{"id":2179502,"url":"https://alion.io/job/cit-senior-fullstack-engineer-brazil","title":"Senior Fullstack Engineer, Brazil","company":{"id":957,"name":"CI&T","domain":"ciandt.com","url":"https://alion.io/company/ciandt","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":92,"open_postings":19,"ghost_share":0,"stale_share":0.474,"repost_share":0.053,"time_to_fill_p50_days":16,"computed_at":"2026-10-10T05:45:15Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Brazil"],"countries":["BR"],"hiring_countries":["BR"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":56000,"max_usd":124000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":14},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Celery","optional":false},{"name":"Django REST Framework","optional":false},{"name":"Next.js","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"CI/CD","optional":true},{"name":"Django","optional":true},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-09T14:04:41Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-12T00:20:33Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"We are looking for a Senior Full-stack Engineer to help evolve a web application, build reliable enterprise integrations, and scale document processing capabilities.\nIn this role, you will work across front-end and back-end development, translating design specifications into high-quality user experiences while developing versioned APIs and scalable processing workflows. You will contribute to integrations with enterprise platforms such as SAP S/4HANA and Ivalua, helping deliver robust and maintainable solutions.\nResponsibilities\nRebuild and enhance the web application based on the Design team's mockups, using Next.js, React, and TypeScript.\nDevelop user-facing features, including PDF grounding views that help users review and validate information extracted from documents.\nDesign, develop, and maintain versioned APIs using Python and Django REST Framework.\nBuild and maintain integrations between Pegasus, SAP S/4HANA, and Ivalua, ensuring reliable data exchange across systems.\nScale asynchronous batch processing with Celery to support workloads involving up to 10,000 PDF documents.\nWork with PostgreSQL to support application data management and persistence.\nImplement user metrics to provide insights into application usage and support data-driven improvements.\nEnsure application quality through automated testing, code reviews, documentation, and engineering best practices.\nIdentify and resolve performance bottlenecks across the application, APIs, integrations, and background processing workflows.\nCollaborate with design, product, and engineering teams to deliver scalable solutions aligned with business needs.\nRequirements for this challenge\nStrong professional experience in full-stack software development.\nHands-on experience with Next.js, React, and TypeScript.\nStrong proficiency in Python and experience developing APIs with Django REST Framework.\nSolid knowledge of PostgreSQL, including data modeling and database interactions.\nExperience building and maintaining RESTful APIs and integrating external enterprise systems.\nExperience with asynchronous task processing and background jobs, particularly Celery.\nUnderstanding of scalable application architecture, performance optimization, and reliable data processing.\nExperience translating design mockups into responsive, user-friendly interfaces.\nKnowledge of software testing, version control, code reviews, and maintainable coding practices.\nStrong analytical and problem-solving skills.\nAbility to collaborate effectively with cross-functional teams and take ownership of technical solutions.\nNice to Have\nExperience integrating with SAP S/4HANA and procurement or enterprise platforms such as Ivalua.\nExperience processing large volumes of documents, particularly PDFs.\nFamiliarity with document preview, annotation, grounding, or validation interfaces.\nExperience implementing product analytics, user metrics, and usage tracking.\nKnowledge of cloud-based deployments, CI/CD pipelines, and application observability.\nExperience improving the performance and reliability of distributed processing 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