Principal Software Engineer Job at RX Global (Chennai)

Job Description

The Principal Software Engineer is the senior-most hands-on technical leader for a bounded domain (typically spanning 2–4 delivery teams). This role sets the technical direction, defines and governs domain architecture, and acts as a force multiplier—enabling teams to deliver secure, reliable, maintainable, cost-effective solutions on AWS that meet business outcomes. The Principal is accountable for the technical health and evolution of the domain: architectural coherence, non-functional requirements, reliability, security posture, and continuous improvement. This role influences across teams without direct authority, building alignment through strong engineering judgement, data-driven decisions, and clear communication. Serves as a senior source of expertise, is expected to be seen as a “go to” person across the department for a set of technologies. Working collaboratively, will think not only about solving business and technical problems but also about the long term maintenance, risk and cost of change of software solutions.

Job Responsibility

Engineering Leadership & Culture: Create an environment where teams can do their best work by removing blockers, improving engineering practices, and contributing to a culture of psychological safety and high standards
Mentor and coach engineers across teams—especially senior engineers and emerging tech leads—in architecture, systems thinking, and operational excellence
Promote strong technical ownership ("you build it, you run it"), including operational readiness and post-incident learning
Support scalable knowledge-sharing mechanisms (e.g., tech talks, playbooks, templates, reference implementations)
Participate in hiring loops and help onboard new engineers into domain patterns and practices
Provide hands-on contributions where needed (prototypes, reference implementations, complex refactors, high-risk changes)
Guide teams in decomposition and sequencing to reduce delivery risk
support estimation/sizing and technical discovery
Leads through influence
demonstrates integrity, accountability, and constructive challenge
Works with Architects and other Principals to drive technical direction while partnering effectively with Engineering Leads and managers
establishes cross-team mechanisms for collaboration (review forums, design clinics)
builds alignment through trust, clarity, and shared goals
Product & Domain Leadership: Develop deep understanding of the domain’s business, user journeys, and strategic goals
connect technical choices to measurable customer and business outcomes
Co-own the domain technical roadmap (12–24 months) with Product and Engineering leadership: Align investments to business priorities, platform strategy, security posture, reliability targets, and cost optimisation
Identify and sequence technical risk retirement (e.g., legacy decommissioning, resilience gaps, security debt)
Provide clear options and recommendations on buy vs build, integration patterns, and platform adoption—framing trade-offs in cost, risk, time, and maintainability
Contribute to vendor assessments and 3rd-party evaluations (integration, security posture, cost, operational fit)
Support product delivery teams to simplify complexity, make sound trade-offs, and deliver scalable solutions while minimising risk
Technical Excellence & Innovation: Sets and maintains a high technical bar across teams
ensures long-term viability and sustainability
Own the domain reference architecture and integration patterns across services, APIs, data stores, and events
Define domain boundaries (bounded contexts), service responsibilities, and integration patterns to reduce coupling and enable team autonomy
Work with other Principals to define, evolve, and govern domain technical standards and cross-functional requirements (security, reliability, observability, performance, compliance)
Work with Architect and other Principals to establish and maintain lightweight engineering governance: Architecture documentation (e.g., C4-style diagrams)
Architecture Decision Records (ADRs) and reference implementations
Domain design reviews for critical changes and high-risk systems
Create reusable libraries, templates, and frameworks ("golden paths") that accelerate teams and standardise best practices
Ensure solutions are secure by design, fault-tolerant, scalable, and maintainable
validate designs against NFR baselines and technical standards
Act as a primary technical point of contact for internal stakeholders (e.g., platform, security, data, operations) and—where relevant—external partners/vendors
Drive consistency in API design, event schemas, data ownership, and schema evolution strategies
Establish both data and code quality, test strategy, and review standards across teams
ensure maintainability and long-term sustainability
Promote and uphold secure coding standards, privacy-by-design, and compliance expectations in design and implementation
Maintain broad industry and company-wide technical knowledge, monitor trends and approaches
Operational Excellence: Define and drive adoption of SLIs/SLOs and operational dashboards for critical domain services
establish operational readiness expectations, error budgets (where used) and continuous reliability improvement
Lead or support major incident response as a technical incident leader
ensure blameless post-mortems and drive systemic fixes to closure
Establish reliability and resilience practices: Capacity planning, performance engineering, resilience testing (timeouts, retries, circuit breakers), and DR validation
Reduce operational risk and waste through automation, improved alerting, safer deployments, and toil reduction
Drive cloud cost optimisation (FinOps mindset) through architectural choices, usage analysis, and scalable patterns
Support teams in diagnosing and resolving complex production issues, including performance degradation and failure modes
Ensure observability coverage and operational readiness: metrics, logs, tracing, health checks, and meaningful alerting
Drive threat modelling and security reviews for domain-critical services
ensure remediation plans are executed

Requirements

Proven experience as a senior technical leader across multiple teams/services within a bounded domain
Strong polyglot background (e.g., C#/.NET, Java, JavaScript/Node) and ability to choose fit-for-purpose technologies
Experience modernising systems: migrating from legacy architectures to cloud-native patterns, reducing technical debt, and decommissioning safely
Experience in systems analysis, design and a solid understanding of development, quality assurance and integration methodologies
Experience developing integrated solutions within a broad technical and business context of significant impact
Experience evaluating third-party services and platforms (security, cost, operations, integration complexity)
Experience leading cross‑team architectural change, platform adoption, or measurable improvements to reliability/cost/performance (with before/after metrics)
Familiarity with responsible AI usage in engineering workflows (policy/guardrails, data privacy, human‑in‑the‑loop review)
Bachelor’s/Master’s degree in Computer Science (or related) or equivalent professional experience
Expert software design skills: SOLID, DDD, event-driven architecture patterns, modular design, and maintainable codebases
Strong engineering judgement in trade-offs: simplicity vs extensibility, performance vs cost, consistency vs availability
Distributed systems fundamentals: idempotency, retries/backoff, timeouts, circuit breakers, backpressure, eventual consistency, and data partitioning strategies
API and event design governance: versioning, schema evolution, backward compatibility, and contract testing
Design and delivery of secure, scalable, and resilient AWS-based solutions, including IAM, networking, integration patterns, reliability, and cost optimisation
Infrastructure-as-Code and immutable infrastructure concepts
automated environment provisioning
Secure architecture patterns & coding practices, threat modelling, and OWASP Top 10 & software supply chain security awareness
Strong testing strategy leadership: unit, integration, contract, performance, and security testing
TDD/BDD experience where appropriate
ensures testability and measurable coverage of critical paths
Observability and SRE principles, including SLIs/SLOs, operational readiness, incident response, and continuous reliability improvement
CI/CD pipelines, deployment safety patterns, source control, code review, and automation

What we offer

Comprehensive Health Insurance: Covers you, your immediate family, and parents
Enhanced Health Insurance Options: Competitive rates negotiated by the company
Group Life Insurance: Ensuring financial security for your loved ones
Group Accident Insurance: Extra protection for accidental death and permanent disablement
Flexible Working Arrangement: Achieve a harmonious work-life balance
Employee Assistance Program: Access support for personal and work-related challenges
Medical Screening: Your well-being is a top priority
Modern Family Benefits: Maternity, paternity, and adoption support
Long-Service Awards: Recognizing dedication and commitment
New Baby Gift: Celebrating the joy of parenthood
Subsidized Meals in Chennai: Enjoy delicious meals at discounted rates
Various Paid Time Off: Take time off with Casual Leave, Sick Leave, Privilege Leave, Compassionate Leave, Special Sick Leave, and Gazette Public Holidays

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Principal Software Engineer

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