Senior Database Engineer
Location
Nigeria
Posted
1 day ago
Salary
0
Seniority
Senior
Job Description
Senior Database Engineer
Heirs Technologies
Role Description As a Senior Database Engineer, you will design, build, and operate the data infrastructure that sits at the heart of this platform. You will own both the relational and distributed NoSQL database layers — ensuring they are highly available, performant, secure, and built to scale to hundreds of millions of users without architectural rework. - Database Engineering & Design — Own the design, provisioning, and ongoing engineering of the platform's database infrastructure across both relational and distributed NoSQL layers. - Relational Database Engineering — Own the platform's PostgreSQL deployments across Azure Database for PostgreSQL and Amazon RDS/Aurora. - Distributed & NoSQL Engineering — Own the platform's Apache Cassandra deployments across Azure Managed Instance for Apache Cassandra and Amazon Keyspaces. - High Availability & Disaster Recovery — Design and maintain highly available database configurations across both clouds. - Cross-Cloud Data Replication & Active-Active Architecture — Design, implement, and continuously validate real-time data replication between the platform's AWS and Azure database environments. - Performance Engineering — Own database performance end to end — from schema design to query execution. - Database Security & Compliance — Enforce database security standards across all environments. - Database as Code — Provision and manage all database infrastructure through version-controlled Infrastructure as Code. - Migration & Schema Change Management — Design and execute zero-downtime database migrations and backward-compatible schema changes. - Observability & Monitoring — Instrument all database layers with the metrics, alerting, and logging needed to provide complete visibility into database health. - Developer Enablement — Partner with application engineering teams to establish and enforce data modelling standards. Qualifications - 5+ years of hands-on database engineering experience in a production, cloud-native environment. - Expert-level PostgreSQL experience — schema design, advanced indexing, query optimisation, table partitioning, replication, and performance tuning. - Strong Apache Cassandra experience — data modelling, partition key design, consistency level configuration, compaction tuning, and cluster operations. - Hands-on experience with cloud-managed database services — Azure Database for PostgreSQL, Amazon RDS/Aurora, Azure Managed Instance for Apache Cassandra, and/or Amazon Keyspaces. - Solid understanding of database security — encryption at rest and in transit, IAM-based access controls, audit logging, and compliance requirements. - Experience provisioning and managing database infrastructure as code — Terraform, Ansible, and Bash. - Proven experience designing and executing zero-downtime database migrations and backward-compatible schema changes. Requirements - Experience with Redis for caching — configuration, eviction policies, cluster mode, and integration with application services. - Familiarity with event-driven architecture patterns — including event sourcing, CQRS, and the data modelling considerations they introduce. - Experience in fintech, banking, or a regulated data environment. - AWS and/or Microsoft Azure database certifications. - Experience with database observability tooling — slow query analysis, execution plan visualisation, and replication monitoring at scale. - Familiarity with data residency and cross-border data transfer requirements across African markets. Benefits - Impactful work — you'll own the data infrastructure of a platform built to serve hundreds of millions of Africans. - World-class team — you'll work alongside engineers, architects, and security specialists from some of the best organisations on the continent and globally. - Modern ways of working — cloud-native, IaC-first, and built on a dual-cloud (AWS + Azure) foundation. - Lagos, Nigeria — based at our Lagos office, at the heart of Africa's most dynamic technology ecosystem. How to Apply To apply, please use the link provided in the job posting. Applications are managed through our recruitment platform and reviewed on a rolling basis.
Related Guides
Related Categories
Related Job Pages
More Engineer Jobs
• Design, simulate, and validate **electronic circuits** using **Qucs-S** • Develop and optimize **analog, digital, or mixed-signal** circuit designs • Analyze simulation results and troubleshoot design or performance issues • Collaborate with engineering teams to translate technical requirements into practical solutions • Optimize designs for **performance**, reliability, and manufacturability • Produce clear **technical documentation** and engineering reports • Participate in technical reviews and share best practices for Qucs-S simulation • Stay up to date with Qucs-S developments and emerging electronic design techniques
Electronic Engineer (Qucs-S Circuit Simulation)
Gramian Consulting GroupGramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs.
Role Description We are looking for an experienced Electronic Engineer with strong expertise in Qucs-S, electronic circuit design, and simulation. In this role, you will: - Design, simulate, and validate electronic circuits using Qucs-S - Develop and optimize analog, digital, or mixed-signal circuit designs - Analyze simulation results and troubleshoot design or performance issues - Collaborate with engineering teams to translate technical requirements into practical solutions - Optimize designs for performance, reliability, and manufacturability - Produce clear technical documentation and engineering reports - Participate in technical reviews and share best practices for Qucs-S simulation - Stay up to date with Qucs-S developments and emerging electronic design techniques Qualifications - Bachelor's or Master's degree in Electronic Engineering or a related field - Experience with Qucs-S for circuit simulation - Experience designing and validating electronic circuits - Strong understanding of analog, digital, or mixed-signal electronics - Experience troubleshooting and optimizing electronic designs - Excellent written and verbal English communication skills - Experience creating technical documentation - Ability to work independently in a remote environment Requirements - CONTRACT: Contractor - COMMITMENT: Hourly/Part-time - LOCATION: Remote - PROCESS: Application Form -> AI Interview -> Selection - HOURLY RATE: $30 - $120/h - NOTES: Hands-on experience with Qucs-S is mandatory.
