{"id":3475780,"url":"https://alion.io/job/escrow-tech-principal-distributed-systems-engineer","title":"Principal Distributed Systems Engineer","company":{"id":4487170,"name":"Escrow Tech","domain":"escrow-tech.co.uk","url":"https://alion.io/company/escrow-tech","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lagos, Nigeria"],"countries":["NG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":13000,"max_usd":39000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2257},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Docker","optional":false},{"name":"K3s","optional":false},{"name":"Kubernetes","optional":false},{"name":"MQTT","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-09-30T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-09-30T00:00:00Z","board_verified":false,"closed_at":null,"days_open":30,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":30},"description":"Principal Distributed Systems EngineerCompany: Escrow-Tech\nLocation: Hybrid - minimum 50% on-site in Lagos\nJob Type: Independent Retainer - Milestone-Based Deliverable Contract\nDuration: July 2026 - December 2026\nAbout the RoleThe successful candidate will help architect and own the systems behind a sovereign cloud and distributed edge compute network, including a compute workload exchange designed to manage concurrent resource bids, infrastructure constraints, billing records and distributed compute capacity.\nYou will work across algorithmic optimisation, Python backend engineering, PostgreSQL security, cryptography, Kubernetes/k3s and edge orchestration.\nKey ResponsibilitiesDesign and implement a multi-threaded Mixed-Integer Linear Programming (MILP) optimisation engine capable of evaluating compute resource bids against constraints such as power, thermal limits, SLA priorities, processor states and cooling capacity\nBuild an append-only, tamper-evident transaction ledger using SHA-256 hash chaining to track resource allocation, billing events and energy-curtailment credits, with integrity verification and tamper-detection mechanisms\nDesign and deploy advanced PostgreSQL Row-Level Security (RLS) policies to enforce strict multi-tenant data isolation at the database layer\nDevelop the orchestration backend that aggregates distributed edge compute nodes, identifies available capacity and coordinates workload distribution, encryption, execution and result return\nDuring final execution phase, work with local team in Lagos to deploy production-ready systems, conduct load testing and lead architectural handover sessions\nRequirementsStrong experience in distributed systems and high-throughput backend architecture\nPython backend engineering and performance-critical data pipelines experience\nAdvanced PostgreSQL and multi-tenant database architecture experience\nExperience with Kubernetes, k3s, Docker and cloud infrastructure\nExperience with MILP and mathematical optimisation\nExperience in quantitative engineering, operational research or resource allocation\nExperience with cryptographic and tamper-evident data structures\nKnowledge of SHA-256 and data-integrity verification\nExperience with distributed edge/IoT orchestration\nExperience with MQTT and IoT data pipelines\nTechnical documentation and architecture handover experience\nExperience in quantitative trading infrastructure, operational research platforms, high-throughput fintech systems or large-scale SaaS multi-tenancy is particularly relevant\nHow to apply: 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