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backend software engineer (node.js / ruby on rails) Jobs in Karachi

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MarketCube.io

Full Stack Developer (Node.js / React / GraphQL)Location: Karachi, Pakistan (On-site)About the Role:Market Cube is looking for an experienced Full Stack Developer to join our growing engineering team in Karachi. This is a hands-on role where you'll design, build and maintain scalable applications across multiple products, working with modern technologies including Node.js, React, GraphQL and Shopify.You'll work closely with the product and engineering teams to deliver high-quality software, solve complex technical challenges, and help mentor other developers.Key Responsibilities<ul><li>Design, develop and maintain scalable backend services using Node.js.</li><li>Build modern, responsive web applications using React.</li><li>Develop and maintain REST and GraphQL APIs.</li><li>Build and support Shopify integrations using the GraphQL Admin API, Webhooks, App Bridge and Polaris.</li><li>Develop business-critical functionality, including commission calculations, order splitting and payout logic, ensuring accuracy and reliability.</li><li>Contribute to multiple products across the Market Cube portfolio as business priorities evolve.</li><li>Troubleshoot production issues, resolve bugs, optimise application performance and investigate data-related problems.</li><li>Participate in code reviews and promote engineering best practices.</li><li>Mentor and support mid-level software engineers.</li></ul>Essential Requirements<ul><li>Minimum 5 years' professional software development experience.</li><li>Strong commercial experience with Node.js and JavaScript/TypeScript.</li><li>Strong experience building applications with React.</li><li>Experience designing and optimising PostgreSQL or MySQL databases, including schema design, indexing and query optimisation.</li><li>Experience developing REST APIs, GraphQL APIs, webhooks and asynchronous processing/queues.</li><li>Experience working across multiple applications, codebases or products.</li><li>Ability to translate business requirements into technical solutions with minimal supervision.</li><li>Strong analytical, problem-solving and debugging skills.</li><li>Excellent communication skills and the ability to collaborate within a cross-functional team.</li></ul>Desirable Skills<ul><li>Shopify app development experience.</li><li>E-commerce or multi-tenant SaaS experience.</li><li>Experience with AWS.</li><li>Docker and containerised application development.</li><li>CI/CD pipelines and automated deployment practices.</li></ul>What We Offer<ul><li>Opportunity to work on multiple innovative products using modern technologies.</li><li>A collaborative, supportive and highly skilled engineering team.</li><li>Exposure to challenging technical projects and real business impact.</li><li>Career progression and professional development opportunities.</li></ul>LocationThis is a full-time, on-site position based in Karachi, Pakistan.How to ApplyPlease send the following to Ali.haider@marketcube.io:<ul><li>Your CV.</li><li>Your GitHub profile (or a portfolio of relevant work).</li></ul>Applications submitted without a GitHub profile or relevant portfolio may not be considered.Job Type: Full-timeExperience:<ul><li>React, Node Js, Full Stack Development: 4 years (Required)</li></ul>Work Location: In person

Full Stack Developer (Node.js / React / GraphQL)

Wärtsilä

<div>
 W&auml;rtsil&auml; is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we &ndash; W&auml;rtsilians - put our hearts and minds into turning W&auml;rtsil&auml;'s purpose of enabling sustainable societies through innovation in technology and services into reality. Our ultimate aim is to provide increased value to both our customers and society. New, game-changing ideas and continuous improvement have been part of our DNA since 1834. Together, we can create new business opportunities and more sustainable future that we can all be proud of.
 
 
 We want to transition the world towards a decarbonised and sustainable future. By pushing the boundaries of engineering and technology, we can make it work. We are always on the lookout for future-oriented talent &ndash; want to join the ride?
 
 
 
 We are looking for a skilled and reliable electrician to join our team.
 
 
 
 
 Main Responsibilities:
 
 
 
 <ul>
 <li>
 Assist shift / Electrical engineer for operation and maintenance.
 </li>
 <li>
 Utilize tools, equipment, and accessories in such a manner to maximize useful operating life.
 </li>
 <li>
 Read and interpret drawings, circuit diagrams and electrical code specifications to plan wiring layouts
 </li>
 <li>
 Assist the Shift / electrical Engineer to troubleshoot and isolate faults in electrical and electronic systems and remove and replace faulty parts.
 </li>
 <li>
 Carry out repair work in the workshop, motor windings, electrical equipment, and panels.
 </li>
 <li>
 Install, replace, and repair lighting fixtures and electrical control and distribution equipment, such as switches, relays, and circuit breaker panels.
 </li>
 <li>
 Follow all safety regulations
 </li>
 <li>
 Test completion of circuits using test equipment.
 </li>
 <li>
 Carry out any other job assigned to him from time to time
 
