136 Javascript jobs in Karachi
Javascript Senior Software Engineer (AI SDK)
Posted 8 days ago
Job Viewed
Job Description
At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.
Innovate with Tether
Tether Finance : Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.
But that’s just the beginning:
Tether Power:
Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.
Tether Data : Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.
Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.
Tether Evolution : At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.
Why Join Us?
Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.
If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.
Are you ready to be part of the future?
About the job:
As a Senior SDK Developer, you will be a part of the team that works on the development of the new and cutting edge Tether AI SDK.
Developer-Facing SDKs & APIs Tether is committed to delivering world-class developer experiences through robust and intuitive SDKs. You will design, build, and maintain modular, versioned SDKs that abstract complex backend logic into clean, usable interfaces — enabling seamless integration with Tether’s platform across various client environments. Performance & Reliability at Scale SDKs must be fast, lightweight, and reliable — even when performing heavy and demanding operations. You’ll design resilient logic (retry policies, offline handling, batching) and contribute to the scalability of platform-facing interfaces and services powering the SDKs.
Security-First Engineering
You’ll embed best-in-class security practices directly into the SDK architecture, including secure communication, encrypted storage and rigorous input validation. Your work will help ensure safe integration pathways for all developers working with the Tether ecosystem.
+6 years of experience working with Nodejs/JavaScript in production environments. Proven track record in designing and maintaining developer-facing SDKs (npm packages, API clients, or instrumentation libraries) Strong understanding of modular architecture, versioning strategies, and semantic API design Have actively participated in the development of a complex platform Ability to quickly learn new technologies Good understanding of security practices
Nice to have
Familiar with Peer-to-Peer technologies (Kademlia, bittorent, libp2p) Comfortable with high-availability concepts Rust or C++ skills are a plus Familiar with AI domain applications (RAG, Agents, Inference, AI SDKs) Familiarity with real-time data delivery (NodeJS/other streaming)
Seniority level
Seniority level Not Applicable Employment type
Employment type Full-time Job function
Job function Information Technology Industries Technology, Information and Internet Referrals increase your chances of interviewing at Tether.io by 2x Sign in to set job alerts for “Senior Software Engineer” roles.
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Front End Developers (Angular.JS, CSS Javascript)
Posted 2 days ago
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Job Description
Experience with HTML5 / CSS3 / AngularJS / Node.Js Experience implementing and supporting high-volume CMS sites (WordPress / Drupal) Web user interface design skills and usability analysis Experience with monitoring tools to pinpoint performance issues PREFERRED QUALIFICATIONS
User experience, user interface, user interaction, and/or front-end development experience Experience with the following: Restful Web Services Ember.js AngularJS Backbone MySQL Node.js Git Experience developing consumer-facing web applications Responsive development for multiple screen sizes and resolutions RESPONSIBILITIES
Create dynamic, high volume websites and mobile apps from design concept to implementation Complete CSS styling and layout of pages while maintaining browser compatibility Develop JavaScript to interact with industry standard libraries for rich client interactions on desktop and mobile apps Work with a project architect and/or technical lead to confirm and substantiate functional and technical designs and effectively communicate concerns Install and configure open source server technologies including Apache HTTPD, PHP, MySQL and others Leverage GitHub for software configuration management Perform peer code reviews, learn and deploy new technologies as needed OTHER DETAILS
Job Type: Full Time/Permanent Number of Positions: Two (2) Minimum Education: Bachelor's Degree or Equivalent Information Technology and Services - Karachi, Pakistan
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Senior Code Reviewer for LLM Data Training (JavaScript)
Posted 8 days ago
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Job Description
About Company SME is a platform that bridges subject-matter experts with AI projects, enabling them to contribute their knowledge to improve AI models. It offers flexible opportunities to work on tasks like data labeling, quality assurance, and domain-specific problem-solving while earning competitive pay. About the Role Responsibilities Validate code snippets using proof-of-work methodology. Identify inaccuracies in annotator ratings or explanations. Provide constructive feedback to maintain high annotation standards. Work within Project Atlas guidelines for evaluation integrity and consistency. Required Qualifications Comfortable using code execution environments and testing tools. Excellent written communication and documentation skills. Experience working with structured QA or annotation workflows. English proficiency at B2, C1, C2, or Native level. Preferred Qualifications Experience in AI training, LLM evaluation, or model alignment. Familiarity with annotation platforms. Exposure to RLHF (Reinforcement Learning from Human Feedback) pipelines. Compensation : $22 Hourly Why Join Us? Join a high-impact team working at the intersection of AI and software development. Your Python expertise will directly influence the accuracy, safety, and clarity of AI-generated code. This role offers remote flexibility, milestone-based delivery, and competitive compensation. Seniority level
Seniority level Mid-Senior level Employment type
Employment type Contract Job function
Job function Quality Assurance, Engineering, and Information Technology Industries Software Development, Data Infrastructure and Analytics, and IT Services and IT Consulting Referrals increase your chances of interviewing at SME Work by 2x Get notified about new Frontend Developer jobs in
Pakistan . Sindh, Pakistan PKR80,000.00-PKR150,000.00 3 months ago Content Writer (Remote and International US)
Sindh, Pakistan PKR70,000.00-PKR100,000.00 2 months ago Freelance Peer Reviewer - Gastroenterology and Hepatology
SaaS RegTech Analyst & Whitepaper Writer (Product & Technology Marketing)
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Software Engineer

Posted 20 days ago
Job Viewed
Job Description
NCR Atleos, headquartered in Atlanta, is a leader in expanding financial access. Our dedicated 20,000 employees optimize the branch, improve operational efficiency and maximize self-service availability for financial institutions and retailers across the globe.
