API testing Jobs

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API testing
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📍 United States of America

💸 111000.0 - 231250.0 USD per year

🔍 Software Development

🏢 Company: careers

  • MS in Computer Science or related field with strong understanding of the fundamentals including Data Structures, Algorithms
  • Experience in algorithm design and ML/AI
  • 4+ years of experience working with languages such as Java or Python
  • Familiarity with data mining, text processing and classification algorithms
  • Demonstrated problem solving skills and taking initiatives
  • Great communication skills, joy in helping people, ability to remain friendly and constructive under stress
  • 2+ experience working with Applied ML
  • Research and develop innovative algorithms for information retrieval, processing and ranking.
  • Build, enhance, optimize and deploy tools, workflows, systems to process Yahoo mail data for extraction relevant information.
  • Be responsible for improving information extraction using machine learning and natural language processing techniques.
  • Participate in agile development to add incremental value to the business.
  • Collaborate with Research scientists to build M/L models for classification, extraction and recommendations in automated fashion.

PythonSQLAgileApache HadoopApache HbaseData MiningElasticSearchImage ProcessingJavaMachine LearningMLFlowNLTKNumpyPyTorchSCRUMAlgorithmsAPI testingData engineeringData scienceData StructuresREST APIPandasSparkTensorflowCommunication SkillsRESTful APIsExcellent communication skillsJSONData modeling

Posted 34 minutes ago
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🔥 Test Analyst
Posted 35 minutes ago

📍 Netherlands, EU

🧭 Contract

🔍 IT

🏢 Company: EUROPEAN DYNAMICS

  • University Degree and at least 10 years of IT professional experience
  • More than 6 years of experience in the area of Software Quality Assurance in role of Test Analyst and/or Test Automation Engineer
  • Participation in a minimum of 3 projects requiring GUI and API testing
  • Good knowledge of C# or JAVA programming language in context of test automation, usage of object-oriented techniques, design patterns and best principles, knowledge of Git and work with pull requests
  • Good knowledge of manual regression testing and regression test automation at UI and API level using appropriate frameworks (e.g. Rest Assured, Rest Sharp, WebDriver)
  • Good knowledge of Behaviour Driven Development (BDD) methodology, its principles and practical implementation
  • Good knowledge of automation using BDD tools (e.g. Specflow, Cucumber)
  • Good knowledge of applying DevOps best practices, such as continuous testing, build and release pipelines, etc
  • Good knowledge of testing on system and acceptance test level using dynamic, static and experience-based test techniques
  • Excellent command of the English language
  • Definition of test cases and reporting of test results
  • Design, code and execute automated GUI tests using Selenium WebDriver with C# unit tests written in programming languages
  • Design, code and execute functional automated API tests on REST services using C# Rest Sharp
  • Definition and execution of functional manual test scenarios and scripts which are difficult to automate
  • Identification, re-testing of and reporting on defects
  • Support in definition/definition of test plans and user acceptance testing activities
  • Support systems integrations by active involvement in implementation/testing of API integration/tests on REST webservices

SQLAgileGitQA AutomationC#JiraAPI testingManual testingREST APIRegression testingTestRailSeleniumCI/CDDevOpsJSON

Posted 35 minutes ago
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🔥 Product Engineer (Protect)
Posted 41 minutes ago

📍 Worldwide

🧭 Full-Time

🔍 Software Development

🏢 Company: Flashbots👥 11-50💰 $60,000,000 Series B almost 2 years agoCryptocurrencyEthereumBlockchain

  • 2+ years of experience building backend services, frontends, and developer tools.
  • You excel in dynamic, asynchronous environments, exhibiting a strong bias for action and balancing independent work with team collaboration.
  • Your technical expertise is complemented by broad domain knowledge, enabling you to champion and build a wide range of solutions.
  • Develop our core orderflow products like Flashbots Protect and MEV-Share that are used by millions of Ethereum users, while also innovating on net new features and products to upgrade the transacting experience in crypto.
  • Collaborate with marquee crypto partners like Uniswap and Chainlink to design and productionize cutting-edge features
  • Champion documentation, testing, QA, and tasteful API and UX design to make sure our products are reliable, accessible, and delightful to use.
  • Create and use analytics to help us better understand and support our customers, and drive insights about product improvements.

