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Systems Limited

<div>Position: Senior IOS Developer &amp; Team Lead 
Location: Pakistan

Summary

Senior IOS Developer &amp; Team Lead at Systems Limited is deeply technical, highly collaborative, and capable of driving both product delivery and technical vision.In addition to hands-on iOS development, you will lead a team of mobile developers, define scalable architectures, and ensure high standards of code quality, performance, and mobile application security.
Responsibilities:
<ul>
<li>Lead and mentor a team of mobile developers, ensuring alignment with technical goals and delivery timelines.</li>
<li>Architect and develop scalable, secure, and maintainable IOS applications using Swift, SwiftUI, and Objective-C.</li>
<li>Collaborate with product managers, designers, and engineers to define technical solutions and deliver user-focused mobile experiences.</li>
<li>Optimize app performance across various IOS devices and OS versions.</li>
<li>Ensure strong mobile application security, including secure data handling, authentication, encryption, and protection against common mobile threats (e.g., reverse engineering, data leakage).</li>
<li>Implement and maintain CI/CD pipelines, automated testing, and deployment workflows.</li>
<li>Establish and enforce development standards, code reviews, and architectural best practices.</li>
<li>Stay updated on industry trends, IOS platform changes, and emerging mobile security practices.</li></ul> 


Requirements:
<ul>
<li>8&ndash;10 years of professional experience in IOS development, with a strong record of building and shipping production apps.</li>
<li>At least 2 years in a leadership, solution architecture, or technical mentorship role.</li>
<li>Deep expertise in Swift, SwiftUI, and Objective-C, with clean, maintainable, and testable coding practices.</li>
<li>Proficient in architectural patterns such as MVVM, VIPER, or similar scalable models.</li>
<li>Strong understanding of IOS frameworks, offline-first design, networking, and API integration.</li>
<li>Experience implementing mobile security best practices, such as keychain access, secure storage, obfuscation, and SSL pinning.</li>
<li>Demonstrated ability to release and maintain apps on the App Store.</li>
<li>Familiar with TDD, unit/UI testing, and CI/CD pipelines.</li>
<li>Excellent communication skills and experience working in agile and remote team environments.</li></ul></div>

Senior IOS Developer & Team Lead

Launch Box

Senior Backend Developer &ndash; Join Our Growing Team!Location: Emarah Suites, Main Shahra-e-Faisal, Karachi Timings: 10:00 AM &ndash; 7:00 PM Employment Type: Full-time | On-siteAbout Us: We are a dynamic and fast-growing tech company dedicated to delivering high-quality, scalable, and innovative solutions for our global clients. We value creativity, problem-solving, and a passion for technology.Position Overview: We&rsquo;re looking for a Senior Backend Developer with strong expertise in Node.js and proficiency in multiple backend technologies. You will architect, develop, and maintain scalable APIs, databases, and backend systems, ensuring optimal performance and security.Key Responsibilities: Design, develop, and maintain robust backend systems and APIs, primarily using Node.js. Work with multiple backend languages and frameworks such as Python, PHP, Java, Go, or .NET when required. Collaborate with frontend developers, mobile engineers, and DevOps teams to deliver end-to-end solutions. Optimize applications for maximum speed, scalability, and security. Manage and maintain databases (SQL &amp; NoSQL) including PostgreSQL, MySQL, MongoDB. Implement best practices for code quality, testing, and deployment. Troubleshoot and debug applications, ensuring smooth performance. Mentor junior developers and lead code reviews.Requirements: 3+ years of backend development experience. Strong expertise in Node.js (Express.js, NestJS, or similar frameworks). Experience with RESTful APIs, GraphQL, and microservices architecture. Familiarity with cloud platforms (AWS, Azure, or GCP). Strong understanding of SQL &amp; NoSQL databases. Proficiency in other backend languages such as Python, PHP, Java, Go, or .NET. Knowledge of authentication, authorization, and security best practices (OAuth, JWT, etc.). Experience with Git and CI/CD pipelines. Strong problem-solving skills and attention to detail.Nice to Have: Experience with Docker, Kubernetes, and container orchestration. Knowledge of serverless architectures. Exposure to real-time systems (WebSockets, Socket.io).Job Type: Full-timeWork Location: In person

