backend developer

Japan Digital Mail Services.

Backend Developer (Messaging Systems) &ndash; Email Infrastructure &amp; Cloud MessagingAbout the RoleWe are seeking a talented Backend Developer (Messaging Systems) to help build and scale next-generation email and messaging infrastructure at Japan Digital Mail Services.If you enjoy working on high-performance distributed systems, email delivery pipelines, and cloud-based messaging platforms, this is a chance to work on systems that handle millions of messages reliably and securely every day.You will join a fast-moving engineering team focused on scalability, uptime, and performance optimization in a modern cloud environment.What You&rsquo;ll Do<ul><li>Design, develop, and maintain backend systems for email and messaging delivery</li><li>Build scalable APIs and microservices for messaging infrastructure</li><li>Optimize system performance, latency, and throughput</li><li>Work with distributed systems, queues, and event-driven architecture</li><li>Ensure high reliability, security, and deliverability of email systems</li><li>Collaborate with DevOps and frontend teams to improve platform performance</li><li>Troubleshoot production issues and implement long-term fixes</li><li>Contribute to architecture decisions and system design discussions</li></ul>What We&rsquo;re Looking For<ul><li>Strong experience in backend development (Java, Go, Python, or Node.js)</li><li>Experience with messaging systems (SMTP, Kafka, RabbitMQ, or similar)</li><li>Knowledge of distributed systems and cloud architecture</li><li>Experience with APIs, microservices, and RESTful services</li><li>Understanding of databases (SQL and/or NoSQL)</li><li>Problem-solving mindset and strong debugging skills</li><li>Ability to work in a collaborative engineering environment</li></ul>Nice to have:<ul><li>Experience with email delivery systems or SaaS platforms</li><li>Cloud experience (AWS, Azure, or GCP)</li><li>Knowledge of system observability tools (Prometheus, Grafana, ELK)</li></ul>Why Join UsAt Japan Digital Mail Services, we focus on building reliable, scalable messaging systems that power global communication. You&rsquo;ll work in an engineering-driven culture where your ideas directly impact system architecture and product performance.We value clean engineering practices, autonomy, and continuous learning.Apply NowIf you&rsquo;re excited about building scalable messaging systems and working on complex backend challenges, we&rsquo;d love to hear from you. Apply today and join our growing engineering team.Pay: QAR18,000.00 - QAR32,000.00 per monthWork Location: In person

Backend Developer (Messaging Systems)

Human Capital Group

Key Responsibilities<ul><li>Design, develop, test, deploy, maintain, and enhance robust, scalable backend applications.</li><li>Architect and implement high-performance APIs for our platform.</li><li>Identify and resolve code inefficiencies, proposing effective technical solutions.</li><li>Participate in technology evaluations and rapid prototyping of new concepts.</li><li>Build maintainable, scalable, and performant systems following best practices in security and design.</li><li>Troubleshoot and resolve application issues to ensure a seamless client experience.</li><li>Collaborate closely with team members in an agile environment, fostering a culture of learning and innovation.</li><li>Manage server and database infrastructure to ensure optimal performance and reliability.</li><li>Take full ownership of projects from concept to deployment.</li></ul>Qualifications<ul><li>Bachelor&rsquo;s degree in Computer Science or equivalent practical experience.</li><li>7+ years of backend development experience.</li><li>Strong proficiency in PHP (preferred) or other backend languages such as Python, Ruby, Java, or .NET.</li><li>Solid understanding of relational databases (MySQL or similar).</li><li>Experience with AWS services such as EC2, S3, RDS, Aurora is a strong advantage.</li><li>Proven experience designing and developing APIs.</li><li>Excellent verbal and written communication skills.</li><li>Strong problem-solving abilities and attention to detail.</li><li>Passion for innovation and contributing to a dynamic engineering culture.</li></ul>Job Types: Full-time, PermanentPay: QAR8,000.00 - QAR12,000.00 per monthWork Location: In person