Backend DevelopmentEthereumExpress.jsFrontend DevelopmentFull Stack DevelopmentGitJavascriptQAReact.jsUI DesignProduct DevelopmentAPI testingCI/CDRESTful APIsNodeJS

Posted 41 minutes ago
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🔥 Integration Manager
Posted 42 minutes ago

📍 United States, Canada

🧭 Full-Time

💸 170000.0 - 190000.0 USD per year

🔍 Fraud Prevention, AML Compliance

🏢 Company: Sardine👥 101-250💰 $70,000,000 Series C 3 months agoCryptocurrencyFraud DetectionFinTechSoftware

  • 5+ years of hands-on experience as an implementation manager, integrations engineer, technical account manager, solution architect, and systems analyst, working with multiple technical teams, both internal and external
  • 3+ years of B2B SaaS experience working in the relevant domain (payment, fraud, risk, or compliance)
  • Excellent written and verbal communication skills, including the ability to communicate complex technical and business concepts to technical and non-technical personas
  • Excellent organizational skills and the ability to manage multiple projects simultaneously and drive deliverables to completion
  • Experience with basic SQL querying and JSON payload analysis
  • Experience with APIs specs like OpenAPI, web development, and writing scripts to build internal tools (e.g., bash scripting, Python, SQL, Ruby, Golang, Postman)
  • Lead implementation and integration efforts for fraud and compliance products
  • Work closely with clients and provide end-to-end support during their onboarding process, setting our clients up for success
  • Own public-facing SDKs, APIs, integration guides, and support documents
  • Analyze clients' requirements from the technical and functional perspectives and design solutions by having a deep understanding of our system and products' capabilities
  • Manage implementation projects, including monitoring project quality, managing timelines, mitigating risk, and driving deliverables
  • Build a deep understanding of customers' business problems, technical requirements, and success criteria so that you can provide solutions utilizing Sardine's technology
  • Provide product feedback to internal stakeholders as the eyes and ears on the ground

PythonSQLBashAPI testingPostgresCommunication SkillsRESTful APIsComplianceJSONClient relationship managementCross-functional collaborationScriptingSaaS

Posted 42 minutes ago
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📍 United States

🧭 Full-Time

💸 130000.0 - 170000.0 USD per year

🔍 Software Development

  • 5+ years of experience in web development and engineering, including at least 2 years in a managerial or leadership role
  • Proven success leading cross-functional development teams and delivering complex web projects
  • Demonstrated ownership of a portfolio of websites, including hands-on experience managing site migrations
  • Strong technical expertise in modern web technologies such as JavaScript, TypeScript, React, Node.js, and CMS-driven architectures; experience with frameworks like Next.js, Nuxt, or Astro is a plus
  • Proficient in working with APIs, headless CMS platforms, and cloud-based architectures (AWS, GCP, or Azure)
  • Experienced with WordPress APIs and headless CMS implementations
  • Experience in media, publishing, or managing high-traffic content platforms is preferred
  • Deep understanding of performance optimization, accessibility (WCAG), SEO best practices, and responsive design
  • Experience managing development workflows, CI/CD pipelines, and Agile methodologies
  • Familiar with SSR, SSG, and composable architecture principles
  • Knowledgeable in conversion rate optimization (CRO) strategies and web analytics tools
  • Lead and manage a team of developers, ensuring high-quality execution of projects
  • Develop and implement technical strategies aligned with the Audience Technology roadmap
  • Foster a culture of innovation, collaboration, and continuous learning within the engineering team
  • Oversee the development, deployment, and maintenance of web applications and platforms, ensuring scalability, performance, reliability, and security
  • Collaborate with cross-functional teams—including Product, Design, and Audience Development—to define technical requirements and priorities
  • Ensure adherence to coding standards, development best practices, and thorough technical documentation
  • Guide architectural decisions, conduct technical design reviews, and lead code reviews to maintain high engineering standards
  • Monitor and optimize website performance to ensure fast load times and exceptional user experiences
  • Stay up to date with industry trends and emerging technologies to drive innovation
  • Support the growth and development of team members through coaching, mentorship, and constructive feedback

