Backend developer

Opera Software is looking for a Backend Developer to join the growing Opera Payments Engineering Team located in Gothenburg, Sweden.The ideal candidate should be able to work effectively with other developers, project leaders, and quality assurance engineers to solve complex issues and build and maintain a scalable, highly available, secure, and robust system.Opera Payments Platform (OPay) enables users to pay for various services through their mobile or web browser. It provides fast, easy, and secure payments and money transfers. Our key markets are emerging economies in Africa, Asia, and South America, where Opera has a traditionally strong presence and user base.At Opera Software, we develop superior products and services for our users around the world through state-of-the-art technology, innovation, leadership, and partnerships. Our product portfolio includes web browsers, payment solutions, news aggregation services, data compression, and privacy. Our products enable more than 350 million internet consumers to discover and connect with the content and services that matter most to them, regardless of the device, network, or location.ResponsibilitiesCollaborate with an autonomous team of developers, designers, testers and product owners to find end-to-end solutions to important problemsBuild and maintain the payment solutions which could be used by millions of users in AfricaBe involved in architectural and design discussions, building toward an efficient, extensible, and secure payment systemImprove test coverage and quality of the productsRequirementsB.Sc. or M.Sc. in Computer Science or equivalent experienceStrong knowledge of object-oriented programming languages, paradigms, constructs, and idiomsStrong knowledge of web architecture and distributed systemsStrong knowledge of application architecture and design patternsStrong knowledge of concurrent programming and thread handlingCare about quality and understand what it means to ship high-quality codeUnderstand how to write scalable, robust, testable, efficient, performant, and easily maintainable codeExperience with code versioning tools such as GitExperience with NoSQL databasesExperience with Agile work processesSelf-motivated, structured, and able to take initiative as well as being creative and curiousAutonomous working style, with eagerness to improve systems, processes, and yourselfFluency in English, both written and spoken, and good communication skillsIdeal job requirementsKnowledge of Go programming language, paradigms, constructs, idioms, framework, and tools:Goroutine and channel patternsGo’s templating languagePopular Go web frameworks, such as GinAbility to write clean and effective Godoc commentsWriting unit and functional testsKnowledge of web technologies such as HTML, CSS, and JavaScriptKnowledge of web securityKnowledge of continuous integration/deliveryWe're looking forward to receive your application!