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senior software engineer i - backend Jobs in Karachi

senior software engineer i - backend

software engineer

senior stack engineer

Pivotize Consulting

Technology Stack:Angular 12+, .NET Core 8, SQL Server 2019 Enterprise Edition, Redis, SQL Lite, ODataRole Summary:We are seeking a highly experienced Full-Stack Engineer responsible for end-to-end performance, security, and release optimization across frontend, backend, and infrastructure layers. This role will focus on improving system speed, scalability, and resilience while ensuring compliance with modern white-box, grey-box, and black-box testing standards.Key Responsibilities:&middot; Profile and optimize Angular 12+ components, applying lazy loading, OnPush strategy, and efficient data handling.&middot; Analyze and refactor .NET Core 8 APIs for performance, scalability, and security.&middot; Optimize SQL Server queries, stored procedures, indexes, and implement advanced features like partitioning, materialized views, columnstore Indexes, In-Memory OLTP, Query Store, controls (CPU, memory, and I/O resource allocation), Scale-Out with Sharding.&middot; Conduct release management optimization: IIS tuning, caching strategies, connection pooling, and CI/CD performance improvements.&middot; Collaborate with product leadership to define and achieve measurable performance goals.&middot; Conduct and close pen testing issues ensuring adherence to OWASP standards.&middot; Design scalable microservices-ready architecture for long-term growth.Required Skills&middot; 8+ years of full-stack development experience in Angular, .NET Core, and SQL Server.&middot; Expert in SQL Server performance tuning, query optimization, indexing, and partitioning.&middot; Strong understanding of IIS performance configuration and Redis caching.&middot; Hands-on with performance profiling tools (.NET Profiler, SQL Profiler, Chrome DevTools, Lighthouse).&middot; Experience in microservices design, Docker, Kubernetes, and cloud deployment pipelines.&middot; Knowledge of OWASP and security testing tools (Burp Suite, OWASP ZAP).Preferred Skills / Experience&middot; Experience optimizing enterprise-grade web platforms handling large data sets.&middot; Background in DevOps and CI/CD pipeline performance tuning.Key Performance Indicators (KPIs)&middot; Reduce page load time to under 2 seconds for major modules.&middot; Achieve 60% reduction in average API response time.&middot; Resolve 100% of identified pen testing issues within SLA.&middot; Implement database improvements reducing query execution time below 2 secondJob Type: Full-timeApplication Question(s):<ul><li>What is your current salary?</li><li>What is your expected salary?</li><li>What is your notice period?</li><li>Since it's an on-site role, would you be able to commute to Bahria Complex 1, M.T.Khan Road?</li></ul>Work Location: In person

Senior Full-Stack Engineer

Confiz

<div>We are hiring a Senior Full Stack Engineer (Java + React) with 5+ years of experience to design, develop, and maintain scalable software solutions for Supply Chain and warehouse management. The ideal candidate will have strong expertise in Java, Spring Boot, and React, along with cloud technologies, and the flexibility to work from 2 PM to 11 PM PKT to collaborate with global teams.
Responsibilities:
<ul><li>Develop full-stack software systems to support Supply Chain services and warehouse management.
</li><li>Design, architect, and implement frontend (React) and backend (Java/Spring Boot) solutions for complex business problems.
</li><li>Ensure the delivery of high-quality, scalable, and maintainable code with proper testing.
</li><li>Document system designs and technical specifications.
</li><li>Provide on-call support for production systems owned by the team.
</li></ul>Requirements:
<ul><li>5+ years of professional experience in full-stack development (Java + React).
</li><li>Strong proficiency in Backend: Java, Spring Boot, Microservices, REST APIs and Frontend: React.js, JavaScript/TypeScript, modern UI frameworks
</li><li>Experience with distributed systems and large-scale applications.
</li><li>Expertise in incident management, debugging, and root cause analysis.
</li><li>Hands-on experience with messaging systems (Kafka) and databases (SQL/NoSQL).
</li><li>Proficiency in cloud platforms (AWS, Kubernetes); GCP is a plus.
</li><li>Familiarity with CI/CD pipelines (GitLab, Terraform), logging (New Relic, Splunk), and observability tools.
</li><li>Ability to design and articulate scalable system architectures.
</li><li>Flexibility to work from 2 PM to 11 PM PKT for team collaboration.
</li><li>Prior experience in Supply Chain is a plus.
</li></ul>We have an amazing team of 700+ individuals working on highly innovative enterprise projects &amp; products. Our customer base includes Fortune 100 retail and CPG companies, leading store chains, fast-growth fintech, and multiple Silicon Valley startups.
What makes Confiz stand out is our focus on processes and culture. Confiz is ISO 9001:2015 (QMS), ISO 27001:2022 (ISMS), ISO 20000-1:2018 (ITSM), ISO 14001:2015 (EMS), ISO 45001:2018 (OHSMS) Certified. We have a vibrant culture of learning via collaboration and making workplace fun.
People who work with us work with cutting-edge technologies while contributing success to the company as well as to themselves.
To know more about Confiz Limited, visit: https://www.linkedin.com/company/confiz-pakistan/</div>

