API Developer/IT Officer
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A reputable and growing microfinance bank in Lagos is hiring an API Developer/IT Officer to co-manage API gateways, author OpenAPI specifications, build mock servers, and provide technical oversight of vendor API delivery. The role requires 5 years of mid-level experience, a degree, and full-time availability.
- Mid-level role requiring 5 years of experience and a degree
- Full-time position based in Lagos, Nigeria
- Salary range NGN 600,000 – 900,000
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A reputable and growing microfinance bank in Lagos is hiring an API Developer/IT Officer to co-manage API gateways, author OpenAPI specifications, build mock servers, and provide technical oversight of vendor API delivery. The role requires 5 years of mid-level experience, a degree, and full-time availability.
- Mid-level role requiring 5 years of experience and a degree
- Full-time position based in Lagos, Nigeria
- Salary range NGN 600,000 – 900,000
- Focus on API gateway management, vendor oversight, and technical acceptance testing
- English language requirement; working hours 8 to 5
AI job guide
Use this guide to check salary signals, requirements, documents, application steps and safety before you apply.
AI salary guide
Source salary availableThe source lists NGN 600,000 - 900,000. Confirm the final pay, benefits, contract terms and allowances directly with the employer before accepting an offer.
Can you qualify for this role?
- Required5+ years of relevant experienceThe job post includes a minimum experience signal.
- RequiredEducation or certification mentioned in the postThe captured text mentions education, a diploma, certificate, or licence.
- PreferredPractical evidence in security, call_center, internshipThe tags and summary point to skills connected with this role.
- RequiredAvailability to work in LagosThe vacancy is associated with this location.
- UnclearComfort with the Full Time contract termsConfirm hours, duration, probation and benefits at the original source.
Documents to prepare
- Likely requiredUpdated CV
- Role specificCover letter or short employer message
- OptionalProfessional references
- Role specificAcademic or professional certificates
- VerifyID or passport only after verifying the employer
Application tips for this job
- Place your strongest API Developer/IT Officer evidence in the first half of your CV.
- In your cover letter or employer message, connect your experience to Appropriate Technology Systems Ltd and the role in Lagos.
- Add concrete examples related to security, call_center, internship, ideally with measurable outcomes or clear responsibilities.
- Follow the instructions from Jobberman Nigeria; avoid sending documents to unofficial contacts or copied links.
- Confirm the deadline, interview location and employer contact before sharing personal documents.
Source and safety check
- Jobberman Nigeria
- Original source link available
- Application method is clear
- Deadline not specified
- No major risk signal was detected in the captured text.
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Interview preparation
- What experience makes you a strong fit for this API Developer/IT Officer role in security, call_center?
- How have you handled responsibilities similar to those in this job post?
- Are you available to work in Lagos under the listed contract or schedule?
- Prepare examples with clear responsibilities, tools used and measurable outcomes.
- Review the source and research Appropriate Technology Systems Ltd before the interview.
Ask what the first priorities will be in the role and how success will be measured.
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Original source description
A
API Developer/IT Officer
Appropriate Technology Systems Ltd
Software & Data
4 days ago
Easy apply
New
Featured
Lagos
Full Time
Recruitment
NGN
600,000 - 900,000
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Job summary
A reputable and growing microfinance bank committed to delivering innovative financial solutions and exceptional customer service is seeking suitably qualified, experienced,
and highly motivated professionals to fill this position
Min Qualification:
Degree
Experience Level:
Mid level
Experience Length:
5 years
Language Requirement:
English
Working Hours:
Full Time - 8 to 5
Applicant Location:
Lagos, Nigeria
Job descriptions & requirements
Key Accountabilities
- API Gateway & Middleware Co-Management:
- Take direct administrative and configuration access in staging/production environments for our API Gateways (e.g., Kong, Apigee, WSO2, or AWS API Gateway).
- Design and deploy custom gateway routing rules, rate-limiting policies, response transformation scripts, and payload caching layers to shield client applications from slow vendor backend endpoints.
- Enforce modern API security mechanisms across all gateway endpoints, including OAuth2, Mutual TLS (mTLS), HMAC signature verification, JSON Web Tokens (JWT), and rate-limiting.
- Interface Standardized Specs & Mock Engine Creation:
- Author clear, comprehensive OpenAPI 3.0 / Swagger specifications, gRPC proto files, and JSON/XML schema definitions for all proposed digital features prior to vendor implementation.
- Build, host, and maintain high-fidelity mock servers and Postman API collections so internal front-end teams (iOS, Android, Web, POS) can design
- UI/UX features concurrently without waiting for backend vendor completion.
- Vendor Delivery Acceleration & Technical Oversight:
- Review technical design documents, database query structures, and API architecture proposed by the MSP; identify potential bottlenecks, race conditions, or unhandled exception flows before code is deployed.
- Execute rigorous Technical Acceptance Testing (TAT) on all API releases delivered by the vendor.
- Perform deep-dive root cause analysis on API failures using network traces, HTTP status codes, raw payload analysis, and Wireshark/Postman debugging tools to prove whether delays/failures stem from vendor resource understaffing or infrastructure bugs.
- Payment Switch & Third-Party Integrations:
- Directly manage technical sandboxing and production certification integrations for NIBSS payment rails, switching partners (Interswitch, Unified Payments), card schemes (Verve, Mastercard, Visa), and telecom USSD platforms.
- Design robust webhook processing infrastructure with automated retry queues (exponential backoff) to handle asynchronous payment status notifications without losing transaction state.
Requirements
- Bachelor’s or Master’s Degree in Computer Science, Computer Engineering, Software Engineering, or a related technical field.
- Minimum of 5+ years of progressive hands-on software engineering experience, with at least 3 years specialised in API integrations, middleware architecture, or technical delivery within a CBN-regulated bank, payment service bank (PSB), payment switch, or high-volume fintech operator.
- Deep, hands-on experience configuring and managing enterprise API gateways (Kong, Apigee, WSO2, or AWS API Gateway).
- Expert-level fluency in RESTful APIs, gRPC, WebSockets, SOAP/XML, ISO 8583, ISO 20022, and payment webhook architectures.
- Capability to write production-grade integration wrappers and middleware scripts in at least one modern backend language (Go, Java/Spring Boot, Node.js/TypeScript, or Python).
- Observability Tools: Advanced mastery of Postman/Newman automation, Swagger Editor, Charles Proxy, Wireshark, Datadog, or ELK Stack for API performance analysis
- .
- General Requirements:
- Strong integrity, professionalism, and commitment to excellence.
- Excellent written and verbal communication skills.
- Ability to work effectively in a fast-paced environment.
- Banking or microfinance experience will be an added advantage.
- Remuneration: NGN
- 6 Million – 8 Million Per Annum
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