Senior Backend Developer

Key Responsibilities<ul><li>Lead and mentor a team of backend developers, fostering collaboration and continuous improvement.</li><li>Design, develop, test, deploy, and maintain scalable backend services and APIs.</li><li>Architect and implement high-performance, secure APIs for our payment platform.</li><li>Drive technical decision-making, code quality standards, and best practices across the team.</li><li>Conduct code reviews and ensure adherence to architecture, security, and performance guidelines.</li><li>Collaborate with product and engineering teams to translate business requirements into scalable technical solutions.</li><li>Identify technical risks and propose solutions to improve performance, reliability, and scalability.</li><li>Oversee system architecture and contribute to long-term technical strategy.</li><li>Manage and optimize server and database infrastructure for high availability and performance.</li><li>Troubleshoot complex production issues and guide the team in efficient resolution.</li><li>Lead technical planning, sprint execution, and delivery within an agile environment.</li></ul>Qualifications<ul><li>Bachelor&rsquo;s degree in Computer Science or equivalent practical experience.</li><li>8+ years of backend development experience, including 2+ years in a technical leadership or team lead role.</li><li>Strong proficiency in PHP (preferred) or backend languages such as Python, Ruby, Java, or .NET.</li><li>Solid experience with relational databases (MySQL or similar).</li><li>Strong background in designing RESTful APIs and scalable backend architectures.</li><li>Hands-on experience with AWS services (EC2, S3, RDS, Aurora).</li><li>Proven ability to lead teams and manage technical delivery.</li><li>Excellent problem-solving skills and attention to detail.</li><li>Strong communication and collaboration abilities.</li></ul>Job Types: Full-time, PermanentPay: QAR9,000.00 - QAR14,000.00 per monthWork Location: In person

Team Lead Backend Developer

Karami Companies Management

Full Stack DeveloperWe are looking for a skilled Full Stack Developer to design, develop, and maintain scalable web applications across frontend and backend. The ideal candidate will ensure high performance, robust security, and seamless integration with cloud services.Key Responsibilities<ul><li>Develop and maintain web and mobile applications using React or Flutter</li><li>Build backend services with Node.js and Express</li><li>Design, implement, and maintain REST APIs</li><li>Work with databases such as MongoDB, Firestore, or Cloud SQL</li><li>Collaborate on system architecture and scalable solutions</li><li>Implement state management using Redux or similar tools</li><li>Ensure application performance, security, and reliability</li><li>Integrate applications with cloud platforms (e.g., GCP)</li><li>Collaborate with team members using Git for version control</li><li>Optionally, work with Laravel or Python for backend services</li><li>Implement gRPC for efficient service-to-service communication</li></ul>Required Skills &amp; Qualifications<ul><li>Strong experience in frontend frameworks: React or Flutter</li><li>Proficient in Node.js and Express</li><li>Knowledge of REST APIs and gRPC</li><li>Experience with databases: MongoDB, Firestore, or Cloud SQL</li><li>Familiarity with state management (Redux or equivalent)</li><li>Basic understanding of system architecture and scalable solutions</li><li>Experience with cloud services (GCP preferred)</li><li>Version control using Git</li><li>Knowledge of Laravel or Python is a plus</li></ul>Job Types: Full-time, PermanentApplication Question(s):<ul><li>Please provide your portfolio link or GitHub profile:</li><li>Do you have experience in full stack development?</li><li>Have you worked with React or Flutter?</li><li>Have you worked with Node.js / Express?</li><li>Have you worked with Python / Django / Flask?</li><li>Have you worked with Laravel?</li><li>Have you worked with MongoDB/Firestore/Cloud SQL?</li><li> Have you worked with REST APIs?</li><li>Have you worked with gRPC?</li><li>Do you have experience with cloud platforms (e.g., GCP, AWS)?</li><li>Are you proficient with Git?</li><li>Have you used Redux or similar state management libraries?</li></ul>Work Location: In person

