Backend Architect - Ontology + Python + AI/ML - Afternoon

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    "description_html": "<p><strong>Company Overview </strong></p><p>10Pearls is a global, purpose-driven <a href=\"https://10pearls.com/artificial-intelligence/\">AI-Native digital engineering partner</a> helping businesses re-imagine, ‎digitalize, and accelerate. As an end-to-end digital technology partner, 10Pearls helps businesses create future-proof, ‎transformative ‎digital products that leverage emerging technologies. ‎10Pearls' clients ‎include Global 2000 enterprises, high growth mid-size ‎businesses, and some of the most exciting ‎start-ups from industries like healthcare, fintech, ‎energy, education, ‎real estate, retail, and hi-tech. ‎Headquartered in the Washington DC metro area, 10Pearls has <a href=\"https://10pearls.com/software-development/\">product engineering and ‎software development</a> centers in North America, Latin America, Europe, and South Asia. To learn more, visit <a href=\"https://10pearls.com/\">https://10pearls.com</a>. </p><p><b>Role</b></p><p>We are seeking a Backend Architect to lead the design and evolution of a next-generation AI-native platform (AIX), with a primary focus on the Ontology Layer (L3)—the semantic core of the system. This role requires strong architectural ownership and hands-on expertise in building scalable, secure, and multi-tenant backend systems. The ideal candidate will define data models, API contracts, and cross-layer communication patterns while collaborating closely with product, architecture, and engineering teams in an onsite environment in Islamabad. </p><p><b>Responsibilities:</b></p><p>• Ontology backend architecture — design the multi-tenant PostgreSQL schema (object_types, link_types, object_properties, tool_catalog, action_proposals, audit_events) including Row-Level Security and indexing strategy<br>• GraphQL API surface — architect the Strawberry-GraphQL API for reads, mutations and subscriptions, and define resolver patterns for tenant isolation and authorisation<br>• Action Registry & governance — own the propose → simulate → approve → execute state machine, blast-radius classification, dual-approval workflow, and SHA-256 binding hash for approval proofs<br>• Cross-layer contracts — define the contracts between L2 (data plane), L3 (ontology), L4 (agent runtime) and L5 (governance) — Kafka topic schemas, MCP Truth API, event formats<br>• Code ownership — write the reference implementation for at least one core module per quarter; review backend PRs; set coding, testing and observability standards<br>• Mentorship — technically lead a squad of 3–5 backend engineers, pair-program with juniors, run design reviews and architecture decision record (ADR) sessions<br>• Performance & reliability — set and defend SLOs for L3 services, drive load-testing and capacity planning</p><p><b>Requirements:</b></p><p>• 5–8 years building production backend systems in Python (FastAPI, SQLAlchemy, AsyncIO) or equivalent<br>• Deep hands-on PostgreSQL: schema design, query optimisation, RLS, pgvector, migrations<br>• Strong API design skills — GraphQL (Strawberry, Apollo, Hasura) or REST at scale<br>• Experience with event-driven architectures using Kafka or equivalent (topic design, exactly-once semantics, consumer groups)<br>• Proven experience owning architecture for a multi-tenant SaaS or platform product<br>• Strong grasp of distributed-system fundamentals: consistency, idempotency, observability, failure modes<br>• Kubernetes-native development: containers, health probes, config-as-code, secret management<br>• Excellent written communication — ADRs, design docs, API specs</p><p><b>Nice to have:</b></p><p>• Prior work on policy-as-code (OPA / Rego) or ABAC authorisation frameworks<br>• Experience with audit-chain / tamper-evident systems or regulated-industry compliance<br>• Exposure to LLM-powered agent platforms or tool-use systems<br>• Experience designing for air-gapped or on-premises deployment<br>• Contribution to an open-source backend framework or data-platform project</p>",
    "description_text": "Company Overview\n 10Pearls is a global, purpose-driven  AI-Native digital engineering partner  helping businesses re-imagine, ‎digitalize, and accelerate. As an end-to-end digital technology partner, 10Pearls helps businesses create future-proof, ‎transformative ‎digital products that leverage emerging technologies. ‎10Pearls' clients ‎include Global 2000 enterprises, high growth mid-size ‎businesses, and some of the most exciting ‎start-ups from industries like healthcare, fintech, ‎energy, education, ‎real estate, retail, and hi-tech. ‎Headquartered in the Washington DC metro area, 10Pearls has  product engineering and ‎software development  centers in North America, Latin America, Europe, and South Asia. To learn more, visit  https://10pearls.com .\n Role\n We are seeking a Backend Architect to lead the design and evolution of a next-generation AI-native platform (AIX), with a primary focus on the Ontology Layer (L3)—the semantic core of the system. This role requires strong architectural ownership and hands-on expertise in building scalable, secure, and multi-tenant backend systems. The ideal candidate will define data models, API contracts, and cross-layer communication patterns while collaborating closely with product, architecture, and engineering teams in an onsite environment in Islamabad.