**Job Duties for Software Engineer II**
**Overall Description:**
+ Team member operates with minimal to no supervision in many areas while they still may need some direction in others, especially more complex work.
+ Generally, work is done on a sub-system or well-defined feature within a product road-map.
+ Typical Experience Range:
+ 4 to 7 years
+ Typical Education:
+ Bachelor's Degree in a Technical Discipline
**Functional Competencies:**
**Required Skills:**
+ Have professional experience of developing applications in client server/ n-tier architecture
+ using .Net Technologies like ASP.Net, C#.Net, C++,ADO.Net and XML Web Services.
+ Experience and demonstrated knowledge with RESTful services
+ Experience and demonstrated knowledge with SQL and any RDBMs e.g. Oracle, SQL Server.
+ Knowledge of distributed source version control system (such as Git, BitBucket, etc.) will be considered as an advantage
+ Ability to manage multiple tasks and priorities and delivering on tough deadlines.
+ Ability and willingness to travel on international assignments.
+ Have professional experience of developing crystal reports.
+ Experience in implementing distributed architecture using HADOOP.
+ Experience in the implementation of TLS 1.2 protocol
+ Experience in designing user interfaces using Angular,React and Ember
+ Experience of developing dashboards using Microsoft Power BI tools
+ Experience in working on Web servers like IIS 6.0, 7.0
+ Expert level skills in debugging techniques
+ Skilled in problem solving and troubleshooting with proven ability to enhance and improve existing procedures and practices
**Continuous Improvement:**
+ Consults with own & other teams to collect feedback on work practices
+ Recommends new industry-leading practices to improve productivity & efficiency
+ Reviews code to address issues, using root cause analyses to eliminate them in future
+ Seeks out novel & efficient ways of working to develop solutions & products that add value to customers
**Quality Design & Assurance:**
+ Able to communicate operational definition of 'quality' to ensure all teams have clear expectations and standards of excellence
+ Ensures existing processes are followed, identifies new processes as necessary to meet standards of excellence criteria
+ Works to eliminate critical and high priority defects, ensuring acceptance criteria are met
+ Understands operational, technical, and functional needs of the product and reviews test cases to deliver a positive end-user experience
**Software Design & Development:**
+ Consults with internal & external stakeholders to gather understanding of domain, customer & strategic requirements
+ Effectively translates requirements & user stories into SW design, recognizing where gaps in understanding exist that can impact building of code
+ Designs beyond scope if necessary to build right solution
+ Evaluates options for re-use of existing SW to accelerate or improve product delivery
**Software Engineering Best Practices:**
+ Maintains a deep understanding of the SW development life cycle
+ Seeks out knowledge and training to remain current on best practices and technologies
+ Utilizes knowledge of engineering best practices to ensure quality throughout the software development life cycle
+ Proposes modifications to the life cycle based on lessons learned
+ Understands industry standards and best practices for quality testing and determines the best way to apply them within the organization
**Trouble Shooting:**
+ Analyzes customers' problems & develops testable theories to diagnose solution / product code issues
+ Utilizes range of strategies, techniques & tools to investigate possible resolutions to solve issues
+ Determines best possible solution for increasingly complex problems, quickly implementing solution to reduce downtime for customer.
#Li-GB2 #Li-Hybrid
Offers of employment are conditional upon passage of screening criteria applicable to the job.
**EEO Statement**
NCR Atleos is an equal-opportunity employer. It is NCR Atleos policy to hire, train, promote, and pay associates based on their job-related qualifications, ability, and performance, without regard to race, color, creed, religion, national origin, citizenship status, sex, sexual orientation, gender identity/expression, pregnancy, marital status, age, mental or physical disability, genetic information, medical condition, military or veteran status, or any other factor protected by law.
