Senior Backend Javascript Developer Jobs

Senior Backend Developer

IT House is looking for a skilled and experienced Backend Developer with experti...

Location

Portugal , Lisboa

Salary:

Not provided

Egor

Expiration Date

Until further notice

Requirements

Bachelors degree in Computer Science, Engineering, or a related field, or equivalent practical experience
5+ years of experience in backend development
Proven experience with TypeScript and JavaScript
Experience with backend frameworks such as Node.js or NestJS
Strong proficiency in TypeScript
Solid understanding of server-side programming and architecture
Experience with relational and/or NoSQL databases such as PostgreSQL or MongoDB
Proficiency in building RESTful
Familiarity with version control tools such as Git
Strong problem-solving skills and the ability to think critically and independently

Job Responsibility

Design and Develop Backend Services: Architect, design, and develop robust, scalable, and secure backend services and APIs using TypeScript
Database Management: Design, implement, and manage database schemas, queries, and transactions to support application functionality
Collaborate with Cross-Functional Teams: Work closely with frontend developers, product managers, and other stakeholders to understand requirements and deliver efficient solutions
Optimize Performance: Ensure high performance and responsiveness of applications by optimizing server-side logic and database queries
Code Review and Mentorship: Conduct code reviews to maintain code quality and provide mentorship to junior developers
Testing and Debugging: Write and execute unit and integration tests, and identify and fix bugs or performance issues
Stay Updated with Industry Trends: Keep up to date with the latest industry trends in backend development and TypeScript, ensuring that the team is using the best possible techniques and tools

New

Senior Engineer I - Node Developer

We are looking for a highly capable Senior Engineer I - Node Developer to optimi...

Location

India , Noida, Uttar Pradesh

Salary:

Not provided

Daxko

Expiration Date

Until further notice

Requirements

Bachelor's degree in computer science, information science, or similar OR equivalent experience
At least 4 years of experience as a Node developer
Extensive knowledge of JavaScript, web stacks, libraries, and frameworks
Knowledge of front-end technologies such as HTML5 and CSS3
Superb interpersonal, communication, and collaboration skills
Exceptional analytical and problem-solving aptitude
Great organizational and time management skills
Availability to resolve urgent web application issues outside of business hours

Job Responsibility

Develop and maintain all server-side network components
Ensure optimal performance of the central database and responsiveness to front-end requests
Collaborate with front-end developers on the integration of elements
Design customer-facing UI and back-end services for various business processes
Develop high-performance applications by writing testable, reusable, and efficient code
Implement effective security protocols, data protection measures, and storage solutions
Run diagnostic tests, repair defects, and provide technical support
Document Node.js processes, including database schemas, as well as prepare reports
Recommend and implement improvements to processes and technologies
Stay informed of advancements in the field of Node.js development

What we offer

Hybrid work model
Leave entitlements
Hospitalization/caregiving leaves
Paid parental leaves (Maternity, Paternity, & Adoption)
Group Health Insurance
Accidental Insurance
Tax-saving reimbursements
Provident Fund (PF)
Casual work environments
Company Events and Celebrations

Fulltime

Senior Software Development Engineer

Design and develop digital software applications and platforms to transform heal...

Location

United States , Scottsdale

Salary:

151757.00 - 180000.00 USD / Year

CVS Health

Expiration Date

Until further notice

Requirements

Bachelor's degree (or foreign equivalent) in Computer Science, Computer Information Systems, Electrical Engineering, Information Technology, or a related field
5 years of post-baccalaureate experience in the job offered or a related occupation
5 years of experience with CI/CD, Jenkins, GIT, or DevOps
5 years of experience with MySQL or NoSQL
5 years of experience with XML, JSON, HTML, CSS, or JavaScript
5 years of experience with Frameworks: Angular, JavaScript, React, jQuery, Ajax, Bootstrap, or Backbone
5 years of experience with REST, SOAP, or Web Service APIs
5 years of experience with Object-oriented JavaScript
5 years of experience with Software development lifecycle (SDLC)
5 years of experience with Developing backend services, performing code reviews, and collaborating with peers on software development solutions

