Senior Backend Engineer - Data Platform

Top 3 Reasons To Join Us Attractive Salary and Benefits Amazing Clients Product driven company The Job Job Summary: You'll own how the Orange Logic platform runs on PostgreSQL - the performance, scalability, and reliability of the database layer at the heart of our product. You'll join one of our Platform development teams and take strong ownership of execution. Specifically, you will: Own how our platform interacts with PostgreSQL: query and index design, schema design and versioned migrations, transaction and connection management, and continuous performance optimization. Design for scale — apply the right patterns (replication, partitioning, read distribution, connection pooling) to keep the database fast and reliable as load and tenancy grow. Make PostgreSQL reliable and reusable across the platform: running on Kubernetes, provisioned through infrastructure-as-code, and consumed cleanly by other engineering teams. Take on other high-priority platform work when it outranks the database stream. This is a platform engineering role, not a single-track one. Deliver well-tested, PR-quality work and review others', with AI coding agents as a core part of how you work. Your Skills and Experience The most successful candidates for this role will have: Required: Production experience with PostgreSQL — query optimization, EXPLAIN/ANALYZE, indexing, schema design, and diagnosing performance at the application boundary. Proven experience operating PostgreSQL at scale in production — multi-terabyte databases, sustaining thousands of transactions per second, and scaling read capacity with auto-scaling replicas — plus command of the patterns and tradeoffs behind it: partitioning, read distribution, replication/failover, and connection pooling options. 5+ years of professional backend engineering. Comfort in Kubernetes environments and with infrastructure-as-code. You're infra-aware, not a DBA. Demonstrated ability to use AI coding agents for feature- and bugfix-level work across a codebase — context preparation, agent direction, implementation review, testing, and PR-quality delivery. A track record of taking ownership and shipping under your own direction. Professional English, written and verbal — you'll work closely with our US-based teams. Bachelor's degree in a relevant field (Computer Science, Information Technology, or similar). A strong plus: Building internal platform or self-service capabilities — database-as-a-service, golden paths, and the telemetry/observability that makes them self-serve (metrics, slow-query insight, health and performance signals). Working within or extending a custom data-access layer or ORM internals. Experience with C#/.NET — our platform's stack. Why You'll Love Working Here You would love to work and find those values with us: Distributed decision making: We also allow each employee to directly weigh in on our priorities. Transparency: We value transparency, openness, and accountability, whether it is with our customers or internally. Meritocracy: Employee's recognition and advancement is based purely on their individual and collective achievements. Deep work: We do everything we can to let you focus deeply on your work. Our benefits include: Attractive salary package. 100% Gross Salary in the probation period. 13th-month salary. 18 days of annual leaves (cashback allowed if not used). 4 days for an overseas company trip. Multiple allowances (Lunch, Gym, Parking, Birthday/Tet/Wedding voucher... ). Full social, health, and unemployment insurance. Premium healthcare insurance for you and coverage for 1 extra family member. Monthly team-building activities (Bowling, Go-Kart, Candle Handmade workshop....) and special celebrations on Autumn Festival, Halloween, Christmas, Tet, … Monthly happy lunch and daily happy hours with free snacks, soft drinks, fruit, and coffee. Sports activities (PlayStation 5, Badminton, Football,...) Data Privacy Notice for Candidates in Vietnam: By submitting your application, you acknowledge that you have read and understood Keystone AI’s Privacy Policy. Any consent provided herein is explicit and voluntary. Based on your consent, Keystone AI will process your personal data for recruitment for the position you apply for, including evaluating your candidacy, communicating with you, and, where applicable, verifying relevant information as part of the selection process. If you would like Keystone AI to consider you for future suitable roles, we will request your separate, explicit consent and you may withdraw consent at any time as described in the Privacy Policy. For details on how we handle your information, please refer to our Privacy Policy on OLVN Website. Please be aware: Orange Logic only communicates with candidates through official @orangelogic.com email addresses or via LinkedIn from a verified Orange Logic Talent Acquisition employee listed under “Meet the Hiring Team.” We do not conduct interviews via text message or request payment or equipment purchases at any stage of the hiring process.