 
 </li>
 </ul>
 
 Job location :
 
 SNPC, Nooriabad, Pakistan
 
 
 
 Qualification &amp; experience requirement:
 
 Diploma Electrical with 3 years of relevant experience
 
 
 
 Other desired Skills:
 
 
 
 <ul>
 <li>
 Hands on maintenance experience of internal combustion engines (Must have)
 </li>
 <li>
 Familiarity with measuring instruments (Sub part of overhauling engines) (Added advantage)
 </li>
 <li>
 Good Cultural knowledge
 </li>
 <li>
 Communication skills
 </li>
 <li>
 Teamwork skills
 </li>
 <li>
 Quality, Health, Safety &amp; Environment Awareness
 </li>
 <li>
 Problem solving &amp; decision making
 
 
 </li>
 </ul>
 At W&auml;rtsil&auml; we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.
 
 
 Please note that according to W&auml;rtsil&auml; policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.
 
 
 
 This is W&auml;rtsil&auml;
 
 
 
 W&auml;rtsil&auml; is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com.
</div>

Electrician

RIKSOF (Private) Limited

RIKSOF is an award-winning agency building AI-enabled solutions for mobile, web and IoT projects.We are currently on the lookout for highly motivated QA &amp; Test Automation Engineer with 3 years of post-graduate experience. In this role, you should be able to work in a challenging environment with seniors.You should have excellent personal, organizational and problem-solving skills.Successful candidates will have the opportunity to work on high visibility and technically complex projects.<ul><li>Ensuring high quality in the software we build through the use of test automation.</li><li>Research and implementation of the latest trends and technologies in Agile development.</li><li>Programming of system and UI test cases.</li><li>Performance and Security Testing</li><li>Writing clear, concise and comprehensive test plans and test cases</li><li>Ensuring project deadlines are met</li></ul>Desired Languages: Javascript or TypescriptRequirements:<ul><li>Proven work experience in software quality assurance</li><li>Knowledge about puppeteer and jenkins.</li><li>Strong knowledge of software QA methodologies, tools and processes</li><li>BS/MS degree in Computer Science</li></ul>Compensation &amp; Benefits<ul><li>Fuel allowance.</li><li>18 annual holidays.</li><li>Employee Old-Age Benefit (EOBI).</li><li>Casual, friendly environment.</li></ul>Pay: Up to Rs100,000.00 per monthWork Location: In person

QA & Test Automation Engineer

Conductivity Careers and HR Solutions

Location: DHA Phase 1, KarachiAY Capital is looking for a motivated Sales &amp; Application Engineer to join our growing team. This role is ideal for fresh graduates or professionals with up to 2 years of experience who are eager to build a career in technical sales and customer solutions.Key Responsibilities<ul><li>Identify and develop new business opportunities.</li><li>Respond to customer inquiries and recommend suitable technical solutions.</li><li>Prepare quotations, technical proposals, and commercial documentation.</li><li>Maintain accurate customer records, quotations, and sales reports using Microsoft Excel.</li><li>Create and update Excel sheets for sales tracking, pricing, inventory, and reporting.</li><li>Coordinate with suppliers and internal teams to ensure timely order execution.</li><li>Build and maintain strong relationships with clients.</li><li>Conduct product presentations and provide technical support when required.</li><li>Meet assigned sales targets and prepare regular progress reports.</li></ul>Requirements<ul><li>Bachelor's degree in Electrical or Electronics Engineering.</li><li>Fresh graduates or candidates with up to 2 years of experience.</li><li>Strong command of Microsoft Excel (formulas, filters, Pivot Tables, VLOOKUP/XLOOKUP, data management, and reporting).</li><li>Proficiency in MS Office.</li><li>Good communication and interpersonal skills.</li><li>Strong analytical and problem-solving abilities.</li><li>Willingness to learn and grow in a technical sales environment.</li></ul>What We Offer<ul><li>Competitive salary package.</li><li>Professional learning and career growth opportunities.</li><li>Supportive and collaborative work environment.</li><li>Hands-on exposure to industrial and engineering solutions.</li></ul>Apply at: info@aycapital.com.pkPay: Rs40,000.00 - Rs60,000.00 per monthWork Location: In person

