Tongston is a multi-award-winning global brand focused on entrepreneurial education, enterprise, finance and media leveraging on technology for people, institutions & governments to drive global sustainable socio-economic development.
We are recruiting to fill the position below: Job Title: Full Stack Engineer
Location: Abuja Employment Type: Full-time
Job Summary
Tongston is seeking a Full Stack Engineer (Back-End Focus) to help build and scale T-World and the product backend for T-Cell as a standalone AI product.
T-Cell may serve T-World and approved external applications or institutions through defined interfaces.
This role covers T-Cell, T-World and other current and future Tongston products, services and approved integrations, as assigned within its remit.
This role is ideal for a backend-leaning engineer who can own APIs, data models, integrations, reliability, and application connections to AI serviceswhile remaining comfortable delivering lightweight React web UI when needed to support product flows and internal tools.
You will Participate in Agile ceremonies: planning, execution, review, and iteration.
Roles and Responsibilities Back-End & Architecture (Primary):
Build and maintain server-side services and APIs using Node.js and Express
Design, implement, and optimize MongoDB schemas, indexes, and query patterns
Own backend integrations including:
Authentication (Firebase)
Media storage (Cloudinary, AWS S3)
Environment configuration and secrets management
Logging and monitoring
Define modular product service boundaries for T-World and standalone T-Cell. Keep T-Cell’s accounts, organisation configuration, access controls and application APIs independent of T-World-specific widgets or database structures, while reusing appropriate shared Technology services.
Ensure backend reliability, performance, and scalability
Implement T-Cell product APIs, authorised client integrations, user/organisation isolation, configuration and usage records as required by approved scope. Define contracts for context, permitted actions, structured outputs and errors with AI Engineering.
Implement deterministic product validations, calculations and workflow rules in application services. Enforce permissions and validate all requested writes or actions even when they originate from an AI agent.
Front-End Support (Secondary):
Ship or support React components required to validate backend APIs, AI flows, or admin/internal tooling
Collaborate with frontend engineers to ensure clean API contracts and smooth UI backend interactions
Maintain code quality via pull requests, documentation, and shared standards
AI Enablement:
Integrate Technology-owned interfaces and application APIs with the T-Cell AI services supplied by AI Engineering, including connections to T-World and approved external systems.
Support AI-powered experiences such as:
Assistants
Search
Content generation
Ensure safe and reliable AI integrations, including:
Error handling and fallbacks
Latency and timeout management
Rate limiting and caching
Storage, access controls and release support for versioned prompts and configurations; Data owns prompt creation and optimisation, and AI Engineering owns runtime prompt assembly
Traceable outputs for debugging and evaluation
Provide shared observability, controlled test environments and traceable API responses for Data’s evaluation and Education’s output review. Own interface/API, access-control, data-isolation and application reliability tests; AI Engineering owns agent, retrieval and model execution tests.
Delivery, Security & Operations:
Support CI/CD pipelines using GitHub Actions
Follow secure practices for:
Secrets and key management
Access control and offboarding hygiene
Build and maintain the application deployment, monitoring and operational arrangements for T-World and standalone T-Cell, coordinating infrastructure work with the Technology team and deploying AI packages supplied by AI Engineering.
Knowledge, Skills & Attitude Requirements Technical Knowledge & Skills:
Strong experience with Node.js and backend design patterns
Strong experience with MongoDB (schema design, indexing, aggregation, performance tuning)
Solid working knowledge of Express.js
Comfort working with React for integration-level UI tasks
Familiarity with REST APIs, server-side architecture, and environment configuration
Soft Skills & Attitude:
Strong analytical and problem-solving skills
Clear communication and collaboration across teams
Ability to prioritize, execute, and deliver with attention to detail
Ownership mindset and comfort working in a fast-paced environment
Strong alignment with Tongston’s mission, values, and culture. Learn more about Tongston’s culture: https://tongston.com/about
Nice-to-Have Knowledge & Skills:
Exposure to AI integrations (LangChain or similar)
Familiarity with Web3 integration workflows (wallets, signing, token flows)
Experience with background jobs, queues, or serverless patterns
Exposure to cloud infrastructure (AWS)
Core Stack Back-End (Primary Focus)
Node.js with Express (API services / serverless routes where applicable)
MongoDB (Atlas & Compass)
Front-End (Supportive)
React (Web)
Vite
Tailwind CSS
State & data: TanStack Query, Zustand
Platform & Infrastructure
Authentication: Firebase (synced with MongoDB)
Storage:
Cloudinary (short-term media handling)
AWS S3 (long-term storage with immediate migration )
CI/CD: GitHub Actions
Security: CodeQL, Dependabot, basic OWASP-aligned practices
Service Integration Knowledge
Working awareness of AI orchestration frameworks and service contracts; AI Engineering owns the agent runtime and orchestration implementation
Integration with approved AI service APIs; Data owns prompt content and AI Engineering owns model execution
Web3 (Exposure-Level)
Wallets, signing flows, token interactions-conversion
On-chain vs off-chain boundaries (Deep smart contract development is not required)
What You’ll Get
Monthly gross professional fee of N200,000 per month.
A monthly Remote Productivity Support Package.
Monthly data support.
A company-provided laptop and access to Tongston-funded platforms, software, licensed tools and other approved resources required to perform the role effectively, subject to approval and availability.
Pathway to full-time employment opportunity to secure additional benefits, including pension, HMO, statutory employee leave categories, promotion-based entitlements, and staff welfare benefits. See our Careers page for more info.
Exposure to full-stack software engineering with emphasis on back-end development, API architecture, database design, AI workflow integration, React web development, cloud infrastructure, authentication, DevOps practices, Web3 integration, secure software development, and cross-functional delivery across Tongston’s Enterprise, Media, Finance and Entrepreneurial Education pillars.
Team-based execution and support, including an overall project management structure, reporting to a line manager, and collaboration within a sprint-based team workflow with defined weekly deliverables.
A structured learning and growth pathway supported through twice-yearly performance review, development and growth conversations (January & July). If you join after a review cycle, your first review will take place in the next review window. The review helps you document and communicate how you’ve grown, developed and demonstrated being Valuable, Influential & Profitable.
Learning & Development Budget: NGN350,000 to support continuous upskilling, role-specific learning and broader professional development subject to the applicable Terms and Conditions, internal guidelines and approvals.
Up to 10 working days of approved paid time away from active delivery annually.
Eligible for the Tongston Annual Personnel High Performance Award which comes with cash prizes and certificates you can include in your profile for future jobs.
Professional Visibility: listed on Tongston’s website.
Complimentary premium access to T-World, Tongston’s integrated digital platform. Learn more at t-world.tongston.com
Eligibility for discretionary performance-based bonus/allocation
Participation in Tongston Academy sessions (scheduled periodically):
Personal branding (includes CV/LinkedIn review)
Personal finance & investing
Sales, communication & networking
Business development & strategy
Project management, Cybersecurity awareness & Digital automation tools