Senior Full Stack Engineer (Java + React)

DotClick

Shift Timing: 5:00 PM &ndash; 1:00 AM (Evening Shift) Experience: 3&ndash;5 Years Employment Type: Full-timeAbout the RoleWe are seeking a highly skilled Senior MERN Stack Developer to join our dynamic development team. The ideal candidate will have strong technical expertise across the MERN (MongoDB, Express.js, React.js, Node.js) stack, a passion for building scalable web applications, and the ability to lead and mentor junior developers.Key Responsibilities<ul><li>Design, develop, and maintain high-quality, scalable, and secure web applications using the MERN stack.</li><li>Collaborate with cross-functional teams including UI/UX designers, product managers, and QA engineers.</li><li>Lead code reviews, provide mentorship, and ensure best coding practices across the team.</li><li>Optimize applications for maximum performance, responsiveness, and scalability.</li><li>Integrate RESTful APIs and third-party services.</li><li>Write clean, maintainable, and efficient code following industry standards.</li><li>Troubleshoot, debug, and upgrade existing applications.</li><li>Stay updated with the latest trends and technologies in full-stack development.</li></ul>Required Skills &amp; Qualifications<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field.</li><li>3&ndash;5 years of professional experience as a MERN Stack Developer or similar role.</li><li>Strong proficiency in React.js, Node.js, Express.js, and MongoDB.</li><li>Solid understanding of JavaScript (ES6+), HTML5, and CSS3.</li><li>Experience with version control systems such as Git.</li><li>Strong understanding of RESTful API design and integration.</li><li>Knowledge of cloud services (AWS, Azure, or GCP) is a plus.</li><li>Familiarity with CI/CD pipelines and DevOps practices is an advantage.</li><li>Excellent problem-solving skills and attention to detail.</li><li>Strong communication and teamwork abilities.</li></ul>Perks &amp; Benefits<ul><li>Competitive salary and performance bonuses.</li><li>Opportunity to work on exciting and challenging projects.</li><li>Collaborative and supportive team environment.</li><li>Flexible and friendly work culture.</li><li>Continuous learning and professional growth opportunities.</li></ul>Shift Details<ul><li>Days:</li><li>Monday to Friday: 5PM to 1 AM</li><li>Saturday: 2PM to 7 PM</li></ul>Job Type: Full-timePay: Rs70,000.00 - Rs90,000.00 per monthWork Location: In person

