About the role

N-iX is looking for a Full-Stack Engineer (Node.js+React) for a London-based fintech startup building a digital marketplace for the secondary private credit market. The platform enables institutional investors to buy and sell credit positions, co-invest in large deals, access liquidity before loan maturity, and receive AI-generated deal tear sheets and fair asset valuations. You’ll join a three-person full-stack engineering team covering backend (distributed systems, multi-threading), frontend (UX/UI), and DevOps (AWS architecture, observability, CI/CD).

Requirements

5+ years of commercial experience as a Full-Stack Developer.
Strong expertise in JavaScript/TypeScript with proven experience building web applications using React, Next.js, Styled Components.
Solid backend experience with Node.js, databases (MariaDB/MySQL, DynamoDB, MSSQL, ElasticSearch), and GraphQL.
Knowledge of AWS (Lambda) and microservices architecture.
Hands-on involvement in CI/CD, QA, and testing activities.
Upper-Intermediate+ English proficiency.
Comfortable working independently and engaging directly with stakeholders to clarify requirements.

Nice-to-Have

Experience in fintech or credit/loan-related platforms.
Familiarity with observability tools (Datadog, Prometheus).
Exposure to distributed systems and multi-threading.
Strong understanding of performance and scalability challenges in financial systems.

Key Responsibilities

Deliver high-quality features covering both functional and non-functional requirements (security, performance, scalability).
Participate in technical discussions and own key technical decisions, ensuring alignment with best practices.
Design and implement end-to-end features across frontend and backend in a fast-paced environment.
Communicate effectively with both technical and non-technical stakeholders on a daily basis.
Refine requirements, manage dependencies, and contribute to backlog prioritization and planning.
Engage independently with stakeholders to translate business needs into working solutions.
Contribute to platform improvements and technical strategy.
Drive engineering quality by reviewing code, contributing to testing, CI/CD, and QA processes.

We offer*:

Flexible working format - remote, office-based or flexible
A competitive salary and good compensation package
Personalized career growth
Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
Active tech communities with regular knowledge sharing
Education reimbursement
Memorable anniversary presents
Corporate events and team buildings
Other location-specific benefits

*not applicable for freelancers

Skills & Tags

react node java typescript javascript go aws ai

Aplyr's read

Nix is pioneering sustainable water transportation, attracting tech-savvy professionals passionate about eco-friendly innovation and community engagement.
Synthesized from recent postings & public sources

What's promising

•Nix is at the forefront of sustainable water transportation solutions.
•The company emphasizes eco-friendly practices and community involvement.
•Nix offers roles focusing on AI and cutting-edge technology.

What to watch

•Limited public information about the company's financial health.
•High demand for specific language skills may limit applicant pool.
•Potentially high competition for technical roles in AI and software engineering.

Why nix

•Nix uniquely combines environmental services with advanced technology roles.
•The company promotes active community engagement alongside its business goals.
•Nix's focus on eco-friendly water transport sets it apart in the tech industry.

Aplyr’s read is generated by AI from public sources. Was it useful?