Full Stack Developer

PROZ TECHNOLOGIES

Hello, Greetings from Proztec Qatar! I hope everything is going well with you.JOB DESCRIPTIONThe Backend Engineer (CRM Dynamics) is responsible for developing, customizing, and integrating backend solutions within Microsoft Dynamics 365 CRM. The role focuses on building scalable and efficient business logic, ensuring seamless system integrations, and enhancing overall CRM functionality. The engineer will work closely with front-end developers, functional consultants, and stakeholders to deliver robust and high-performing solutions aligned with business needs.DUTIES &amp; RESPONSIBILITIES<ul><li>Develop and customize backend solutions for Microsoft Dynamics 365 CRM</li><li>Design and implement business logic using .NET technologies</li><li>Work with Dynamics SDK to extend and enhance CRM functionalities</li><li>Develop and maintain integrations with external systems and APIs</li><li>Write efficient queries, stored procedures, and optimize performance using SQL Server</li><li>Troubleshoot and resolve backend and integration issues</li><li>Collaborate with cross-functional teams for end-to-end solution delivery</li><li>Ensure code quality through best practices, testing, and documentation</li><li>Support deployment, upgrades, and maintenance of CRM applications</li><li>Stay updated with the latest Dynamics 365 and Microsoft technologies</li></ul>SKILLS &amp; ABILITIES<ul><li>Strong experience in .NET (C#, ASP.NET)</li><li>Hands-on experience with Microsoft Dynamics 365 CRM and Dynamics SDK</li><li>Solid knowledge of SQL Server (queries, stored procedures, optimization)</li><li>Experience in API development and system integrations</li><li>Strong problem-solving and debugging skills</li><li>Good understanding of CRM architecture and customization</li></ul>POTENTIAL BACKGROUND<ul><li>Minimum 4+ years of experience in Backend Development</li><li>Experience working with Microsoft Dynamics 365 CRM</li><li>Exposure to enterprise-level CRM implementations</li><li>Experience in integrations and middleware solutions is a plus</li></ul>CERTIFICATIONS (MANDATORY/PREFERRED)<ul><li>Microsoft Certified: Dynamics 365 Developer Associate &ndash; Preferred</li></ul>LANGUAGE REQUIREMENT<ul><li>Arabic or Non-Arabic Speaker</li></ul>WORK LOCATION<ul><li>Onshore &amp; Offshore</li></ul>SOFT SKILLS<ul><li>Strong analytical and problem-solving abilities</li><li>Effective communication and collaboration skills</li><li>Ability to work in a fast-paced environment</li><li>High ownership and accountability</li><li>Detail-oriented with a focus on quality delivery</li></ul>If you&rsquo;re interested or have relevant experience, feel free to share your updated CV.Job Type: Full-timePay: QAR15,000.00 - QAR17,000.00 per monthWork Location: In person

BE Engineer (CRM Dynamics)