Job Responsibility

Design and develop digital software applications and platforms
Analyze user needs and develop software solutions to meet business requirements
Determine feasibility of solutions design and prepare technical design documentation
Upgrade existing software applications and/or systems to improve functionality and features with a focus on performance, reliability, and maintainability
Write and review high quality code and perform unit and/or automation testing
Support applications, systems, and databases used to process prescriptions, claims, and related healthcare activities
Collaborate with cross-functional teams on applications development, technical requirements, code review, project deliverables, quality assurance, and software development best practices
Mentor junior team members

What we offer

Bonus, commission or short-term incentive program
Equity award program
Medical benefits
Dental benefits
Vision benefits
401(k) retirement savings plan
Employee Stock Purchase Plan
Term life insurance plan
Short-term disability benefits
Long-term disability benefits

Fulltime

Senior UI Developer

Senior UI Developer role at Citi, responsible for building high quality, modern,...

Location

Canada , Mississauga

Salary:

120800.00 - 170800.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

8+ years of hands-on professional experience in front-end/UI development using Angular (preferably Angular 8+)
Proven track record in a leadership role (VP, or similar) in a UI/Frontend development capacity
Experience in Micro Frontend(MFE) architecture building scalable and modular web applications
Strong expertise in JavaScript/TypeScript, HTML5, CSS3, SCSS, and Responsive Design
Experience with RESTful APIs, GraphQL, and integrating front-end components with backend services
Proficiency in UI/UX best practices and building highly interactive web applications
Strong understanding of frontend build tools (Webpack, Angular CLI, npm, yarn, gulp etc.) and version control systems like Git
Multiple years of experience with software engineering best practices (unit testing, automation, design patterns, peer review, etc.)
Clear understanding of building horizontally scalable, highly available, highly resilient, and low latency applications
Bachelor's degree/University degree or equivalent experience

Job Responsibility

Lead and mentor a team of UI/Frontend developers, fostering a culture of collaboration and excellence
Define the UI/UX strategy, architecture, and best practices in alignment with the company's vision
Collaborate with cross-functional teams including Product, Design, and Backend teams to deliver end-to-end solutions
Develop and engineer front end solutions within an Agile software delivery team
Architect, design, and implement scalable and high-performance Angular applications
Drive code reviews, debugging, testing, and performance optimization for all UI layers
Stay updated with the latest Angular versions and trends
Partner continuously with stakeholders, UX and QA
Provide thought leadership and coaching for junior team members
Collaborate with technical leadership to ensure work is aligned to the broad technical strategy

What we offer

Global benefits designed to support well-being, growth and work-life balance
Equal opportunity employer
Reasonable accommodation for persons with disabilities

Fulltime

Senior Frontend Developer

We are looking for a Senior Frontend Developer with strong JavaScript and ReactJ...

Location

Portugal , Lisbon, Braga or Coimbra

Salary:

Not provided

Egor

Expiration Date

Until further notice

Requirements

5+ years of experience in frontend development
Strong command of JavaScript and TypeScript
3+ years of experience with React.js and modern frontend frameworks
Solid understanding of HTML5, CSS3, and responsive design
Experience with RESTful APIs and asynchronous request handling
Familiarity with Git and version control tools

Job Responsibility

Develop and maintain user interfaces using ReactJS, TypeScript, and modern frontend workflows like Redux and Flux
Collaborate with cross-functional teams (product managers, designers, backend developers) to create high-quality products
Optimize UI/UX designs for speed and scalability
Conduct code reviews, mentor junior developers, and ensure coding standards are maintained
Write and execute unit tests for frontend code and resolve any performance issues

Senior Salesforce Developer

This role involves managing technical aspects of Salesforce.com® implementation,...