\n Responsibilities:\n • Ontology backend architecture — design the multi-tenant PostgreSQL schema (object_types, link_types, object_properties, tool_catalog, action_proposals, audit_events) including Row-Level Security and indexing strategy\n• GraphQL API surface — architect the Strawberry-GraphQL API for reads, mutations and subscriptions, and define resolver patterns for tenant isolation and authorisation\n• Action Registry & governance — own the propose → simulate → approve → execute state machine, blast-radius classification, dual-approval workflow, and SHA-256 binding hash for approval proofs\n• Cross-layer contracts — define the contracts between L2 (data plane), L3 (ontology), L4 (agent runtime) and L5 (governance) — Kafka topic schemas, MCP Truth API, event formats\n• Code ownership — write the reference implementation for at least one core module per quarter; review backend PRs; set coding, testing and observability standards\n• Mentorship — technically lead a squad of 3–5 backend engineers, pair-program with juniors, run design reviews and architecture decision record (ADR) sessions\n• Performance & reliability — set and defend SLOs for L3 services, drive load-testing and capacity planning\n Requirements:\n • 5–8 years building production backend systems in Python (FastAPI, SQLAlchemy, AsyncIO) or equivalent\n• Deep hands-on PostgreSQL: schema design, query optimisation, RLS, pgvector, migrations\n• Strong API design skills — GraphQL (Strawberry, Apollo, Hasura) or REST at scale\n• Experience with event-driven architectures using Kafka or equivalent (topic design, exactly-once semantics, consumer groups)\n• Proven experience owning architecture for a multi-tenant SaaS or platform product\n• Strong grasp of distributed-system fundamentals: consistency, idempotency, observability, failure modes\n• Kubernetes-native development: containers, health probes, config-as-code, secret management\n• Excellent written communication — ADRs, design docs, API specs\n Nice to have:\n • Prior work on policy-as-code (OPA / Rego) or ABAC authorisation frameworks\n• Experience with audit-chain / tamper-evident systems or regulated-industry compliance\n• Exposure to LLM-powered agent platforms or tool-use systems\n• Experience designing for air-gapped or on-premises deployment\n• Contribution to an open-source backend framework or data-platform project",
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      "description": "<p><strong>Company Overview </strong></p><p>10Pearls is a global, purpose-driven <a href=\"https://10pearls.com/artificial-intelligence/\">AI-Native digital engineering partner</a> helping businesses re-imagine, ‎digitalize, and accelerate. As an end-to-end digital technology partner, 10Pearls helps businesses create future-proof, ‎transformative ‎digital products that leverage emerging technologies. ‎10Pearls' clients ‎include Global 2000 enterprises, high growth mid-size ‎businesses, and some of the most exciting ‎start-ups from industries like healthcare, fintech, ‎energy, education, ‎real estate, retail, and hi-tech. ‎Headquartered in the Washington DC metro area, 10Pearls has <a href=\"https://10pearls.com/software-development/\">product engineering and ‎software development</a> centers in North America, Latin America, Europe, and South Asia. To learn more, visit <a href=\"https://10pearls.com/\">https://10pearls.com</a>. </p><p><b>Role</b></p><p>We are seeking a Backend Architect to lead the design and evolution of a next-generation AI-native platform (AIX), with a primary focus on the Ontology Layer (L3)—the semantic core of the system. This role requires strong architectural ownership and hands-on expertise in building scalable, secure, and multi-tenant backend systems. The ideal candidate will define data models, API contracts, and cross-layer communication patterns while collaborating closely with product, architecture, and engineering teams in an onsite environment in Islamabad. </p><p><b>Responsibilities:</b></p><p>• Ontology backend architecture — design the multi-tenant PostgreSQL schema (object_types, link_types, object_properties, tool_catalog, action_proposals, audit_events) including Row-Level Security and indexing strategy<br>• GraphQL API surface — architect the Strawberry-GraphQL API for reads, mutations and subscriptions, and define resolver patterns for tenant isolation and authorisation<br>• Action Registry & governance — own the propose → simulate → approve → execute state machine, blast-radius classification, dual-approval workflow, and SHA-256 binding hash for approval proofs<br>• Cross-layer contracts — define the contracts between L2 (data plane), L3 (ontology), L4 (agent runtime) and L5 (governance) — Kafka topic schemas, MCP Truth API, event formats<br>• Code ownership — write the reference implementation for at least one core module per quarter; review backend PRs; set coding, testing and observability standards<br>• Mentorship — technically lead a squad of 3–5 backend engineers, pair-program with juniors, run design reviews and architecture decision record (ADR) sessions<br>• Performance & reliability — set and defend SLOs for L3 services, drive load-testing and capacity planning</p><p><b>Requirements:</b></p><p>• 5–8 years building production backend systems in Python (FastAPI, SQLAlchemy, AsyncIO) or equivalent<br>• Deep hands-on PostgreSQL: schema design, query optimisation, RLS, pgvector, migrations<br>• Strong API design skills — GraphQL (Strawberry, Apollo, Hasura) or REST at scale<br>• Experience with event-driven architectures using Kafka or equivalent (topic design, exactly-once semantics, consumer groups)<br>• Proven experience owning architecture for a multi-tenant SaaS or platform product<br>• Strong grasp of distributed-system fundamentals: consistency, idempotency, observability, failure modes<br>• Kubernetes-native development: containers, health probes, config-as-code, secret management<br>• Excellent written communication — ADRs, design docs, API specs</p><p><b>Nice to have:</b></p><p>• Prior work on policy-as-code (OPA / Rego) or ABAC authorisation frameworks<br>• Experience with audit-chain / tamper-evident systems or regulated-industry compliance<br>• Exposure to LLM-powered agent platforms or tool-use systems<br>• Experience designing for air-gapped or on-premises deployment<br>• Contribution to an open-source backend framework or data-platform project</p>",
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