**Statement to Third Party Agencies**
To ALL recruitment agencies: NCR Atleos only accepts resumes from agencies on the NCR Atleos preferred supplier list. Please do not forward resumes to our applicant tracking system, NCR Atleos employees, or any NCR Atleos facility. NCR Atleos is not responsible for any fees or charges associated with unsolicited resumes.
Software Engineer
Posted 5 days ago
Job Viewed
Job Description
Software Engineer
role at
NCR Atleos Join to apply for the
Software Engineer
role at
NCR Atleos Direct message the job poster from NCR Atleos About NCR Atleos
NCR Atleos, headquartered in Atlanta, is a leader in expanding financial access. Our dedicated 20,000 employees optimize the branch, improve operational efficiency and maximize self-service availability for financial institutions and retailers across the globe.
Overall Description
Job Duties for Software Engineer II
Team member operates with minimal to no supervision in many areas while they still may need some direction in others, especially more complex work. Generally, work is done on a sub-system or well-defined feature within a product road-map. Typical Experience Range: 4 to 7 years Typical Education: Bachelor’s Degree in a Technical Discipline
Functional Competencies
Required Skills:
Have professional experience of developing applications in client server/ n-tier architecture using .Net Technologies like ASP.Net, C#.Net, C++,ADO.Net and XML Web Services. Experience and demonstrated knowledge with RESTful services Experience and demonstrated knowledge with SQL and any RDBMs e.g. Oracle, SQL Server. Knowledge of distributed source version control system (such as Git, BitBucket, etc.) will be considered as an advantage Ability to manage multiple tasks and priorities and delivering on tough deadlines. Ability and willingness to travel on international assignments. Have professional experience of developing crystal reports. Experience in implementing distributed architecture using HADOOP. Experience in the implementation of TLS 1.2 protocol Experience in designing user interfaces using Angular,React and Ember Experience of developing dashboards using Microsoft Power BI tools Experience in working on Web servers like IIS 6.0, 7.0 Expert level skills in debugging techniques Skilled in problem solving and troubleshooting with proven ability to enhance and improve existing procedures and practices
Continuous Improvement
Consults with own & other teams to collect feedback on work practices Recommends new industry-leading practices to improve productivity & efficiency Reviews code to address issues, using root cause analyses to eliminate them in future Seeks out novel & efficient ways of working to develop solutions & products that add value to customers
Quality Design & Assurance
Able to communicate operational definition of ‘quality’ to ensure all teams have clear expectations and standards of excellence Ensures existing processes are followed, identifies new processes as necessary to meet standards of excellence criteria Works to eliminate critical and high priority defects, ensuring acceptance criteria are met Understands operational, technical, and functional needs of the product and reviews test cases to deliver a positive end-user experience
Software Design & Development
Consults with internal & external stakeholders to gather understanding of domain, customer & strategic requirements Effectively translates requirements & user stories into SW design, recognizing where gaps in understanding exist that can impact building of code Designs beyond scope if necessary to build right solution Evaluates options for re-use of existing SW to accelerate or improve product delivery
Software Engineering Best Practices
Maintains a deep understanding of the SW development life cycle Seeks out knowledge and training to remain current on best practices and technologies Utilizes knowledge of engineering best practices to ensure quality throughout the software development life cycle Proposes modifications to the life cycle based on lessons learned Understands industry standards and best practices for quality testing and determines the best way to apply them within the organization
Trouble Shooting
Analyzes customers’ problems & develops testable theories to diagnose solution / product code issues Utilizes range of strategies, techniques & tools to investigate possible resolutions to solve issues Determines best possible solution for increasingly complex problems, quickly implementing solution to reduce downtime for customer.
Offers of employment are conditional upon passage of screening criteria applicable to the job.
EEO Statement
NCR Atleos is an equal-opportunity employer. It is NCR Atleos policy to hire, train, promote, and pay associates based on their job-related qualifications, ability, and performance, without regard to race, color, creed, religion, national origin, citizenship status, sex, sexual orientation, gender identity/expression, pregnancy, marital status, age, mental or physical disability, genetic information, medical condition, military or veteran status, or any other factor protected by law.
Statement to Third Party Agencies
To ALL recruitment agencies: NCR Atleos only accepts resumes from agencies on the NCR Atleos preferred supplier list. Please do not forward resumes to our applicant tracking system, NCR Atleos employees, or any NCR Atleos facility. NCR Atleos is not responsible for any fees or charges associated with unsolicited resumes.
Seniority level
Seniority level Mid-Senior level Employment type
Employment type Full-time Job function
Job function Engineering and Information Technology Industries Banking Referrals increase your chances of interviewing at NCR Atleos by 2x Sign in to set job alerts for “Software Engineer” roles.