Senior Backend Developer

Sublime Wireless Inc

Job Description &ndash; Senior Blockchain Developer (Corda Specialist)Position: Senior Blockchain Developer Location: Karachi (On-site, 9 AM &ndash; 5 PM) Experience Required: 4+ years in Blockchain Development (with proven hands-on Corda expertise) Employment Type: Full-timeAbout the RoleWe are seeking an experienced Senior Blockchain Developer with strong expertise in private blockchain platforms and proven hands-on experience in Corda technology. The ideal candidate will design, develop, and implement enterprise-grade blockchain solutions, ensuring scalability, security, and compliance for our business use cases.Key Responsibilities<ul><li>Design, develop, and deploy Corda-based blockchain applications for enterprise use cases.</li><li>Architect and implement private blockchain networks, focusing on scalability, security, and performance.</li><li>Develop and maintain CorDapps, smart contracts, and workflows on Corda.</li><li>Collaborate with cross-functional teams (business analysts, architects, DevOps, and QA) to translate requirements into technical solutions.</li><li>Integrate blockchain solutions with existing enterprise applications, APIs, and cloud platforms.</li><li>Optimize performance and security of blockchain nodes and networks.</li><li>Conduct research on emerging blockchain trends and propose innovative solutions.</li><li>Provide technical leadership and mentorship to junior and mid-level developers.</li><li>Ensure compliance with industry standards, governance models, and regulatory requirements.</li></ul>Required Skills &amp; Qualifications<ul><li>4+ years of hands-on blockchain development experience, with at least 2+ years in Corda (R3 Corda).</li><li>Proven expertise in designing and deploying CorDapps and working with Corda nodes, flows, and contracts.</li><li>Strong understanding of distributed ledger technologies (DLT) and private blockchain frameworks.</li><li>Proficiency in Java and Kotlin (essential for Corda development).</li><li>Experience with Spring Boot, RESTful APIs, Microservices architecture.</li><li>Solid understanding of cryptography, consensus mechanisms, and PKI.</li><li>Hands-on experience with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes).</li><li>Strong knowledge of relational databases (PostgreSQL, Oracle, MySQL).</li><li>Experience with CI/CD pipelines, Git, and DevOps tools.</li><li>Excellent problem-solving, debugging, and analytical skills.</li><li>Strong communication and team leadership abilities.</li></ul>Preferred Skills (Good to Have)<ul><li>Experience in Hyperledger Fabric, Quorum, or other private blockchain frameworks.</li><li>Understanding of financial services, supply chain, or enterprise-grade blockchain use cases.</li><li>Knowledge of regulatory and compliance aspects in blockchain solutions.</li></ul>Education<ul><li>Bachelor&rsquo;s or Master&rsquo;s degree in Computer Science, Software Engineering, Information Technology, or a related field.</li></ul>Job Type: Full-timePay: Rs500,000.00 - Rs650,000.00 per monthWork Location: In person

Senior Blockchain Developer (Corda Specialist)

Job Description &ndash; Mid-level Blockchain Developer (Corda Specialist)Position: Mid-level Blockchain Developer Location: Karachi (On-site, 9 AM &ndash; 5 PM) Experience Required: 2&ndash;4 years in Blockchain Development (with proven hands-on Corda expertise) Employment Type: Full-timeAbout the RoleWe are looking for a Mid-level Blockchain Developer who is passionate about building enterprise-grade blockchain solutions using Corda technology. The ideal candidate should have solid hands-on experience in developing CorDapps and working with private blockchain frameworks. This role involves collaborating with senior engineers, business teams, and clients to deliver scalable and secure blockchain solutions.Key Responsibilities<ul><li>Develop, test, and deploy CorDapps on the Corda platform.</li><li>Participate in the design and implementation of private blockchain solutions tailored to business use cases.</li><li>Work on smart contracts, Corda flows, and state management.</li><li>Assist in setting up and managing Corda nodes and networks.</li><li>Integrate blockchain applications with existing enterprise systems, APIs, and cloud platforms.</li><li>Collaborate closely with senior developers, architects, and business analysts to gather requirements and deliver solutions.</li><li>Ensure code quality, security, and performance across blockchain solutions.</li><li>Stay updated with emerging trends in Corda, DLT, and private blockchain ecosystems.</li></ul>Required Skills &amp; Qualifications<ul><li>2&ndash;4 years of professional blockchain development experience.</li><li>At least 1&ndash;2 years of hands-on experience in R3 Corda (open-source or enterprise).</li><li>Proficiency in Java and/or Kotlin (Corda&rsquo;s core languages).</li><li>Understanding of Corda architecture, contracts, flows, states, and vaults.</li><li>Experience with Spring Boot, REST APIs, and Microservices.</li><li>Familiarity with cryptography, consensus mechanisms, and security best practices.</li><li>Working knowledge of SQL databases (PostgreSQL, MySQL, Oracle).</li><li>Experience with Git, CI/CD pipelines, and basic DevOps practices.</li><li>Strong problem-solving skills and ability to work in a team environment.</li></ul>Preferred Skills (Good to Have)<ul><li>Exposure to other private blockchain frameworks (e.g., Hyperledger Fabric, Quorum).</li><li>Experience in financial services, supply chain, or enterprise business processes.</li><li>Familiarity with containerization tools (Docker, Kubernetes).</li></ul>Education<ul><li>Bachelor&rsquo;s degree in Computer Science, Software Engineering, or related field.</li></ul>Job Type: Full-timePay: Rs250,000.00 - Rs350,000.00 per monthWork Location: In person

