{"id":132525,"url":"https://alion.io/job/aci-worldwide-principal-software-engineer-net","title":"Principal Software Engineer (.NET)","company":{"id":20985,"name":"ACI Worldwide","domain":"aciworldwide.com","url":"https://alion.io/company/aci-worldwide","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"A","score":90,"open_postings":12,"ghost_share":0,"stale_share":0.417,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"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":21000,"max_usd":49000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":57},"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Akamai","optional":false},{"name":"Angular","optional":false},{"name":"ASP.NET Core","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Entity Framework Core","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"RabbitMQ","optional":false},{"name":"RAG","optional":false},{"name":"Selenium","optional":false},{"name":"SOAP","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-07-30T00:00:00Z","employer_posted_date":"2026-07-30","last_verified_at":"2026-10-17T13:37:51Z","board_verified":true,"closed_at":null,"days_open":79,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":79},"description":"Powering the world’s payments ecosystem\nACI powers the payments ecosystem - globally, and you power ACI. You’ll innovate, collaborate, and grow - in an energetic technology culture with decades of proven success. ACIers - in all roles and levels - are truly your colleagues and many are your friends. Our size and reach allow you to see the global impact of your work. You are visible, your talents are valued, and you are empowered to shape the future of payments.\nAs a Principal Software Engineer (.NET) in Pune, you will join a diverse, passionate team, dedicated to powering the world’s payments ecosystem!\nJob Summary\nACI Worldwide is seeking a Principal Software Engineer to provide technical leadership and architectural direction for mission-critical payment solutions.\nThis role requires deep expertise in .NET, C#, Microservices, Cloud Technologies, Distributed Systems, DevOps practices , QA automation practices and AI-enabled solutions, with a proven ability to influence engineering strategy and drive innovation across multiple teams.\nKey Responsibilities\nDefine architecture, technical strategy, and engineering standards for enterprise-scale applications.\nDesign and deliver scalable, secure, and high-performance solutions using modern .NET technologies.\nLead cloud-native and microservices-based transformation initiatives.\nDrive engineering excellence through architecture reviews, technical mentorship, and best practices.\nPartner with Product, Engineering, and Business leaders to align technology investments with business goals.\nEvaluate and adopt emerging technologies, including AI and intelligent automation.\nRequired Qualifications\nBachelor's degree in Computer Science or related field.\n12+ years of software engineering experience with demonstrated technical leadership.\nProven track record designing and delivering large-scale enterprise software solutions.\nExperience leading architecture and technical initiatives across multiple teams.\nPayments, FinTech, Banking, or other regulated industry experience preferred.\nTechnical Expertise\nExpert proficiency in C#, .NET Core/.NET 8+, Angular 15+ , ASP.NET Core, Entity Framework, Ngnix and REST & SOAP APIs.\nDeep expertise in Microservices, Distributed Systems, Event-Driven Architecture, and Domain-Driven Design.\nStrong experience with AWS(preferred),Azure, Docker, Kubernetes, and CI/CD pipelines.\nInfrastructure understanding - E2E request flow , Load-balancer , Akamai , firewalls , SAML\nQA automation Practices and tools usages - like Selenium , playwright , AI based tools \nExperience with RabbitMQ, MSMQ , SQL Server.\nStrong understanding of performance optimization, scalability, resiliency, and application security.\nAI & Emerging Technologies\nExperience integrating Generative AI, AI/ML, LLMs, RAG, or AI-powered capabilities into enterprise applications.\nKnowledge of AI development tools and modern software engineering productivity platforms.\nAbility to identify and drive AI initiatives that improve customer experience, operational efficiency, and product innovation.\nProfessional Skills\nExcellent communication and stakeholder management skills.\nStrong architectural mindset with a focus on business outcomes.\nAbility to influence and lead without direct authority.\nPassion for mentoring and developing engineering talent.\nPreferred Qualifications\nExperience building enterprise payment or financial technology platforms.\nCloud and architecture certifications.\nExperience leading large-scale modernization, cloud, or AI transformation programs.\nIndustry thought leadership, publications, patents, or conference speaking experience.\nIdeal Candidate\nA hands-on Principal Engineer with expertise in .NET, Cloud, Microservices, Distributed Systems, and AI technologies, capable of shaping technical strategy while delivering highly scalable, secure, and mission-critical enterprise solutions.\nCore Capabilities\nWe seek colleagues who embody our core capabilities - these shape our culture and enable us to make a meaningful impact together:\nEnsure Accountability: holding self and others accountable to meet commitments.\n\nDrives Results: consistently achieving results, even under tough circumstances.\n\nCustomer Focus: building strong customer relationships and delivering customer-centric solutions.\n\nCultivate Innovation: creating new and better ways for the organization to be successful.\n\nCollaborates: building partnerships and working collaboratively with others.\n\nCourage: stepping up to address difficult issues, saying what needs to be said.\n\nIn return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package-all within an innovative and collaborative work environment.\nAre you ready to help us transform the payments ecosystem? To learn more about ACI Worldwide, visit our web site at www.aciworldwide.com","description_format":"text","description_chars":4878,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Software & Embedded Finance","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-07-30T00:00:00Z"}],"visa":[],"liveness":{"score":30,"band":"fade","label":"Fading","p_open":1,"p_active":0.679,"p_room":0.44,"age_days":79,"expected_fill_days":56,"reasons":["conf:5","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/aci-worldwide-principal-software-engineer-net","json_url":"https://alion.io/job/aci-worldwide-principal-software-engineer-net.json","meta":{"generated_at":"2026-10-17T14:25:54Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":19442,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":20985},"rest":"https://alion.io/mcp/rest/get_company?id=20985"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Faci-worldwide-principal-software-engineer-net"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Faci-worldwide-principal-software-engineer-net"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Faci-worldwide-principal-software-engineer-net"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/aci-worldwide-principal-software-engineer-net\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Faci-worldwide-principal-software-engineer-net"}]}