Sales and Application Engineer

Mind's Eye Consultancy

Job SummaryWe are seeking a motivated and technically inclined Trainee Automation Sales Engineer to join our Industrial Automation Sales team. The selected candidate will receive hands-on training in industrial automation products, technical sales, customer relationship management, and business development. This role is ideal for fresh engineering graduates who are passionate about industrial technology and aspire to build a career in technical sales.Key Responsibilities<ul><li>Learn the company's automation products, solutions, and services.</li><li>Assist the Sales Engineers in identifying and developing new business opportunities.</li><li>Visit customers to understand their automation requirements under the guidance of senior engineers.</li><li>Prepare technical and commercial quotations.</li><li>Support proposal preparation, tender documentation, and bid submissions.</li><li>Coordinate with suppliers and principals for technical specifications and pricing.</li><li>Conduct product presentations and demonstrations for customers.</li><li>Maintain regular follow-up with prospective clients.</li><li>Build and maintain strong relationships with customers.</li><li>Coordinate with the Engineering and Projects teams for solution development.</li><li>Maintain accurate customer records and update the CRM system.</li><li>Monitor market trends, competitor activities, and customer requirements.</li><li>Participate in exhibitions, seminars, technical workshops, and customer events.</li><li>Achieve assigned sales targets and KPIs after the training period.</li><li>Prepare weekly sales activity reports and submit them to the reporting manager.</li><li>Ensure compliance with company policies and professional ethics.</li></ul>Products &amp; SolutionsThe trainee will receive training on one or more of the following:<ul><li>PLC (Programmable Logic Controllers)</li><li>HMI (Human Machine Interface)</li><li>SCADA Systems</li><li>Variable Frequency Drives (VFDs)</li><li>Servo Drives &amp; Motion Control</li><li>Industrial Sensors</li><li>Instrumentation</li><li>Industrial Networking</li><li>Control Panels (MCC, PCC, PLC Panels)</li><li>Energy Management Solutions</li><li>Industrial IoT (IIoT)</li><li>Industrial Automation Software</li></ul>Qualifications<ul><li>Bachelor's Degree in Electrical Engineering, Electronics Engineering, Mechatronics Engineering, Automation Engineering, or a related discipline.</li><li>Fresh graduates are encouraged to apply.</li><li>Candidates with up to 1 year of relevant experience may also be considered.</li></ul>Required SkillsTechnical Skills<ul><li>Basic understanding of PLC, HMI, SCADA, and industrial automation concepts.</li><li>Knowledge of electrical control systems and industrial instrumentation.</li><li>Ability to interpret electrical drawings and technical documents.</li><li>Proficiency in Microsoft Office applications.</li><li>Familiarity with AutoCAD or EPLAN will be an advantage.</li></ul>Work Location: In person

Trainee Automation Sales Engineer

Echotech

Job Title: Product / Interior Designer (Acoustic Products)Company: Echotech Ltd. | www.echotech.ltdLocation: Karachi, PakistanJob Type: Full-timeExperience Required: 1&ndash;2 YearsAbout Echotech Ltd.Echotech is a specialized acoustic product manufacturer and consultancy brand. We engineer and produce high-performance architectural sound treatments&mdash;including PET acoustic panels, custom baffles, and diffusers&mdash;that optimize the acoustics of commercial, educational, and residential environments.Role Overview:We are looking for a versatile designer with a foundational background in product or furniture design to apply their technical detailing skills to the acoustic manufacturing space. You will manage client requirements from the initial brief to the final quotation. In addition to technical drafting and cost estimation, this role requires proactive sales outreach&mdash;connecting directly with architects and industry professionals to pitch Echotech&rsquo;s products and secure new projects.Key Responsibilities:<ul><li>Client Consultation: Meet with clients to understand their space dimensions, aesthetic preferences, and acoustic requirements.</li><li>Technical Drafting: Create precise shop drawings, product detailing, and 2D/3D layouts (using AutoCAD and SketchUp) for manufacturing and client approval.</li><li>Costing &amp; Quotations: Accurately calculate material requirements, labor, and production costs to generate competitive client quotations.</li><li>Architectural Sales &amp; Outreach: Proactively identify and reach out to external architects, consultants, and contractors to showcase Echotech&rsquo;s acoustic products and drive B2B sales.</li><li>Project Coordination: Ensure product design specifications align seamlessly with factory manufacturing capabilities and client timelines.</li></ul>Requirements:<ul><li>Experience: 1 to 2 years of professional experience in product design or furniture design (we value the strong technical detailing and manufacturing knowledge this background provides).</li><li>Technical Skills: Strong proficiency in drafting and 3D modeling software (AutoCAD and SketchUp are required).</li><li>Commercial Awareness: Solid numerical skills with the ability to calculate material yields, estimate costs, and draft professional business quotations.</li><li>Communication &amp; Sales: Excellent verbal and written communication skills, with the confidence to actively pitch products to architects and negotiate deals.</li><li>Self-Starter: Highly motivated with a proactive approach to sales, outreach, and business development.</li></ul>What We OfferOpportunity to work in a specialized, growing niche of architectural acoustics.A collaborative environment bridging technical design and manufacturing.Market comparative salary.Experience:<ul><li>2year: 1 year (Required)</li></ul>Work Location: In person