Front-end Developer in Karachi | Webnet Pakistan
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Intermediate Full-Stack Software Developer
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Karachi Division, Sindh, Pakistan 1 day ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
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Software Engineer
Posted 5 days ago
Job Viewed
Job Description
Responsibilities: - Designing, developing, testing and maintaining software applications and systems - Collaborating with cross-functional teams to identify and solve software issues - Evaluating user feedback and ensuring software meets project specifications - Upgrading existing software and integrating new features Job Specification
- Strong programming skills in Java, Python and C++ - Knowledge of databases, web technologies and software development methodologies - Experience with software testing and debugging - Ability to work and collaborate in a team environment
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Software Engineer
Posted 5 days ago
Job Viewed
Job Description
Develop and maintain web applications using JavaScript, HTML, CSS, and related technologies. Design, develop, and maintain database schema, queries, and related data management systems. Develop and maintain RESTful APIs for front-end to back-end communication. Collaborate with designers, developers, and product managers to ensure high-quality code and user experience. Troubleshoot and debug applications to ensure optimal performance and functionality. Write clean, maintainable, and reusable code. Stay up-to-date with emerging trends and technologies in web development. Participate in code reviews, testing, and deployment processes. Requirements
Experience in developing web and mobile applications using JavaScript-based technologies. Strong proficiency in front-end technologies such as React, and NextJS. Experience with back-end technologies such as Node.js, Express.js. Expertise in building mobile applications using React Native. Familiarity with SQL and NoSQL databases such as MySQL, MongoDB, or PostgreSQL. Experience with Git and version control systems. Excellent problem-solving skills and ability to work independently and as part of a team. Strong communication and interpersonal skills. Blockchain experience is a plus Perks and Benefits
Market Competitive Salary Health Insurance Fuel Allowance Annual Increment Performance Based Bonuses
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Software Engineer
Posted 8 days ago
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Job Description
Software Engineer
role at
Flourish Health . Get AI-powered advice on this job and more exclusive features. This range is provided by Flourish Health. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range
$60,000.00/yr - $120,000.00/yr We provide IT services and consulting tailored for small healthcare businesses and private practices. Our mission is to help providers enhance efficiency, ensure data security, and adopt cost-effective technology solutions that support high-quality care. In addition to healthcare IT support, we develop custom software solutions designed to meet the unique needs of small healthcare organizations. Our team builds secure, user-friendly, and HIPAA-compliant tools that simplify operations and improve patient outcomes. Flourish Health is also exploring opportunities in the blockchain industry, aiming to leverage decentralized technologies to improve data integrity, transparency, and trust in healthcare and beyond. At Flourish Health, we make technology simple, reliable, and accessible—so healthcare professionals can thrive in a digital world. The Role
We're building a project—a fully on-chain decentralized borrowing protocol—and currently looking to hire two Web3 developers: Frontend Developer – to help update and improve our React application. Smart Contract Developer – to build and integrate contracts using Solidity, ethers.js, wagmi, etc. We aim to hire both roles by next month. As a small, fast-moving startup, we focus on working with skilled, motivated builders who can move quickly. These are short-term roles, with potential for extension if there's a good fit. Experience with multi-chain (EVM) development is a plus. Ideal Profile
Hands-on experience building in Web3, with strong skills in React or Solidity/EVM tools like ethers.js, wagmi, or hardhat. At least 3 years of experience, ideally as a Software Engineer. Self-motivated, fast-moving, able to take ownership without heavy structure. Strong analytical skills. Passionate about blockchain, DeFi, or the future of technology in healthcare. What's on Offer?
Join a fast-moving startup building a fully on-chain decentralized borrowing protocol and shape the future of Web3 in healthcare and beyond. Seniority level
Mid-Senior level Employment type
Full-time Job function
Engineering and Information Technology Industries
Software Development and IT Services and IT Consulting
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Software Engineer
Posted 8 days ago
Job Viewed
Job Description
SpurSol we build teams that are looking to challenge the norms and are obsessed with innovation. We look for individuals who take ownership and are committed to building exceptional products that create an impact for end-users. A team that takes pride in its work and continues to learn and evolve
You will be working with a team that backs each other to raise the experience for its clients. You will not only learn from the team, but you will have help when needed to achieve your goals.
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Software Engineer
Posted 13 days ago
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Job Description
The candidate must have good knowledge of networking (VPN, VLAN, and LAN). The candidate must have a good command of languages such as VB and VB.NET, and database servers. Must be an expert in VB6.0, ASP, SQL Server 2005 & 2000, Crystal Reports 10, and system analysis and design. Information Technology and Services - Karachi, Pakistan
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