Senior Software Engineer / Software Engineering Lead

OBJECTIVESWe are looking for a solution-driven Senior Software Engineer / Software Engineering Lead to join PMAX Tech & Data, responsible for owning backend architecture and execution for key platform modules, building scalable and secure systems, raising engineering quality, and helping modernise legacy services. You will be hands-on in delivery while also leading technical direction—covering the full lifecycle from discovery and design to implementation, release, observability, and continuous improvement.JOB DESCRIPTION1) Technical Ownership & Delivery LeadershipOwn end-to-end delivery for assigned backend domains (services, APIs, integrations), ensuring quality, performance, and reliability.Drive technical planning: break down requirements, propose implementation options, estimate effort, identify risks, and align milestones with stakeholders.Participate in sprint ceremonies and proactively shape backlog quality (testability, acceptance criteria, dependencies, non-functional requirements).2) Backend Architecture & API EngineeringDesign and develop scalable backend services and APIs (REST/GraphQL as applicable), ensuring clean architecture and maintainability.Define and maintain backend standards: service patterns, error handling, logging, versioning, and backwards compatibility.Implement core platform capabilities: RBAC/permissions, approval workflows, audit logs, notifications, job scheduling, and multi-tenant considerations (where applicable).3) Performance, Reliability & ObservabilityProfile and optimise bottlenecks across application and database layers (query optimisation, caching, async processing, pagination, indexing).Design for reliability: idempotency, retries, dead-letter strategies, graceful degradation, and rate limiting.Establish observability practices: structured logs, metrics, tracing, alerting, and operational dashboards; contribute to incident response and post-mortems.4) Data Integration, Migration & Platform ModernisationIntegrate multiple data sources and systems into a coherent backend (Ads platforms, CRM, internal tools, analytics pipelines).Own data migration and transformation initiatives: schema evolution, backfills, scripting, and reconciliation.Modernise legacy applications/services: refactor or re-architect modules with minimal business disruption, focusing on long-term scalability.5) Engineering Excellence & MentorshipWrite and enforce high-quality code practices: code reviews, testing strategy (unit/integration), CI/CD hygiene, and release readiness checklists.Provide technical guidance and mentorship to junior engineers; raise the bar on documentation and knowledge sharing.Contribute to engineering culture: pragmatic best practices, reusable libraries, design templates, and runbooks.6) Security & Compliance FundamentalsApply secure coding practices and ensure proper secrets management, access control, and auditability.Ensure backend designs align with privacy and data governance requirements (as relevant to PMAX client/partner data).JOB REQUIREMENTSSkill & QualificationsDegree in Information Technology or related field (or equivalent practical experience).3–5 years in Backend Engineering roles with proven track record shipping production systems.Strong proficiency in NodeJS (preferred) or strong backend experience in Python/Ruby/Java/Go/PHP with ability to ramp quickly on NodeJS.Strong knowledge of backend fundamentals: system design, software architecture, design patterns, clean code, and engineering best practices.Solid database expertise: data modelling, schema design, and performance tuning (SQL required; NoSQL is a plus).Experience designing and operating APIs at scale: authentication/authorisation, versioning, error contracts, rate limiting, and reliability patterns.Experience with cloud-based technologies and modern engineering practices (Git workflow, CI/CD, testing discipline, monitoring/alerting).Strong communication skills: able to explain technical concepts to non-technical business leaders and influence trade-offs.Strong strategic mindset and problem-solving skills; ability to operate under ambiguity and bring clarity.Plus / AdvantageExperience with event-driven architecture, queues, background workers, scheduling systems.Experience with observability stacks (APM, metrics, logs), SLO/SLI thinking, and incident management.Experience integrating with marketing/ads ecosystems (Meta, Google, TikTok, Shopee, Zalo) or martech stacks is a strong advantage.Familiarity with data pipelines, analytics instrumentation, and metric correctness is a plus.Prior experience as a technical lead for a small squad or mentoring juniors.Mindset & Soft SkillsOwnership and accountability for outcomes (not only tasks).Strong collaboration; able to challenge requirements constructively and propose better solutions.Comfortable operating in a fast-paced environment with ambiguity; disciplined in clarifying assumptions early.Curious, proactive, and continuously learning mindset.Comfortable exploring and adopting AI-assisted development tools (e.g., code copilots, test/documentation assistants) to improve productivity and quality, with strong discipline on verification, security, and correctness.PMAX-er IdentificationClient Impact: Everything we do is ultimately to deliver real client impact and value.Innovation: Drive change and innovative new ideas to create more value for clients, teams and society.People development: Attract, develop, and retain the most talented people. Development is a responsibility of both individuals and the organisation.Integrity: Be honest and show consistent adherence to what is right, even at our own cost.Teamwork and fun: Collaborative effort to achieve common goals while building a joyful and enjoyable atmosphere.Extreme ownership: Own outcomes end-to-end. Think like an owner of the company, responsible for what affects success.BENEFITSCompetitive salary range with quarterly & yearly incentives and 13th-month salaryFlexible working time with 2 days working from home per week and 15 paid leaves per yearInsurance as full salary (SHUI)Annual health check-up and Healthcare Insurance VNI for all employeesLaptop allowance or support for laptop purchase costs on an individual basisInternal training & career development opportunities, and external L&D budget sponsorshipTeam bonding budget quarterly, snack time to engage team membersQuarterly, Yearly Recognition Gifts & Awards and gifts on special occasions (birthday, New year...)Holiday activities; Company trip; Year End Party; Company Birthday; Culture Day; Quarterly Town HallOther staff welfare allowances.