Product / Interior Designer (Acoustic Products)

Siemens Energy

<div>A Snapshot of Your Day
As a Technical Associate &ndash; Software Engineer, you will be part of the Digital Transformation team, contributing to the development and enhancement of digital solutions that support project execution and business operations. Working alongside experienced software engineers, business analysts, and process experts, you will help design, develop, and maintain applications that improve project management, resource planning, procurement, logistics, engineering progress tracking, quality management, and EHS processes.
This role offers an excellent opportunity for recent graduates and early-career professionals to gain hands-on experience with enterprise application development, digital transformation initiatives, and modern software engineering practices within a global organization.
How You'll Make an Impact<ul>
<li>Develop and enhance business applications supporting project execution, resource planning, procurement, logistics, engineering, quality management, and EHS processes.
</li><li>Collaborate with business stakeholders to understand functional requirements and translate them into effective technical solutions.
</li><li>Participate in the design, development, testing, deployment, and maintenance of enterprise applications.
</li><li>Support the automation and digitalization of business processes to improve operational efficiency.
</li><li>Develop dashboards, reports, and data-driven solutions that support business decision-making.
</li><li>Participate in system integrations with enterprise platforms, databases, APIs, and external services.
</li><li>Troubleshoot, maintain, and optimize existing applications to improve reliability, performance, and scalability.
</li><li>Work within Agile development teams while adopting software engineering best practices.
</li><li>Collaborate with global teams on digital transformation initiatives and innovative technology solutions.
</li></ul>What You Bring
Education<ul>
<li>Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field.
</li></ul>Experience<ul>
<li>0&ndash;1 year of professional experience in software development.
</li><li>Internship, academic project, or personal project experience is highly welcomed.
</li><li>Exposure to enterprise application development or business process automation is an advantage.
</li></ul>Technical Skills<ul>
<li>Proficiency in at least one programming language such as Java, JavaScript, Python, C#, or a similar language.
</li><li>Knowledge of AI agents, intelligent automation, or system automation concepts is considered an advantage.
</li><li>Good understanding of software development fundamentals, including object-oriented programming (OOP), data structures, algorithms, and problem-solving techniques.
</li><li>Basic knowledge of SQL and relational databases.
</li><li>Familiarity with HTML, CSS, and JavaScript.
</li><li>Exposure to REST APIs, Git/GitHub, and version control tools.
</li><li>Basic understanding of cloud technologies is an advantage.
</li><li>Interest in digital transformation technologies and enterprise software development.
</li></ul>Soft Skills<ul>
<li>Strong analytical and problem-solving skills.
</li><li>Eagerness to learn new technologies and development frameworks.
</li><li>Excellent communication and teamwork abilities.
</li><li>Ability to work effectively in Agile and cross-functional environments.
</li><li>Strong attention to detail.
</li><li>Self-motivated with a proactive learning mindset.
</li><li>Adaptability in a dynamic and international environment.
</li><li>Strong sense of ownership and accountability.</li>
</ul>
Who is Siemens Energy?
At Siemens Energy, we are more than just an energy technology company. We meet the growing energy demand across 90+ countries while ensuring our climate is protected. With more than 92,000 dedicated employees, we not only generate electricity for over 16% of the global community, but we&rsquo;re also using our technology to help protect people and the environment.
Our global team is committed to making sustainable, reliable, and affordable energy a reality by pushing the boundaries of what is possible. We uphold a 150-year legacy of innovation that encourages our search for people who will support our focus on decarbonization, new technologies, and energy transformation.
Our Commitment to Diversity
Lucky for us, we are not all the same. Through diversity we generate power. We run on inclusion and our combined creative energy is fueled by over 130 nationalities. Siemens Energy celebrates character &ndash; no matter what ethnic background, gender, age, religion, identity, or disability. We energize society, all of society, and we do not discriminate based on our differences.
Rewards<ul><li>
Working with a global team</li><li>
Opportunities to work on and lead a variety of innovative projects</li><li>
Possibility to take over further tasks within the company</li><li>
Supportive work culture</li><li>
Medical benefits
</li><li>Remote/Flexible work</li><li>
Time off/Paid holidays</li><li>
Parental leave</li><li>
Continual learning through the Learn@Siemens-Energy platform</li></ul><ul>
<li>e-Learning</li>
<li>Mentorship</li>
<li>Coaching</li>
<li> Open feedback culture</li></ul></div>

Technical Associate Software Engineer

Explore 7+ Backend engineer in Karachi this August. Find roles across top companies and apply now to boost your career.