Mid-level Blockchain Developer (Corda Specialist)

Q-Solutions

We are seeking a skilled and experienced Senior Python Developer to join our dynamic and growing tech team. The ideal candidate will possess a strong background in Python-based backend development, particularly using Flask and FastAPI, with a passion for Gen AI applications, scalable architecture, and secure coding practices. This role offers an exciting opportunity to work with modern technologies in an agile environment and be part of innovation in AI-driven product development.Key Responsibilities:<ul><li>Design, develop, and maintain robust Python applications using Flask and FastAPI, with a focus on Gen AI integration.</li><li>Work with PostgreSQL and NoSQL databases, leveraging ORM tools and data modeling best practices.</li><li>Embrace Test-Driven Development (TDD) to ensure code quality and maintainability.</li><li>Integrate systems with AWS services such as EC2, Lambda, S3, SQS, etc.</li><li>Build and manage CI/CD pipelines; support DevOps practices including Terraform (a plus).</li><li>Utilize containerization with Docker for deployment and scaling.</li><li>Implement and maintain secure communication between services using RabbitMQ, Kafka, or equivalent messaging systems.</li><li>Apply strong understanding of SSO, OAuth, encryption, and secure authentication protocols.</li><li>Collaborate with cross-functional teams to ensure reliability, scalability, and performance.</li><li>Work within an Agile/Scrum environment and participate in team ceremonies.</li></ul>Required Skills &amp; Qualifications:<ul><li>Strong experience with Flask and FastAPI.</li><li>Proficiency in RDBMS (PostgreSQL preferred) and NoSQL technologies.</li><li>Solid foundation in TDD and clean code principles.</li><li>Experience with AWS ecosystem (EC2, Lambda, S3, SQS).</li><li>Working knowledge of ORMs and database migration tools.</li><li>Practical experience with Docker, RabbitMQ, distributed systems, and microservices.</li><li>Understanding of CI/CD, DevOps workflows, and optionally Terraform.</li><li>Familiarity with Big Data tools like Kafka, Spark, etc. is a strong plus.</li><li>Awareness of ElasticSearch, DynamoDB, and SOA architecture patterns.</li><li>Strong grasp of data security, SSO, and OAuth authentication.</li></ul>How to Apply:Interested candidates are encouraged to submit their resume and a cover letter outlining their relevant experience and qualifications to: jobs@q-sols.comPlease include &quot;Senior Python Developer Application&quot; in the subject line.Alternatively, you can apply directly by filling out this form: https://forms.gle/zudZy5oviDL2S14A8Note: This position is open only for candidates based in Karachi.Job Type: Full-timeApplication Question(s):<ul><li>What's your Current &amp; Expected Salary?</li></ul>Experience:<ul><li>FastAPI: 3 years (Required)</li><li>Python: 3 years (Required)</li></ul>Work Location: In person

