Candescent is the leading cloud-based digital banking solutions provider for financial institutions. We are transforming digital banking with intelligent, cloud-powered solutions that connect account opening, digital banking, and branch experiences for financial institutions. Our advanced technology and developer tools enable seamless, differentiated customer journeys that elevate trust, service, and innovation. Success here requires flexibility in a fast-paced environment, a client-first mindset, and a commitment to delivering consistent, reliable results as part of a performance-driven, values-led team. With team members around the world, Candescent is an equal opportunity employer.

Location: Hyderabad, India

Reports to: Director, Integrations Engineering

Company: Candescent – Powering the Future of Digital Banking

Role Summary

Candescent is transforming digital banking with a modern, AI-powered platform that empowers financial institutions to deliver smarter, faster, and more personalized customer experiences.

The Principal Engineer will be responsible for the Integration Platform supporting critical banking and financial services workloads. Deep experience integrating with card and core banking processors (FiServ, Visa, FIS) is needed. This role requires deep expertise in designing, building, scaling, and modernizing high-performance distributed systems using Spring, WebFlux, Netty, RESTful APIs, and microservices running on cloud-native environments (Kubernetes). The Principal Engineer will be accountable for architectural decisions, platform reliability, and end-to-end engineering excellence.
In addition, the role requires mentoring engineers, improving productivity and code quality, and proactively detecting, triaging, and resolving production issues to ensure optimal customer experience and platform stability.

Key Responsibilities

• Architect, design, and lead development of integration solutions using Spring Boot, Spring WebFlux, Netty, REST APIs, and microservices.
• Define and enforce architectural patterns for scalability, performance, reliability, and security across distributed systems.
• Lead modernization initiatives for legacy integration components into reactive, cloud-native solutions.

• Lead system performance optimization across JVM and reactive stacks, including GC, Netty event loops, thread pools, memory profiling, and high-throughput architecture design.
• Drive reliability and scalability through deep latency/throughput analysis and implementation of resilience patterns such as backpressure handling, circuit breakers, retries, rate limiting, failover, and chaos testing
• Collaborate with SRE, cloud operations, and support teams to ensure high availability and observability, while defining system health baselines, SLAs, SLOs, and error budget

• Mentor and upskill engineers in distributed system design, code quality, testing, observability, and operational readiness.
• Review and improve engineering practices, design reviews, and coding standards across teams.
• Drive productivity enhancements through tooling, automation, CI/CD improvements, and reusable frameworks.

• Work closely with product managers, architects, QA, DevOps, and platform teams to ensure alignment with business objectives and regulatory requirements.
• Participate in technical governance, risk assessments, and compliance reviews.

Requirements

• 15+ years of hands-on engineering experience with at least 4–6 years in a senior or principal engineering role.
• Strong proficiency in:
  • Spring Boot, Spring WebFlux, and reactive programming
  • Netty, Reactor, non-blocking I/O
  • REST APIs, API design, and microservices
  • Distributed systems architecture
  • Kubernetes, Docker, container orchestration
  • GCP/AWS/Azure cloud platforms
• Expertise in debugging complex production systems (thread dumps, heap dumps, GC logs, performance profiling).
• Experience with CI/CD pipelines, GitOps, ArgoCD, and automated deployments.
• Excellent problem-solving, debugging, and incident management skills; able to lead complex triage efforts under time pressure

• Deep understanding of banking domain integration patterns (onboarding, KYC, transaction flows, core banking interfaces).
• Integration experience with core banking and card processors is required.
• Familiarity with security & compliance standards (OAuth2, mTLS, encryption, audit, data privacy, regulatory controls).

• Ability to lead without authority and influence engineering direction across teams.
• Crisp communication skills for senior stakeholders, architects, and engineering leadership.

Preferred Qualifications

• Experience with:
  • Distributed tracing tools (OpenTelemetry, Jaeger, Zipkin)
  • APM tools like Dynatrace, New Relic, AppDynamics
  • High-throughput integration workloads (>500 TPS)
  • Circuit breaker frameworks (Resilience4j) and API gateways
  • Caching frameworks (Redis, Hazelcast) and performance accelerators
• Contributions to internal frameworks, reusable libraries, or open-source projects.

Why Candescent?

• Join a fast-growing digital banking SaaS company focused on platform transformation and AI-led innovation.
• Shape the future of financial technology by building solutions that matter—for customers and banks
• Collaborate with world-class talent across engineering, design, and product.
• Hybrid work model, and opportunity to lead global initiatives.

Statement to Third Party Agencies
To ALL recruitment agencies: Candescent only accepts resumes from agencies on the preferred supplier list. Please do not forward resumes to our applicant tracking system, Candescent employees, or any Candescent facility. Candescent is not responsible for any fees or charges associated with unsolicited resumes.