{"id":2891559,"url":"https://alion.io/job/cellpoint-digital-senior-software-engineer-integrations-fullstack-developer","title":"Senior Software Engineer- Integrations Fullstack Developer","company":{"id":4404866,"name":"Cellpoint Digital","domain":"cellpointdigital.com","url":"https://alion.io/company/cellpoint-digital","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Deel","truth_index":{"grade":"B","score":70,"open_postings":12,"ghost_share":0.5,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pune, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":15500,"max_usd":36000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":159},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Bootstrap","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"PCI DSS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Framework","optional":false},{"name":"Swagger","optional":false},{"name":"Tokenization","optional":false},{"name":"Java","optional":true}],"status":"live","first_seen_at":"2026-09-16T10:12:47Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-10-22T13:11:34Z","board_verified":true,"closed_at":null,"days_open":36,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":35},"description":"Join CellPoint Digital: Shape the Future of Payments with Us!\nAt CellPoint Digital, we’re revolutionizing the way businesses in the air, travel, and hospitality sectors manage their payments.\nOur leading payment orchestration platform helps some of the world’s leading brands make payments simpler, smarter and profitable- from improving payment experiences and maximizing approval rates, to reducing costs and unlocking new opportunities.\nBut technology is only part of the story.It’s our people who make the difference.\nWe’re a global team of innovators, problem-solvers and ambitious professionals who care about the work we do and the impact we have. We work across borders, functions and cultures, bringing different perspectives together to solve complex problems and deliver meaningful results for our customers.\nJoin us as a Senior Software Engineer - Integration Full Stack Developer on our mission to turn payments into possibilities!\nSenior Software Engineer - Integration Full Stack Developer\nWe are looking for a highly skilled Senior Software Engineer - Integration Full Stack Developer with 5+ years of experience in software engineering to design, develop, and support secure, scalable, and high-performance integration solutions. This is a hands-on technical role focused on XSLT, Java, third-party integrations, payment gateway integrations, APIs, XML/JSON transformations, and end-to-end enterprise integration development, while also contributing to React.js-based front-end development.\nThe ideal candidate will possess strong integration expertise, excellent analytical and troubleshooting skills, and experience building resilient, production-ready integration platforms supporting enterprise-scale payment solutions.\nHow You Will Make an Impact:\nDesign and develop enterprise integration solutions using XSLT and Java.\n\nBuild XML/XSLT transformations, mappings, validations, and data conversion workflows.\n\nDevelop and maintain REST/SOAP APIs, integration services, adapters, and third-party system integrations.\n\nIntegrate with payment gateways, PSPs, external APIs, and customer systems.\n\nDevelop backend services using Java, Spring Framework, and Spring Boot.\n\nDevelop responsive front-end components using React.js, Redux, JavaScript, HTML5, CSS3, and Bootstrap.\n\nBuild secure integrations using authentication, authorization, certificates, encryption, and secure communication protocols.\n\nDesign resilient integration solutions using retries, timeout handling, idempotency, fault tolerance, and robust error handling.\n\nDevelop unit tests, integration tests, mock services, and participate in code reviews and static code analysis.\n\nPerform end-to-end debugging, API troubleshooting, log analysis, and root cause analysis across integration flows.\n\nDevelop and support applications using PostgreSQL, Google Cloud Platform (GCP), Docker, Kubernetes, and CI/CD pipelines.\n\nSupport production integrations, customer onboarding, and complex implementation activities.\n\nCollaborate with Product, QA, DevOps, customers, and external partners to deliver reliable integration solutions.\n\nLeverage AI-assisted software engineering tools responsibly to improve development productivity, code quality, integration testing, debugging, and documentation while maintaining engineering best practices.\n\nSkills you will have fine-tuned:\nIntegration: XSLT, XML, XPath, data mapping/transformation, third-party integrations\n\nBackend: Java, Spring/Spring Boot, REST APIs, Microservices\n\nFrontend: React.js, Redux, JavaScript (ES6+), HTML5, CSS3, Bootstrap\n\nAPI & Services: REST, SOAP, JSON, API-first, synchronous/asynchronous integrations\n\nSecurity: OAuth/OAuth2, token-based authentication, API security, certificates, encryption\n\nDatabase: PostgreSQL\n\nCloud Platform: GCP\n\nExperience integrating Payment Service Providers (PSPs), payment gateways, and payment orchestration platforms.\n\nKnowledge of Cards, Digital Wallets, Alternative Payment Methods (APMs), callbacks, webhooks, redirects, and payment status flows.\n\nKnowledge of PCI DSS, payment security, tokenization, encryption, certificates, and compliance.\n\nExperience with OpenAPI/Swagger, API versioning, and integration lifecycle management.\n\nKnowledge of Java/JVM technologies.\n\nExperience building highly available, resilient, high-volume, and transaction-intensive integration platforms.\n\nFamiliarity with AI-powered developer tools to improve engineering productivity and software quality.\n\nWhat's in it for you:\nWe offer you the opportunity to be an innovator, challenge the status quo, and redefine the payments category\n\nCompetitive salary in a fast-growing start-up\n\nMedical insurance with coverage for dependents (parents, spouse, children)\n\nOpportunity for personal and professional growth in a dynamic industry\n\nPlease note, we retain applicant data for 12 months for recruitment purposes and future opportunities, after which it is securely deleted. 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