AWSBackend DevelopmentLeadershipNode.jsProject ManagementAgileCloud ComputingFrontend DevelopmentGCPJavascriptMySQLPeople ManagementReact.jsTypeScriptCross-functional Team LeadershipProduct DevelopmentAPI testingAzurePostgresNext.jsCommunication SkillsCI/CDSEOAgile methodologiesRESTful APIsMentoringMicroservicesTeam managementWordPress

Posted about 1 hour ago
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🔥 Staff Engineer (m/f/d)
Posted about 1 hour ago

📍 Germany, EU

🔍 E-pharmacy

  • Successfully designed and developed robust, highly available SaaS solutions that address complex business requirements.
  • Solid background in building reliable and scalable Java services, with expertise in system and software design principles.
  • Confident in using Docker and Kubernetes in production environments, ensuring efficient and reliable deployments.
  • Know how to design, document, and maintain APIs that are intuitive, scalable, and effective for integration with other systems.
  • Design and develop scalable, reliable solutions for managing orders across complex system landscapes.
  • Establish a collaborative, autonomous team culture, mentor team members, and share your expertise to drive innovation.
  • Provide tools, strategies, and functionality to ensure seamless integration and enablement across engineering teams.
  • Define KPIs and employ SRE practices to ensure reliability, observability and performance.

Backend DevelopmentDockerNode.jsDesign PatternsJavaJava EEKubernetesMongoDBSoftware ArchitectureSpring BootAPI testingREST APICI/CDMicroservicesSaaS

Posted about 1 hour ago
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📍 United States

🧭 Full-Time

💸 160000.0 - 208000.0 USD per year

🔍 Software Development

🏢 Company: Evolve

  • 5-8+ years of product development experience
  • 1-3+ years of engineering management experience
  • Experience designing, planning, and systems that process high volumes of data
  • Experience designing and implementing machine learning models and data science approaches including feed forward neural nets, complex exponential smoothing, and cosine similarity
  • Experience building commerce and pricing applications
  • Experience in an agile or extreme programming environment
  • Lead all strategy, design, and implementation efforts related to pricing our portfolio of 30k+ properties nightly
  • Oversee technical design and development of new features and capabilities in our pricing pipeline, including identifying, evaluating, and integrating new data sources and model updates to incorporate those sources
  • Lead all strategy, design, and implementation efforts related to human feedback tools and developing feedback loops
  • Recruit, lead and mentor an internal team of developers in our customer obsessed, high performance environment with a focus on end to end ownership, launching early and iterating quickly, and working from first principles
  • Partner cross functionally with the Product and the Commercial organizations including revenue management and sales to define roadmaps for improvements in alignment with the product vision
  • Work closely with the DevOps team to implement CI/CD processes that shorten the development life cycle and provide continuous delivery of high quality software
  • Establish coding standards and best practices
  • Define and implement agile processes that are a best fit and help drive engineering velocity and quality
  • Guide technology and tool decisions as they relate to development

AWSBackend DevelopmentPythonSQLAgileData AnalysisData MiningExpress.jsFrontend DevelopmentJavaMachine LearningAlgorithmsAPI testingData engineeringData scienceReactCI/CDRESTful APIsMicroservicesData visualizationData modelingNodeJSSoftware Engineering

Posted about 2 hours ago
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🔥 DERMS Integration Lead
Posted about 3 hours ago