Price Study Engineer - Electricity
EquansEQUANS France garantit l’égalité des chances pour tous et la diversité. EQUANS France promeut la diversité et s’engage à lutter contre toute forme de discrimination dans nos environnements de travail. L’insertion, la mixité, le soutien et l’accompagnement des jeunes, des seniors, des personnes en situation de handicap sont au cœur de notre politique ressources humaines. Plus de 35 500 collaborateurs contribuent à l’aventure EQUANS France Répartis dans plus de 700 agences sur l’ensemble du territoire français et aussi à l’international L’exigence et la bienveillance sont au cœur de notre culture de la performance Nos équipes sont engagées pour accompagner leurs clients dans leurs transitions énergétique, industrielle et numérique Experts dans 7 domaines : Génie électrique, Génie climatique, Réfrigération, Sécurité Incendie, IT & télécommunications, Solutions digitales et Facility Management / Maintenance multi-technique EQUANS France atteint un chiffre d’affaires de 6,8 Mds d’euros
Role Description Ingénieur Études de Prix Électricité (H/F) Vous aimez analyser des projets complexes, proposer les meilleures solutions techniques et jouer un rôle clé dans la conquête de nouveaux marchés ? Rejoignez INEO, entité d'EQUANS France, et participez au développement de projets industriels et infrastructures en Île-de-France, sur des affaires pouvant atteindre 5 M€. Au sein d'une équipe de 5 collaborateurs, vous intervenez sur l'ensemble du processus d'étude, de l'analyse du besoin jusqu'à la remise de l'offre. Votre rôle : - Vous prenez en charge les dossiers d'appels d'offres et êtes garant(e) de la qualité technique et financière de vos études. - Analysez les DCE, plans, schémas électriques, CCTP et CCAP. - Identifiez les risques techniques, contractuels et financiers des projets. - Réalisez les études électriques et définissez les solutions adaptées. - Établissez les métrés, quantitatifs et prix de revient. - Consultez les fournisseurs et analysez leurs offres. - Préparez les mémoires techniques et les dossiers de réponse. - Proposez des optimisations et variantes techniques. - Réalisez ponctuellement des visites de site afin de mieux comprendre les besoins clients. - Participez occasionnellement aux soutenances commerciales. - Assurez le transfert des dossiers aux équipes travaux. Vous intervenez sur 1 à 2 affaires par mois, pour des projets compris entre 100 K€ et 5 M€, dans les secteurs de l'industrie, du transport et des infrastructures. Qualifications - Issu(e) d'une formation en génie électrique. - Expérience réussie en études de prix, chiffrage ou gestion d'affaires dans le domaine de l'électricité. - À l'aise avec l'analyse de dossiers d'appels d'offres publics et privés. - Lecture de plans et schémas électriques (notamment unifilaires). - Environnements HTA/BT, contrôle-commande et installations industrielles. - Structuration de votre réflexion pour construire des offres fiables et compétitives. Requirements - Personne rigoureuse, autonome et communicante. - Capable d'alerter lorsqu'elle rencontre une difficulté. - Travail en proximité avec les équipes opérationnelles. Benefits - 13e mois. - Variable individuel et collectif (participation, intéressement). - 15 RTT. - Remboursement du Pass Navigo à 100%. - Tickets Restaurant 12€ dont 60% à la charge de l'entreprise. - Prime vacances (Caisse du BTP). - Plan d'Épargne Groupe. - Avantages CSE (loisirs, voyages, billetterie, chèques-vacances...). - Parcours d'intégration et accompagnement dans votre prise de poste. - Opportunités de mobilité au sein du Groupe Bouygues.
Role Description Our subsidiary (Nabeh) is seeking a passionate Quality, Senior Engineer to join our growing AI Quality Engineering team and contribute to delivering high-quality AI-powered and enterprise digital solutions. - Test planning, test design, and test case development. - Functional, System, Integration, Regression, and UAT testing. - Defect lifecycle management and root cause analysis. - Test reporting, quality metrics, and release validation. - API Testing (Postman, Swagger, REST Assured). - Database Testing and SQL validation. - Test Automation using Selenium, Playwright, Robot Framework, SHAFT Engine, or Cypress. - Performance Testing using JMeter, Locust, Gatling, or k6. - Experience in AI evaluation (AI Evals), benchmarking, and validating Large Language Model (LLM) responses against defined quality metrics and acceptance criteria. Qualifications - Bachelor's degree in Computer Science, Software Engineering, Information Technology. (Mandatory) - ISTQB CTFL. (Mandatory) - ISTQB Advanced Level is a plus. Requirements - 3–6+ years of Software Quality Assurance experience. - 3+ years of hands-on Test Automation experience. (Mandatory) - Experience working in Agile/Scrum environments. - Experience testing AI-enabled applications, Generative AI, LLMs, or data-driven platforms is highly preferred. - Knowledge of AI response validation, prompt testing, and data quality is a plus. - CI/CD knowledge (Azure DevOps, Jenkins, GitHub Actions is a plus). Skills - Exceptional analytical and critical thinking skills with the ability to identify complex issues, evaluate solutions, and make data-driven quality decisions. Language & Work Arrangement - Native Arabic Speaker. (Mandatory) - Fluent in English (Written & Spoken). - Remote position with availability during Saudi Arabia business hours (AST – UTC+3). Job Location Remotely