Location

United States , Atlanta

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Minimum of 5 years of experience in the detail-oriented Services industry as a Salesforce Developer
Proficient in Atlassian Jira
Extensive experience in backend development
Demonstrated ability to develop and implement business logic
Strong understanding of client-side scripting and JavaScript frameworks, including jQuery
In-depth knowledge of cloud technologies
Proven experience in AB Testing
Familiarity with Agile Scrum methodologies
Proficiency in Ajax
Experience in API development

Job Responsibility

Facilitate the technical development and deployment of Salesforce.com® functionalities
Work with business analysts, technical architects, and developers to convert user stories into technical designs
Coordinate and manage onshore and offshore development teams
Maintain data models, data dictionaries, and technical documentation
Collaborate with MuleSoft and SAP CPI integration teams
Monitor application performance and provide technical support

What we offer

Medical, vision, dental, and life and disability insurance
Eligibility to enroll in company 401(k) plan

Fulltime

New

Senior Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...

Location

Portugal

Salary:

4650.00 - 5800.00 EUR / Month

Fundraise Up

Expiration Date

Until further notice

Requirements

7+ years of professional fullstack development experience
Deep understanding of modern JavaScript (event loop, closures, promises, prototypes)
Expert-level proficiency with React and its ecosystem (familiarity with Vue is a plus)
Strong backend expertise with Node.js (experience with Koa or NestJS is highly preferred)
Experience with Webpack configuration, performance optimization, and profiling
A keen eye for detail and a high sense of ownership and accountability for your work

Job Responsibility

Design, build, and maintain resilient frontend and backend features using React and Node.js
Develop our core products, including donation checkouts, embeddable widgets, and donor/partner portals
Architect and develop system components that scale across millions of monthly transactions
Write clean, well-documented, and thoroughly testable code
Drive architecture and technical design discussions to find elegant solutions to complex problems
Mentor peers by conducting thoughtful code reviews and providing constructive feedback
Partner with product managers and designers to clarify requirements and shape the roadmap
Proactively identify and resolve bugs, performance bottlenecks, and optimization opportunities

What we offer

31 days off
100% paid telemedicine plan
Home Office Setup Assistance: the company offers assistance with purchasing furniture (office chair, office desk, monitor) and other items to create a comfortable workspace
English learning courses
Relevant professional education
Gym or swimming pool
Co-working
Remote working
Stock options

Fulltime

New

Senior Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...

Location

Armenia

Salary:

Not provided

Fundraise Up

Expiration Date

Until further notice

Requirements

7+ years of professional fullstack development experience
Deep understanding of modern JavaScript (event loop, closures, promises, prototypes)
Expert-level proficiency with React and its ecosystem (familiarity with Vue is a plus)
Strong backend expertise with Node.js (experience with Koa or NestJS is highly preferred)
Experience with Webpack configuration, performance optimization, and profiling
A keen eye for detail and a high sense of ownership and accountability for your work

Job Responsibility

Design, build, and maintain resilient frontend and backend features using React and Node.js
Develop our core products, including donation checkouts, embeddable widgets, and donor/partner portals
Architect and develop system components that scale across millions of monthly transactions
Write clean, well-documented, and thoroughly testable code
Drive architecture and technical design discussions to find elegant solutions to complex problems
Mentor peers by conducting thoughtful code reviews and providing constructive feedback
Partner with product managers and designers to clarify requirements and shape the roadmap
Proactively identify and resolve bugs, performance bottlenecks, and optimization opportunities

What we offer

31 days off
100% paid telemedicine plan
Home Office Setup Assistance: the company offers assistance with purchasing furniture (office chair, office desk, monitor) and other items to create a comfortable workspace
English learning courses
Relevant professional education
Gym or swimming pool
Co-working
Remote working
Stock options

Fulltime

Senior Backend Javascript Developer

Capicua Full Stack Creative Hub

Location:

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 07, 2025

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Capicua Full Stack Creative Hub

Location:

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Requirements:

Nice to have:

Additional Information:

Job Posted:December 07, 2025

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Category:
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Contract Type:
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Job Posted:
December 07, 2025