📍 United States

🔍 Utilities

🏢 Company: vernova_externalsite

  • 5+ years relevant work experience.
  • Strong analysis skills including requirements elicitation and management skills.
  • Understand how to trace a requirement to a design specification and the test plans / cases.
  • Comfortable automating processes and utilizing or building scripting solutions to support product solutions.
  • Hands on experience with resolving IT N/W integration issues that arise when deploying a new enterprise level application to the client environment.
  • Software development experience and integrating custom solutions with a product, in our case the GE GridOS DERMS product.
  • Hands on Python enterprise application development
  • Highly familiar with emerging energy industry trends and implications on utility clients in the area of DER management, distribution planning, IT, SCADA and asset management with a strong background in analysis.
  • Engage with our utility clients to understand the impacts of distributed energy resources (DERs) on the distribution system by providing our utility clients with solutions to manage and plan for the emergence of more DERs.
  • Engage with our utility clients to understand their Business Needs and how our solution can align, meet and exceed their business needs.
  • Work collaboratively with a strong team of Technical Leads and Solution Specialists to provide input on solution architecture based on client needs and solution capabilities.
  • Define success criteria and author solution diagrams for the project.
  • Provides technical direction in the system development and has general responsibility for system integration and testing.
  • Works directly with the customer to resolve any technical issues that may develop. Keeps customers abreast of technical developments.
  • Takes the lead in the planning of the DERMS solution integration into the client environment with particular attention o DERMS to an ADMS / AEMS ecosystem.
  • Conducts technical review of application designs and works with the application areas to ensure that project requirements are met, providing technical guidance and direction in all phases.
  • Deploy GE GridOS DERMS solutions to client environments to support project use cases and DER planning scenarios.
  • Prepare input data such as network model files, load & generation forecasts, future planning scenarios, and generation cost data.
  • Prepare, modify, and configure client and testing input data for solutions by creating scripts and automating data processing systems.
  • Convert and validate client CIM distribution network models using developed tools and scripts, validating powerflow results.
  • Lead the custom adapter, connector, API, or microservice design and development to fully integrate the GE GridOS DERMS solution into the client environment.
  • Fluent in full stack development, backend services, middleware, and presentation layer including UI/UX needs in order to deliver custom integrated solutions to our clients.
  • Collaborate with our Service Engineering development lead during the development cycle to ensure all custom deliverables meet defined needs and standards and are on time and budget.
  • Respond to all client inquiries, bugs, and product ideas for in-flight projects and file tickets for the Product team.
  • Lead the simulation of project scenarios utilising combinations of solutions, configuration, and input data.
  • Perform use case and client specific testing runs and lead factory and site acceptance testing.
  • Debug software bugs, documenting issues for the testing teams.
  • Automate solution processes and complete workflows using existing API documentation.
  • Analyse and assess data and results of project activities and tasks.
  • Hands-On experience, with certification a plus, in deploying solution to the AWS cloud (GE’s and / or the clients).
  • Report on project outcomes and present findings to project partners and stakeholders.
  • Outline project goals, objectives, requirements, and technical functionality. Design, and document solutions to achieve the identified client requirements and use cases.
  • Work with the Project Managers to develop, document and standardize new internal and external processes, expectations, and deliverables across multiple projects.
  • Collaborate with other members of the Solutions team to expand our solution consulting and delivery practice, build standards of excellence, and continuously deliver innovative solution offerings for clients.
  • Use internal software demonstrations to develop user acceptance documentations, and training modules.
  • Train utility clients and end users on how to use GE GridOS DERMS to achieve their business cases.
  • Identify project delivery risks, recommending potential mitigation strategies, in collaboration with Project Manager
  • Support sales activities on occasion, providing technical demos and also identifying possible future upsell opportunities during the course of the project.
  • Participate in pre-sales activities, including leading the SOW deliverables, and assumptions creation.

