BASE24 Software Engineer

ACI’s interview process typically starts with a timed online aptitude and coding test, followed by a technical interview focusing on C++ concepts, BASE24‑eps architecture, and payment domain knowledge. The final HR round assesses cultural fit and communication skills. Candidates should practice system design, network protocols, and problem‑solving under time pressure.

ACI promotes a collaborative and innovative work culture where engineers are encouraged to experiment and own their projects. The company offers clear career progression, regular skill‑upgradation programs, and a balanced approach to work‑life integration, especially with its hybrid work model.

B.Tech/B.E. or M.Tech in Computer Science, Information Technology, or related engineering discipline; Minimum CGPA/percentage 6.5/70%; Batch years 2025‑2027 (or equivalent); No active backlogs at the time of joining; Strong foundation in data structures, algorithms, and operating systems; Ability to work in a Unix/Linux environment.

Round 1: Online aptitude & coding test → Round 2: Technical interview (design, C++ coding, BASE24 concepts) → Round 3: HR interview (fitment, communication, expectations)

ACI Worldwide is a global leader in real‑time electronic payment and banking solutions. With more than three decades of experience, ACI powers the payments ecosystem for banks, merchants, and processors across 100+ countries. The company’s portfolio includes transaction processing, fraud management, and digital banking platforms that handle billions of dollars daily. ACI’s culture blends high‑tech innovation with a collaborative, people‑first mindset, allowing engineers to see the tangible impact of their work on the world’s financial infrastructure. As a BASE24 Software Engineer based in Pune, you will become an integral part of the team that builds and maintains the BASE24‑eps platform – the backbone of many high‑volume payment switches. The role is hybrid, offering the flexibility of remote work combined with on‑site collaboration in a vibrant tech hub. You will work closely with product owners, QA, infrastructure, and support teams to deliver robust, secure, and high‑throughput payment solutions that meet stringent card‑scheme mandates. **Key Responsibilities** 1. Independently design, develop, test, and deliver high‑quality C++ modules for BASE24‑eps applications. 2. Create and maintain High‑Level Designs (HLDs) aligned with functional and technical specifications. 3. Develop and troubleshoot network interfaces, ensuring correct message flows and integrations with external systems. 4. Conduct end‑to‑end testing using ASSET simulators to validate transaction processing across Visa, Mastercard, and Banknet schemes. 5. Perform root‑cause analysis for production incidents and provide timely fixes and preventive measures. 6. Support database operations involving Oracle and PostgreSQL, writing efficient SQL queries and stored procedures. 7. Automate routine tasks and operational workflows using Shell/Batch scripts and Vagrant for environment provisioning. 8. Collaborate with cross‑functional teams to ensure seamless release management and adherence to change‑control processes. 9. Participate in code reviews, knowledge‑sharing sessions, and continuous improvement initiatives. 10. Mentor junior engineers and contribute to building a strong engineering culture. **Tech Stack**: C++ (Unix/Linux), BASE24‑eps, ASSET simulators, Oracle, PostgreSQL, Shell/Batch scripting, Vagrant, Git, Jenkins. **Growth Path**: Starting as a Software Engineer, you can progress to Senior Engineer, Technical Lead, and eventually Architecture roles within the payments domain. ACI invests heavily in upskilling through certifications, internal workshops, and exposure to global payment standards. **Why Join ACI?** You will work on mission‑critical systems that process millions of transactions per day, gaining deep expertise in payment card schemes and high‑performance computing. The hybrid model offers work‑life balance while keeping you connected to a global community of innovators. Competitive compensation, performance‑linked bonuses, and a supportive learning environment make ACI an ideal launchpad for a rewarding career in fintech.