UX Research–Led UI Designer

Optimum Solutions Pte Ltd; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

Optimum Solutions Pte Ltd is seeking a Designer with strong user research skills to lead end-to-end design, from understanding user needs to prototyping, testing and implementation. You will plan and conduct user research, translate findings into journeys and wireframes, and collaborate with product teams to balance user needs with business constraints.

The role requires 3–5 years of UX/UI design experience, a portfolio showing research-driven design, and proficiency in usability testing,

Qualifications

• 3–5 years of professional UX/UI or product design experience with hands-on research.
• A portfolio showing end-to-end design from research to implemented solutions.
• Proficiency in user research methods, usability testing, interaction design, prototyping, and high-fidelity UI.
• Ability to synthesize findings into actionable insights and communicate decisions clearly.
• Experience in Agile, multidisciplinary teams, and stakeholder management.
• Empathy and user-centric mindset; ability to challenge assumptions constructively.

Responsibilities

• Plan and conduct user research, including interviews, contextual inquiry, concept testing, and usability testing.
• Translate research findings into user journeys, task flows, wireframes, prototypes, and high-fidelity UI designs.
• Design intuitive, accessible interfaces that simplify complex workflows and improve user experiences.
• Collaborate with product teams and stakeholders to define problems, validate solutions, and balance user needs with business and technical constraints.
• Work closely with engineers to support implementation, review delivered features, and resolve usability or visual design issues.
• Evaluate released features using user feedback, research, and product data to identify further improvements.
• Facilitate workshops and discussions to build shared understanding and guide design decisions.

Skills

User research

Usability testing

Prototyping

Interaction design

High-fidelity UI design

Portfolio

Communication

Agile

Stakeholder management

Collaboration

Facilitation

Empathy

Job description

Optimum Solutions Pte Ltd is seeking a Designer with strong user research skills to lead end-to-end design, from understanding user needs to prototyping, testing and implementation. You will plan and conduct user research, translate findings into journeys and wireframes, and collaborate with product teams to balance user needs with business constraints.

The role requires 3–5 years of UX/UI design experience, a portfolio showing research-driven design, and proficiency in usability testing,