AWSBackend DevelopmentProject ManagementPythonSoftware DevelopmentSQLCloud ComputingData AnalysisFull Stack DevelopmentJavaAPI testingCommunication SkillsAnalytical SkillsCollaborationCI/CDProblem SolvingRESTful APIsDevOpsMicroservicesData visualizationData modelingScriptingData analyticsData management

Posted about 3 hours ago
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🔥 Paid Social Director
Posted about 3 hours ago

📍 APAC, Australia

🔍 Digital Marketing

  • 7+ years of experience within Paid Social
  • Proficiency in working across integrated digital marketing campaigns that may require cross-channel collaboration with PPC, SEO, Display, Content Marketing, Email and Creative strategists
  • Skills using technology and processes involved in running high-spending paid social campaigns
  • Familiarity with social strategy, planning and execution at an enterprise level, on large and often complex campaigns
  • Significant channel management expertise with LinkedIn, Meta, and TikTok required
  • Experience working with B2B SAAS clients
  • Create impact within our Paid Social team and Paid Media capability.
  • Develop Jellyfish's paid social media offering
  • Support the roll-out of associated methodologies and techniques across other international offices.
  • Act as the lead for the Jellyfish social team
  • Actively lead and manage a portfolio of Paid Social clients across Australia and the APAC region, in conjunction with a team of Paid Social direct reports
  • Help identify commercial opportunities and collaborate with agency leads
  • Ensure the correct level of time and resource is being allocated to campaigns and that client budgets are being effectively used
  • Contribute to measurable success in growing the agency's revenue and profitability from social media
  • Support the business development team with pitches, and developing the paid social team so that they too can contribute to winning client pitches

Data AnalysisGoogle AnalyticsAPI testingWebRTCSEORESTful APIsClient relationship managementDigital MarketingA/B testing

Posted about 3 hours ago
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📍 Canada

💸 128000.0 - 170000.0 CAD per year

🔍 Software Development

🏢 Company: Mozilla👥 5001-10000💰 $300,000 Angel over 20 years ago🫂 Last layoff 7 months agoInternetOpen SourceWeb BrowsersSoftwareBrowser Extensions

  • 3+ years in community management, customer success, developer relations, or bug‑bounty program management.
  • Demonstrated experience moderating large technical communities (Discord, Discourse, Slack, or similar) and completing content/engagement strategies.
  • 2 years experience in Working knowledge of cybersecurity with a solid understanding of fundamentals—OWASP, CVSS, responsible disclosure, etc.—and familiarity with LLM safety concepts (prompt injection, jailbreaks, guardrails).
  • Outstanding written and verbal communication skills; capable of translating vulnerability details for both engineers and non-technical collaborators.
  • Data‑driven approach with proficiency in community or CS analytics (e.g., Orbit, Common Room, Salesforce, HubSpot).
  • Ability to work across time zones, handle multiple priorities, and thrive in a fast‑moving startup environment.
  • Own day‑to‑day management of Discord, X/Twitter, LinkedIn, and forum channels, moderation, content calendars, AMAs, and CTF events.
  • Launch community initiatives (monthly “Hack‑The‑Model” challenges, leaderboard shout‑outs, swag campaigns) that drive researcher retention and submission quality.
  • Analyze engagement metrics, produce quarterly community‑health reports, and iterate on strategy.
  • Build and maintain a contributor knowledge base (FAQs, disclosure templates, platform tips).
  • Onboard new program partners and researchers; deliver platform walk‑throughs, best‑practice guides, and SLAs.
  • Be the first line of triage for vulnerability reports: acknowledge receipt, clarify reproductions, and route to internal triage/engineering.
  • Lead the end‑to‑end researcher reward experience—eligibility checks, payout coordination, and post‑mortem communication.
  • Track CSAT, time‑to‑first‑response, and resolution cycles; surface insights to product and engineering for roadmap prioritisation.
  • Champion the “voice of the customer” internally, influencing feature design and documentation.

CybersecurityData AnalysisProduct DevelopmentAPI testingContent creationCommunication SkillsRESTful APIsTime ManagementAccount ManagementJSONRelationship managementData visualizationData analyticsCustomer supportCustomer Success

Posted about 3 hours ago
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