration patterns.
  • Familiarity with relational databases (PostgreSQL preferred) and ability to write efficient queries and design schemas.
  • Understanding of async patterns: event queues, background workers, webhooks, polling.
  • TECHNICAL SKILLS:
  • Python: FastAPI, Django/DRF, Celery, Pydantic, httpx, pytest—production-grade Python is your default.
  • TypeScript/JS: Node.js APIs, React (hooks, context, functional components), type-safe interfaces, module patterns.
  • Django: models, migrations, DRF serializers, viewsets, permissions, admin customization, Celery task integration.
  • React-Admin: custom resources, data providers, list/show/edit views, auth integration—or strong React with a fast ramp.
  • APIs: OpenAPI spec-first design, Swagger/Redoc documentation, rate limiting, CORS, versioning strategies.
  • MCP Protocol: familiarity with Model Context Protocol preferred; hands-on MCP server development is a major plus.
  • Cloud/infrastructure: AWS or GCP (Lambda, Cloud Run, S3/GCS), Docker, basic CI/CD pipelines (GitHub Actions).
  • Data: PostgreSQL, Snowflake familiarity; ETL patterns; ability to write complex SQL.

Compensation is commensurate with experience.
About Us
BMG360 is a high growth, private equity backed, tech enabled marketing agency that specializes in direct response advertisements across TV, audio, digital and direct mail. With recent acquisitions of a leading paid search and social firms, we are expanding our offerings and capabilities and are poised to become a powerhouse. Our data-driven systems deliver fixed cost leads so clients can grow their businesses rapidly and with minimal risk. From creative development to analytics, media strategy to revenue optimization, BMG360 has the expertise and knowledge to fit together all of the pieces of a successful direct response campaign and deliver powerful and profitable results.
Why BMG360?
BMG360 has been a leader in the industry since 2003, and we are growing exponentially.This staggering growth provides our employees with unparalleled opportunities to play a role in shaping the company’s direction. Each employee plays an integral role in the evolution of BMG360 so company-wide transparency is paramount. Leadership is committed to making sure the entire team knows how the company is performing in relation to our annual goals, what challenges we are facing as a company and what opportunities are on the horizon. We pride ourselves on fostering a fun and fast-paced environment to work and grow your career. At BMG360 you’ll have the opportunity to work as part of a close-knit team, working towards a common goal.
We are an equal opportunity employer and are committed to building a diverse and inclusive team. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected characteristic.

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