{"id":4198078,"url":"https://alion.io/job/darwoft-1048-fullstack-engineer-pythonreactreact-native-senior-remote-latam","title":"1048 · Fullstack Engineer (Python/React/React Native) · Senior · Remote · LATAM","company":{"id":61145,"name":"Darwoft","domain":"darwoft.com","url":"https://alion.io/company/darwoft","size_band":"201-500","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_regions","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":["AR","BR","CO","MX","AI","AG","AW","BS","BB","BZ","BM","BO","VG","BQ","KY","CL","CR","CW","DM","DO","EC","SV","FK","GF","GD","GP","GT","GY","HT","HN","JM","MQ","MS","NI","PA","PY","PE","PR","KN","LC"],"hiring_countries_total":49,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A/B Testing","optional":false},{"name":"Claude","optional":false},{"name":"Cursor","optional":false},{"name":"FastAPI","optional":false},{"name":"Firestore","optional":false},{"name":"Flask","optional":false},{"name":"GCP","optional":false},{"name":"Google BigQuery","optional":false},{"name":"Google Cloud Run","optional":false},{"name":"gRPC","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"MVP","optional":false},{"name":"New Relic","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"PagerDuty","optional":false},{"name":"Python","optional":false},{"name":"React Native","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"SQL","optional":false},{"name":"Terraform","optional":false},{"name":"React.js","optional":true},{"name":"WhatsApp","optional":true}],"status":"live","first_seen_at":"2026-11-12T21:08:32Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T21:08:32Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"1048 · Fullstack Engineer (Python/React/React Native) · Senior · Remote · LATAM\nLocation: LATAM - candidates based in Brazil preferred\nWork Model: 100% remote\nEngagement: Full-time contractor\nPayment: USD\nProject: Fintech - Cross-border Payments & Conversational Financial Services\n English Level: Upper-intermediate (B2) or higher\nGet to Know Us - Darwoft\nFounded in 2010, Darwoft is a Latin American software and AI company helping startups and global enterprises build, modernize, and scale digital products. Our work spans MVP development, enterprise applications, data engineering, AI, and product design-with a focus on secure, scalable, user-centered solutions.\nOur people-first culture brings together technical expertise, curiosity, and collaboration. At Darwoft, you'll work alongside multidisciplinary teams, contribute to international projects, and keep growing through shared knowledge and continuous learning.\nAbout the Project\nWe're partnering with a fast-growing fintech company making financial services more accessible to Latino communities in the United States.\nIts platform combines AI-powered conversational experiences with real-time financial infrastructure, allowing users to send money internationally through familiar channels such as WhatsApp. The product ecosystem is expanding across web and mobile applications, with financial services that go beyond remittances into credit, savings, and digital wallets.\nYou'll help connect backend systems, conversational workflows, and user interfaces to make complex financial transactions simple and accessible.\nAbout the Role\nWe're looking for two Senior Fullstack Engineers to build and evolve financial products across backend, web, and mobile.\nAs part of the Product Engineering team, you'll contribute to the full development lifecycle: designing backend microservices, building user interfaces, integrating APIs, and improving features based on customer feedback and product analytics.\nThe technology environment includes Python, React, React Native, and Google Cloud. We value engineers who can work across application layers, make thoughtful technical decisions, and take ownership of features from implementation through production.\nThe team welcomes diverse technical backgrounds. Familiarity with the stack is valuable, alongside strong engineering fundamentals and the ability to learn and adapt.\nWhat You'll Be Doing\nDesign, build, and maintain scalable backend microservices supporting financial transactions and the core conversational platform.\nDevelop and improve web interfaces with React and contribute to mobile experiences built with React Native.\nConnect frontend applications with backend APIs to deliver consistent user journeys across web, mobile, and messaging channels.\nBuild and iterate on conversational interfaces that help users interact naturally with financial services.\nContribute to infrastructure capable of handling millions of daily requests and real-time messaging workloads.\nDevelop and integrate backend services using Google Cloud technologies and established engineering practices.\nApply architectural patterns that support maintainability, scalability, and clear separation of responsibilities.\nSupport product experimentation and controlled releases through A/B testing, feature flags, and gradual rollouts.\nCollaborate with product managers, UX/UI designers, engineers, and business stakeholders to translate customer needs into working software.\nUse customer feedback and analytics to improve usability, reliability, and the overall conversational experience.\nMentor junior developers and contribute to technical discussions and shared engineering practices.\nWhat You Bring\n5+ years of professional experience in software engineering, with experience delivering fullstack applications in fast-paced environments.\nA proven ability to build, ship, and improve production software with measurable user or business impact.\nExperience working across backend services and frontend applications, including API integration.\nStrong foundations in algorithms, data structures, and software design.\nExperience with web services, including REST APIs, and familiarity with SOAP.\nFamiliarity with Hexagonal Architecture and Event-Driven Architecture.\nUnderstanding of A/B testing, feature flags, and gradual rollout strategies.\nFamiliarity with AI-assisted development tools such as Claude, Cursor, Codex, or similar technologies.\nStrong prioritization skills and ownership of delivery and technical decisions.\nThe ability to collaborate effectively across engineering, product, design, and business teams.\nCuriosity, adaptability, and a commitment to continuous learning.\nAdvanced English, with the ability to communicate clearly in technical discussions and cross-functional collaboration.\nTechnology Environment\nYou don't need to have used every technology below. Relevant experience with comparable tools and the ability to adapt are also valued.\nBackend: Python, Flask, FastAPI, REST APIs, gRPC\nFrontend: React, JavaScript, HTML/DOM, CSS, HTTP, AJAX\nMobile: React Native\nData & Caching: SQL, Redis, Firestore\nGoogle Cloud: Cloud Run, Pub/Sub, Cloud Storage, Artifact Registry, BigQuery, Cloud Composer\nInfrastructure: Kubernetes, Terraform\nObservability & Operations: New Relic, PagerDuty\nNice to Have\nHands-on experience with Python and Flask or FastAPI.\nExperience building production web applications with React.\nExperience developing mobile applications with React Native.\nExperience building chatbots, conversational interfaces, or messaging integrations.\nFamiliarity with Google Cloud services, Kubernetes, or Terraform.\nExperience working with high-volume transactional systems.\nExperience or a strong interest in fintech, payments, remittances, or digital wallets.\nWhat Darwoft Offers\nFull-time contractor agreement with payment in USD.\n100% remote work.\nArgentina's public holidays.\nPTOs\nEnglish classes.\nReferral program.\nAccess to learning platforms.\nA collaborative international environment with opportunities to learn and contribute to meaningful products.\nExplore this and other opportunities at:\nwww.darwoft.com/careers","description_format":"text","description_chars":6143,"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":"Advanced (C1)","optional":false}]},"benefits":["Continuous learning"],"hiring_locations":[{"name":"Argentina","iso":"AR","kind":"country"},{"name":"Brazil","iso":"BR","kind":"country"},{"name":"Colombia","iso":"CO","kind":"region"},{"name":"Mexico","iso":"MX","kind":"region"},{"name":"Anguilla","iso":"AI","kind":"region"},{"name":"Antigua and 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