Senior MERN Stack Developer

UTF Labs

Junior Full Stack Engineer (NextJS, React, TypeScript)Are you a passionate and motivated developer eager to grow your career in full-stack development? We&rsquo;re looking for a Fresh Graduate Full Stack Engineer with hands-on experience through freelance work or personal projects. If you&rsquo;re excited about building modern, high-performance web applications and want to work with the latest technologies, we&rsquo;d love to meet you!What You&rsquo;ll Do:<ul><li>Full Stack Development: Assist in designing, developing, and maintaining full-stack web applications using NextJS, React, and TypeScript.</li><li>NextJS Projects: Learn and contribute to features like Server-Side Rendering (SSR), Static Site Generation (SSG), and API routes for optimized performance.</li><li>Frontend Development: Create clean, responsive, and user-friendly interfaces using React and TailwindCSS.</li><li>Backend Support: Work on RESTful APIs, integrate with PostgreSQL, and contribute to backend logic under the guidance of senior engineers.</li><li>Database Management: Understand and assist in designing efficient database schemas and writing optimized queries.</li><li>TypeScript Coding: Write maintainable, type-safe code and follow best practices for scalability and performance.</li><li>Testing &amp; Debugging: Participate in testing and debugging to improve product quality.</li><li>Version Control: Use Git and collaborative workflows on GitHub/GitLab.</li><li>Collaboration: Work closely with designers and senior developers to turn ideas into working features.</li><li>Learning &amp; Growth: Continuously explore new tools and frameworks to enhance your development skills.</li></ul>What We&rsquo;re Looking For:<ul><li>Education: Bachelor&rsquo;s degree in Computer Science, Software Engineering, or a related field.</li><li>Experience: Fresh graduate with freelance, internship, or personal project experience in web development.</li><li>Technical Knowledge:</li><li>Basic to intermediate knowledge of NextJS, React, and TypeScript.</li><li>Understanding of PostgreSQL or any relational database.</li><li>Familiarity with TailwindCSS or modern CSS frameworks.</li><li>Comfortable using Git for version control.</li><li>Mindset:</li><li>Quick learner with a problem-solving attitude.</li><li>Passionate about writing clean, efficient, and reusable code.</li><li>Strong communication and teamwork skills.</li><li>Eagerness to grow under mentorship and take on new challenges.</li></ul>Why Join Us?<ul><li>Career Growth: Learn directly from experienced engineers and work on real-world projects.</li><li>Innovative Environment: Get hands-on experience with the latest web technologies.</li><li>Supportive Team: Collaborate with a team that values learning, feedback, and improvement.</li><li>Flexible Culture: Enjoy a friendly, flexible, and growth-oriented workplace.</li></ul>Job Type: Full-timePay: Rs50,000.00 - Rs70,000.00 per monthEducation:<ul><li>Bachelor's (Required)</li></ul>Work Location: In person

Junior Full Stack Engineer (NextJS, React, TypeScript)

SOC Solutions LLC

Position: Senior React Native Engineer Location: Karachi (On-site) Timing: 12 PM &ndash; 9 PM (Pakistan Time) Company: Botmer.ioAbout Botmer.io Botmer.io is a global AI-focused software development and staff-augmentation company working with fast-growing startups in the US, Europe, and Middle East. We build AI-driven applications, mobile apps, SaaS platforms, and provide dedicated engineering teams to international clients.We are hiring an experienced Senior React Native Engineer to join our high-performing engineering team in Karachi.Responsibilities<ul><li>Build and maintain high-quality React Native mobile applications</li><li>Work closely with backend, UI/UX, and product teams</li><li>Optimize app performance, responsiveness, and scalability</li><li>Integrate APIs, third-party libraries, Firebase, and cloud services</li><li>Write clean, reusable, and modular code with best practices</li><li>Conduct code reviews and mentor junior developers</li><li>Work with international clients and attend online meetings</li></ul>Requirements<ul><li>3&ndash;5+ years of experience in React Native</li><li>Strong knowledge of JavaScript, TypeScript, Redux, Hooks, Context API</li><li>Experience with Firebase, REST APIs, GraphQL, and push notifications</li><li>Experience with Apple/Google app deployment and store submissions</li><li>Familiarity with native modules (iOS/Android) is a plus</li><li>Strong understanding of Git and CI/CD</li><li>Strong communication and leadership skills</li><li>Must be based in Karachi and comfortable working on-site (full-time)</li></ul>Nice to Have<ul><li>Experience with Expo, Fastlane, or automated builds</li><li>Knowledge of backend (Node.js, Python, etc.)</li><li>Experience in AI-related mobile apps (bonus)</li></ul>What We Offer<ul><li>Competitive salary based on experience</li><li>Work with global clients and modern stacks</li><li>Growth opportunities, leadership roles, and technical mentorship</li><li>Professional, friendly office environment</li></ul>Job Type: Full-timeApplication Question(s):<ul><li>What was your last + expected salary for this role?</li><li>This is an urgent hiring. Would be able to join within 1-3 days?</li></ul>Experience:<ul><li>React Native Development: 6 years (Required)</li></ul>Location:<ul><li>Karachi (Required)</li></ul>Work Location: In person

