{"id":3794587,"url":"https://alion.io/job/techifide-senior-integration-engineer-c-apis-enterprise-systems","title":"Senior Integration Engineer - C#, APIs & Enterprise Systems","company":{"id":4512918,"name":"Techifide","domain":"techifide.com","url":"https://alion.io/company/techifide","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["São Paulo, Brazil"],"countries":["BR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Apache Kafka","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"SQL","optional":false},{"name":"API Gateway","optional":true},{"name":"AWS","optional":true},{"name":"AWS Lambda","optional":true},{"name":"ETL/ELT","optional":true},{"name":"GitLab","optional":true},{"name":"IAM","optional":true},{"name":"Jira","optional":true},{"name":"Oracle","optional":true},{"name":"Postman","optional":true},{"name":"Pytest","optional":true}],"status":"live","first_seen_at":"2026-11-05T08:36:56Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-10T01:28:24Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Before You Apply\nYou must be physically located in Brazil\nCVs MUST be submitted in English\nMinimum Years' Experience: 5\nModern businesses depend on multiple software platforms working together. But connecting these systems isn't always straightforward. Different architectures, data structures, authentication methods and business processes create complex integration challenges.\nWe're looking for a Senior Integration Engineer who enjoys solving these challenges.\nYou'll join a software engineering team developing enterprise technology used to manage complex projects and business operations. Your responsibility will be to design, build and maintain reliable integrations between the company's platform and its customers' enterprise systems.\nThis is a hands-on engineering position combining C# development, API integration, middleware, event-driven architecture and direct customer interaction.\nWe're not looking for someone who simply connects APIs. We want an engineer who understands how enterprise systems communicate, anticipates potential failures and knows how to build integrations that are reliable, secure and maintainable.\nWhat You'll Be Doing\nDesign and Deliver Enterprise Integrations\nTake ownership of integration projects from initial requirements and technical design through development, testing and production deployment.\nDesign and develop REST APIs using C# and .NET.\nConnect enterprise applications, including ERP, financial management and document management systems.\nBuild integrations using APIs, middleware, webhooks, messaging and event-driven architectures.\nWork with synchronous and asynchronous communication patterns, including Kafka-based event processing.\nImplement data mapping, transformation and orchestration between different systems.\nDevelop reusable integration components and patterns that simplify future projects.\nMake Integrations Reliable\nDesign integrations with appropriate error handling, retry mechanisms, logging and monitoring.\nInvestigate failures, identify root causes and implement sustainable solutions.\nEnsure integrations handle duplicate messages, unexpected data and temporary service interruptions.\nDevelop automated tests covering APIs, integration workflows and end-to-end scenarios.\nSupport integrations running in production and continuously improve their reliability and performance.\nManage deployments across development, testing and production environments.\nWork Directly With Customers\nCollaborate with customers to understand their technical environments, integration requirements and business processes.\nParticipate in technical discussions, integration testing and user acceptance testing.\nTroubleshoot customer-reported integration issues and communicate progress clearly.\nTranslate complex technical problems into explanations that customers and non-technical stakeholders can understand.\nWork closely with internal engineering, implementation, QA and customer-facing teams.\nWhat We're Looking For\nEssential Experience\nEnterprise Integration\nAt least 5 years of relevant software engineering or enterprise integration experience.\nProven experience designing, developing and supporting integrations between enterprise applications.\nStrong understanding of middleware, integration architecture and common enterprise integration patterns.\nExperience working with REST APIs, SOAP services, webhooks and messaging systems.\nUnderstanding of event-driven architectures and asynchronous processing.\nExperience with data mapping, transformation, orchestration and error recovery.\nSoftware Engineering\nStrong hands-on C# and .NET development skills.\nExperience designing and implementing RESTful APIs.\nGood understanding of API authentication and security, including OAuth 2.0 and JWT.\nSolid SQL knowledge and experience working with relational databases.\nFamiliarity with automated testing, version control and CI/CD practices.\nTroubleshooting and Ownership\nDemonstrated ability to investigate complex integration failures across multiple systems.\nStrong analytical thinking and structured problem-solving skills.\nExperience supporting production systems and performing root cause analysis.\nAbility to work independently, manage priorities and take responsibility for delivering solutions.\nCommunication\nExcellent communication skills, particularly when discussing technical issues with customers.\nConfidence participating in customer-facing technical meetings.\nAbility to explain technical problems, proposed solutions and trade-offs clearly.\nA collaborative mindset and willingness to work across different engineering and business teams.\nNice to Have\nExperience with any of the following would be beneficial, but isn't essential:\nWorkato or another enterprise integration platform (iPaaS).\nKafka or similar event-streaming technologies.\nAWS services, particularly API Gateway, Lambda and IAM.\nSAP, Oracle or other enterprise ERP platforms.\nETL processes and data integration pipelines.\nGitLab, Postman, pytest and Jira.\nConstruction technology, capital project management or project controls software.\nYou don't need previous Workato experience to succeed in this role. Strong integration engineering fundamentals, C# expertise and the ability to learn new technologies are more important.\nTechnology Environment\nYou'll work with a combination of established enterprise technologies and modern integration tools:\nBackend: C#, .NET\nAPIs: REST, OpenAPI, SOAP\nIntegration: Workato, middleware, webhooks, event-driven architecture\nMessaging: Kafka\nCloud: AWS, API Gateway, Lambda\nDatabase: SQL Server\nSecurity: OAuth 2.0, JWT\nDevelopment tools: GitLab, Postman, Jira\nTesting: API and end-to-end integration testing\nWhat Success Looks Like\nWithin your first few months, you'll be independently delivering integrations, collaborating directly with customers and contributing to the reliability of the integration platform.\nOver time, you'll help establish reusable integration patterns, improve troubleshooting and monitoring capabilities, and make it easier to connect new enterprise systems.\nYour work will directly influence how customers exchange data, automate processes and get value from their software.\nWhy This Role?\nThis is an opportunity to work on technically challenging enterprise integrations where your decisions have a direct impact on customers.\nYou'll have the autonomy to solve complex engineering problems, the opportunity to work across different technologies and the responsibility to see your solutions through from design to production.\nIf you enjoy understanding how systems work, solving problems that cross application boundaries and building technology that customers can depend on, we'd like to hear from you.","description_format":"text","description_chars":6703,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All 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