Senior Python Developer

AutoScale Ventures

<div>Location: Remote (Pakistan)
Job Type: Full-time
Work Schedule: 09:00AM-05:00PM (Pacific Standard Time)
Role Overview:
We're looking for a Senior Python Developer to join our team. In this role, you'll play a key part in designing and maintaining our backend infrastructure, building high-quality data products, and solving complex problems using our vast automotive datasets. You'll work closely with fellow developers and stakeholders to drive technical projects from conception to deployment while contributing to the overall reliability, scalability, and performance of our systems.
Key Responsibilities:<ul><li>
Lead the design, development, and deployment of core backend systems and data products</li><li>
Build scalable, high-performance infrastructure to support data-heavy applications</li><li>
Optimize backend systems for maintainability, performance, and scalability</li><li>
Oversee and maintain production systems to ensure reliability, up-time, and data accuracy</li><li>
Proactively troubleshoot and resolve technical issues in live environments</li><li>
Develop and refine automated data scraping pipelines</li><li>
Leverage our proprietary datasets to solve industry-specific problems and deliver value to customers</li><li>
Work closely with developers, analysts, and stakeholders across the company</li><li>
Mentor junior developers, providing guidance on best practices, code quality, and career growth</li><li>
Maintain clear, up-to-date technical documentation for systems and processes</li><li>
Explore and prototype new ideas for data-driven web applications and business models</li></ul>
Requirements:<ul><li>
3+ years of experience in Python (preferably in a production environment), with a solid understanding of best practices for writing clean, maintainable code</li><li>
Hands-on experience with Python frameworks such as Flask, FastAPI, and optionally Scrapy for data scraping</li><li>
Strong working knowledge of Linux systems and SQL databases. Experience with distributed databases is a plus</li><li>
Experience with PostgreSQL or MySQL in production environments</li><li>
Experience designing, building, and supporting backend systems from scratch</li><li>
Comfortable managing and optimizing live production systems</li><li>
Familiarity with data scraping techniques and large-scale data processing</li><li>
Self-driven and highly productive with minimal supervision in a remote work environment</li><li>
Strong written and verbal communication skills, with the ability to work across time zones and collaborate with a global team</li><li>
A passion for solving problems creatively and exploring new data-driven business ideas</li></ul>
Nice to Have:<ul><li>
Familiarity with PHP is a plus, especially in hybrid environments involving LAMP/LEMP stacks</li><li>
Experience mentoring or working with junior developers</li><li>
Demonstrated initiative through personal or open-source projects</li></ul>
Benefits &amp; Perks:<ul><li>
Fully Remote Work Work from anywhere with a reliable internet connection</li><li>
Healthcare Coverage We provide health benefits for you and your family's well-being</li><li>
Leave Days, Vacation Time, and Paid Holidays Recharge and take the time you need</li><li>
Equipment Funds Get support to set up or upgrade your home office</li><li>
Profit Sharing Monthly and annual bonuses tied to company performance</li><li>
Long-Term Employment We value team members who grow with us</li><li>
Collaborative Team Culture Work with a supportive and globally distributed team</li></ul>
About Us:
AutoScale Ventures is a technology-driven company with 50+ team members across the Philippines, Pakistan, India, the U.S., China, and Canada. We operate a group of businesses spanning tech, data services, recruiting, and real estate, including:<ul><li>
VinAudit: Vehicle history and market data provider</li><li>
Proxy Services: High-speed private proxy solutions</li><li>
EliteWork: Remote workforce platform and SaaS productivity tool</li><li>
Voliplex: Long-term U.S. real estate investment firm</li></ul>
We're committed to building scalable, data-driven solutions and empowering a globally distributed team.
Important Note: Only those who are shortlisted will be contacted. We look forward to meeting the right person for this role!</div>

MS Global INC.

We&rsquo;re Hiring: Flutter DeveloperWe are looking for a skilled and passionate Flutter Developer to join our team. The ideal candidate will be responsible for developing high-quality cross-platform mobile applications using Flutter, ensuring smooth performance, and delivering exceptional user experiences.Key Responsibilities:Develop, test, and deploy mobile applications using Flutter (iOS &amp; Android).Collaborate with the design and backend teams to deliver scalable and high-performing apps.Write clean, maintainable, and efficient code.Integrate APIs and third-party libraries as required.Debug, troubleshoot, and resolve technical issues.Continuously research and implement the latest trends, tools, and best practices in mobile app development.Ensure timely delivery of assigned projects within deadlines.Requirements:Proven experience as a Flutter Developer (minimum 1&ndash;2 years preferred).Strong knowledge of Dart programming language.Experience with REST APIs, JSON, and third-party integrations.Familiarity with Git version control.Understanding of UI/UX principles and responsive design.Ability to work independently as well as in a collaborative team environment.Strong problem-solving skills and attention to detail.Benefits:Competitive salary package (PKR 60,000 &ndash; 80,000).Professional growth opportunities.Friendly and collaborative work environment.Exposure to diverse and challenging projects.Apply now at: msworldhr@gmail.comJob Types: Full-time, Part-timePay: From Rs60,000.00 per monthAbility to commute/relocate:<ul><li>Karachi: Reliably commute or planning to relocate before starting work (Required)</li></ul>Application Question(s):<ul><li>n: </li></ul>How many months of experience do you have working as a Flutter Developer?Work Location: Remote

SENIOR FLUTTER DEVELOPER

Explore 713+ Senior lead developer in Karachi this September. Find roles across top companies and apply now to boost your career.

713 senior lead developer jobs IN Karachi

Senior IOS Developer & Team Lead

Senior Backend Developer

Senior Blockchain Developer (Corda Specialist)

Mid-level Blockchain Developer (Corda Specialist)

Senior Python Developer

Senior Python Developer

SENIOR FLUTTER DEVELOPER