Sr. React Native Engineer

HR Ways

About the job Senior AI/ML Engineer - Remote from LahoreHiring Senior AI/ML Engineer - Remote from Lahore&#65279;Client Company Introduction:&#65279;An AI-based agriculture technology firm headquartered in Canada. &#65279; &#65279;Job Description:<ul><li>Data Preparation &amp; Baseline Model:</li></ul>Audit and validate annotated datasets for quality and consistency. Define data schema, coordinate systems, and identifiers. Implement preprocessing workflows (tiling, normalization, augmentation). Split data into training, validation, and test sets for robust evaluation. Train baseline object detection or counting models (e.g., YOLO, Faster R-CNN). Deliver baseline performance report with metrics (precision, recall, counting error).<ul><li>Model Optimization &amp; Calibration:</li></ul>Optimize model performance using hyper-parameter tuning and hard example mining. Validate across diverse conditions and unseen data. Implement geospatial alignment and calculate object densities or spatial statistics. Calibrate detection thresholds for precision and recall balance. Compare automated results with manual benchmarks and refine accordingly.<ul><li>Cloud Deployment &amp; Output Generation:</li></ul>Containerize models (Docker) and deploy on AWS or Azure using services like Sage Maker, ECS, or Azure ML. Automate inference pipelines integrated with S3, Blob Storage, or Data Lakes. Generate structured outputs (CSV, GeoTIFF, GeoJSON) for analytics and visualization. Expose APIs for inference job submission and results retrieval. Test scalability and runtime efficiency across sample datasets.<ul><li>Reporting, QA, and Knowledge Transfer:</li></ul>Develop automated reporting tools summarizing predictions and insights (PDF or dashboard format). Conduct end-to-end QA for accuracy, reliability, and coordinate integrity. Document workflows, performance benchmarks, and retraining processes. Provide knowledge transfer and technical training for internal teams.Required Skills &amp; Experience:<ul><li>5+ years of experience in Machine Learning, AI, or Computer Vision.</li><li>Expertise in Python, PyTorch/TensorFlow, OpenCV, and NumPy/Pandas.</li><li>Proficiency with annotation tools such as Roboflow and CVAT for dataset labeling and management.</li><li>Experience with cloud-based ML deployment on AWS or Azure.</li><li>Strong background in object detection, segmentation, and model optimization.</li><li>Familiarity with geospatial data processing (GDAL, GeoPandas, rasterio, shapely).</li><li>Proficiency with Docker, API development (FastAPI/Flask), and automation scripts.</li><li>Excellent documentation, reporting, and presentation skills.</li></ul>Other Details:<ul><li>Work Mode: Remote from Lahore</li><li>Experience: 5+ Years in AI/ML</li></ul><ul><li>Working Timings: 9am-6pm</li></ul>About HR Ways:HR Ways is an Award winning Technical Recruitment Firm helping software houses and IT Product companies internationally and locally to find IT Talent. HR Ways is engaged by 300+ Employers worldwide ranging from worlds biggest SaaS Companies to most competitive Startups. We have entities in Dubai, Canada, US, UK, Pakistan, India, Saudi Arabia, Portugal, Brazil and other parts of the world. &#65279;Join our WhatsApp Channel https://shorturl.at/983az to stay updated or visit www.hrways.co to know more.&quot;Job Type: Full-timeWork Location: In person

Senior AI/ML Engineer

Mentruiter

Key Responsibilities<ul><li>Design, develop, and maintain scalable server-side and front-end applications using JavaScript and Typescript with a variety of frameworks, e.g. Express, Fastify, React, Next, etc. While getting opportunities to learn other technologies such as Python FastAPI, Golang, etc.</li><li>Write, review, and maintain efficient, reusable, and reliable code.</li><li>Collaborate with clients and cross-functional teams including product managers, designers, and other developers.</li><li>Work with databases (SQL and NoSQL) to ensure seamless data flow and storage.</li><li>Develop RESTful APIs and integrate third-party services as needed.</li><li>Ensure application performance, scalability, and security.</li><li>Participate in code reviews, testing, and debugging.</li><li>Stay updated with emerging technologies and apply them into operations and activities.</li><li>Help to write and maintain up to date documentation of projects being worked on.</li></ul>Requirements<ul><li>5+ years of professional experience as a Full Stack Developer.</li><li>Excellent verbal and written communication skills in the English language.</li><li>Strong proficiency in Express and React frameworks.</li><li>Proficient understanding of databases (both SQL and NoSQL).</li><li>Experience with API design and development (RESTful services).</li><li>Familiarity with cloud services on AWS is a plus.</li><li>Good understanding of Git version control.</li><li>Strong problem-solving skills and ability to work independently.</li><li>Expert with best coding practices, principles and design patterns.</li><li>Knowledge of DevOps practices and CI/CD pipelines is a plus.</li><li>Experience with writing tests and testing frameworks.</li></ul>Job Type: Full-timePay: From Rs300,000.00 per monthApplication Question(s):<ul><li>This role requires working from 2:00 PM to 11:00 PM, based out of DHA Phase 1, with 4 days onsite per week. Are you comfortable with this schedule and location? (Yes/No)</li></ul>Work Location: In person

Principal Full Stack Engineer

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