ThreeU

About the RoleWe&rsquo;re looking for a Senior Fullstack Developer with a strong backend focus who can build scalable systems end-to-end and isn&rsquo;t afraid to go beyond traditional engineering.This role is ideal for an all-rounder builder &mdash; someone who can design robust backend architectures, ship fullstack features, and is excited about the next wave of software: AI-native and agent-driven systems.What You&rsquo;ll Do<ul><li>Design and build scalable backend systems, APIs, and services</li><li>Develop fullstack features (backend-first, frontend when needed)</li><li>Own projects end-to-end: architecture &rarr; implementation &rarr; deployment &rarr; monitoring</li><li>Integrate and build with AI systems (LLMs, APIs, workflows)</li><li>Design and implement agentic workflows and automations</li><li>Optimize performance, reliability, and security across the stack</li><li>Collaborate with product and design to turn ideas into production systems</li><li>Contribute to technical strategy and system design decisions</li><li>Mentor and support other engineers</li></ul>What We&rsquo;re Looking ForCore Requirements<ul><li>5+ years experience as a fullstack or backend-focused engineer</li><li>Strong backend expertise (Node.js, Python, Go, or similar)</li><li>Experience building scalable APIs (REST / GraphQL)</li><li>Solid understanding of databases (SQL + NoSQL)</li><li>Experience with cloud infrastructure (AWS, GCP, etc.)</li><li>Strong fundamentals in system design, scalability, and performance</li></ul>Frontend (Working Knowledge)<ul><li>Experience with modern frameworks (React preferred)</li><li>Ability to build functional, clean UI when needed</li></ul>AI &amp; Next-Gen Skills (Strong Plus)<ul><li>Experience with LLM integrations (OpenAI, Anthropic, etc.)</li><li>Understanding of prompt engineering and evaluation</li><li>Experience building or experimenting with agentic AI systems</li><li>Familiarity with:</li><li>AI workflows / tool use</li><li>Retrieval (RAG), embeddings, vector DBs</li><li>Automation pipelines powered by AI</li><li>Ability to think in terms of AI-first product design, not just APIs</li></ul>Nice to Have<ul><li>Microservices architecture experience</li><li>CI/CD and DevOps familiarity</li><li>Multi-tenant or SaaS platform experience</li><li>Startup or high-growth environment background</li></ul>What We Offer<ul><li>Work on a modern, AI-first platform</li><li>High ownership and autonomy</li><li>Fast execution, minimal bureaucracy</li><li>Competitive compensation</li><li>Growth into tech leadership / AI architecture roles</li></ul>Who This Role Is Perfect ForSomeone who:<ul><li>Thinks like a builder and systems designer</li><li>Is backend-strong but not boxed in</li><li>Is curious about and actively exploring AI + agents</li><li>Wants to work on what&rsquo;s next, not just maintain what exists</li></ul>Job Type: Full-timePay: QAR4,000.00 - QAR8,000.00 per monthWork Location: In person

Senior Fullstack Developer (Backend-Focused, All-Rounder)

M.C CONFIG INFORMÁTICA

About the Role:Doha is rapidly becoming a hub for digital innovation, and at MC Config Technologies W.L.L., we are building software solutions that power modern businesses across the region. We focus on creating scalable, high-performance systems that are both reliable and user-focused.We are looking for a Senior Software Developer who can take ownership of complex technical projects and help shape the architecture of our applications. This is more than just coding&mdash;you will play a key role in technical decision-making, system design, and mentoring developers. You will collaborate closely with cross-functional teams to turn business requirements into efficient, scalable software solutions.Why Work With Us?The Environment: Our office in Doha&rsquo;s Industrial Area offers a professional and collaborative setting where innovation and teamwork are encouraged. We provide a structured yet flexible environment designed for productivity and growth.Technical Ownership: You won&rsquo;t just follow specifications&mdash;you will influence architecture, tools, and best practices. Your expertise will directly shape our products.Modern Stack: We work with technologies such as Java, Python, Node.js, cloud platforms (AWS/Azure), and modern DevOps practices.Growth: We support continuous learning, skill development, and career progression into leadership or specialized technical roles.Key Responsibilities:System Design &amp; Development: Design, develop, and maintain scalable backend and full-stack applications using modern programming languages and frameworks.Architecture &amp; Performance: Build efficient, high-performance systems and optimize applications for speed, scalability, and reliability.Code Quality: Write clean, maintainable, and well-documented code while following industry best practices and standards.Team Collaboration: Work closely with developers, QA engineers, and project managers to deliver high-quality software solutions.Mentorship: Guide junior developers, conduct code reviews, and contribute to team knowledge sharing.Problem Solving: Identify technical challenges early and provide effective solutions to ensure project success.What We Are Looking For:Experience: 5+ years of professional experience in software development, preferably in backend or full-stack roles.Technical Skills: Strong knowledge of Java, Python, or Node.js, along with experience in RESTful APIs and microservices architecture.Database Knowledge: Hands-on experience with relational or NoSQL databases such as MySQL, PostgreSQL, or MongoDB.Cloud &amp; Tools: Familiarity with cloud platforms (AWS, Azure, or GCP), Git, and modern development workflows.Mindset: You are solution-oriented, detail-focused, and able to balance quality with delivery timelines.Pay: QAR25,000.00 - QAR30,000.00 per monthWork Location: Hybrid remote in Doha (Doha)

MC Config Technologies W.L.L.

Explore 67+ Backend developer in Doha this May. Find roles across top companies and apply now to boost your career.