Senior Backend Engineer - Checkout

Salla

Job Overview

Location

Remote

Employment Type

Full-time

Work Arrangement

Remote

Sector

Information Technology & Software

Experience Level

Senior (5-8 years)

Application Deadline

July 31, 2026

About the Company

Salla is a prominent e-commerce platform dedicated to empowering businesses with robust online retail solutions. The company specializes in developing sophisticated backend systems that drive critical payment experiences, seamless checkout flows, and dynamic promotional strategies. Salla's engineering team focuses on Fintech innovations, ensuring secure and efficient financial transactions for its users. They are committed to building highly available and scalable systems that support millions of transactions, fostering loyalty programs, and optimizing pricing structures. Salla values modern development practices and leverages advanced technologies, including AI, to enhance productivity, software quality, and delivery speed, ultimately providing a superior e-commerce ecosystem.

Job Description

Salla is seeking a highly skilled Senior Backend Engineer to join our dynamic engineering team. This role focuses on critical areas such as Fintech, Checkout, and Promotions, where you will be instrumental in designing, building, and scaling robust backend systems.

You will be responsible for powering mission-critical payment experiences, optimizing checkout flows, and developing sophisticated solutions for promotions, loyalty programs, pricing, and various financial services. This position is ideal for engineers who thrive on solving complex distributed systems challenges and building high-performance services that operate reliably at scale.

Working collaboratively with Product, Design, Data, and other Engineering teams, you will deliver resilient, observable, and maintainable systems. Your contributions will directly impact millions of transactions, ensuring seamless and efficient operations. We are looking for engineers with strong software engineering fundamentals who are eager to embrace modern development practices, including leveraging AI to enhance productivity, software quality, testing, debugging, and overall delivery speed.

To apply for this role, click the Apply button on this page and follow the instructions.

Required Skills

Backend DevelopmentPHPGoJavaC#LaravelDistributed SystemsRESTful APIsSQLMySQLPostgreSQLCaching TechnologiesQueuesBackground WorkersPerformance OptimizationAutomated TestingCode ReviewsCI/CDAI-assisted Development ToolsFintech SystemsPayment SystemsCheckout SystemsLoyalty SystemsPromotions SystemsEvent-driven ArchitecturesDistributed Messaging SystemsDockerKubernetesAWSGCPAzureInfrastructure as CodeObservability PlatformsDistributed TracingMetricsProduction MonitoringMicroservicesService-Oriented Architectures

Key Responsibilities

Design, build, and operate scalable backend services supporting Fintech, Checkout, Promotions, Loyalty, and Payment systems.
Develop clean, maintainable, and high-performance production code with readability and long-term ownership in mind.
Design and evolve RESTful APIs and integrations with internal platforms, payment gateways, and third-party services.
Build reliable distributed systems capable of handling high traffic, failures, and asynchronous workloads.
Drive architectural decisions with scalability, resilience, maintainability, and operational excellence in mind.
Optimize application performance across services, databases, caching layers, queues, and background workers.
Participate in architecture discussions, technical design reviews, RFCs, and engineering planning.
Ensure services are production-ready through monitoring, logging, alerting, testing, and observability best practices.
Write comprehensive unit and integration tests while maintaining high engineering standards through code reviews.
Leverage AI-assisted engineering tools responsibly to accelerate development, debugging, testing, documentation, and code quality.
Mentor junior and mid-level engineers through technical leadership, design discussions, and engineering best practices.
Contribute throughout the full software development lifecycle, from design through deployment and production support.
Continuously improve system reliability, developer experience, and engineering standards across the team.

Qualifications

6+ years of professional software engineering experience building production backend systems.
Strong experience building scalable backend services in at least one modern language such as PHP, Go, Java, or C#.
Experience with PHP and Laravel is preferred but not required.
Strong understanding of distributed systems fundamentals, including consistency, availability, concurrency, fault tolerance, idempotency, asynchronous processing, messaging, and caching.
Experience designing and operating high-scale, highly available backend systems.
Proven ability to write clean, maintainable, efficient, and high-performance production code.
Strong understanding of software engineering principles, including SOLID, design patterns, clean architecture, and domain-driven design concepts.
Experience designing RESTful APIs and integrating with third-party platforms and payment providers.
Strong SQL knowledge with experience designing and optimizing MySQL or PostgreSQL databases.
Experience with caching technologies, queues, background workers, and performance optimization.
Experience writing automated tests, participating in code reviews, and working within modern CI/CD pipelines.
Comfortable using AI-assisted development tools to improve productivity, software design, implementation, testing, debugging, documentation, and code reviews.
Preferred: Experience building Fintech, Payments, Checkout, Loyalty, Pricing, Promotions, or other high-volume transactional systems.
Preferred: Experience with event-driven architectures and distributed messaging systems.
Preferred: Experience with Docker, Kubernetes, cloud platforms (AWS, GCP, or Azure), and Infrastructure as Code.
Preferred: Experience with observability platforms, distributed tracing, metrics, and production monitoring.
Preferred: Experience working within microservices or service-oriented architectures.
Preferred: Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field is a plus.

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The e-commerce sector in Saudi Arabia is experiencing rapid growth, driven by digital transformation and increasing online consumer adoption. This Senior Backend Engineer role is pivotal in architecting and scaling mission-critical payment experiences, checkout flows, and financial services. You will leverage expertise in distributed systems, RESTful APIs, and database optimization to ensure high availability and performance. The impact extends to enhancing customer loyalty and driving transaction volume through robust promotion and pricing engines. This position demands a strategic approach to backend architecture, directly influencing the platform's scalability and market leadership.