Overview UST is a multinational company based in North America, a certified Top Employer and Great Place to Work, with over 35,000 employees across more than 35 countries. We are leaders in digital technology services, delivering large‑scale technological solutions to major companies.

Role Summary Senior iOS Software Engineer. Passionate about building high‑quality mobile experiences at scale and contributing to impactful digital products. High English level is required.

Key Responsibilities

Contribute to the development of fully native mobile applications, ensuring a seamless and engaging user experience

Collaborate with the Engineering Manager and team to evaluate technical decisions, risks, and architecture

Act as a technical evangelist, mentoring and coaching junior engineers

Develop well‑structured, scalable, and well‑tested code for iOS apps and backend orchestration services

Drive innovation within the team and contribute to technical initiatives

Work closely with senior engineers across teams to maintain a compelling mobile offering

Promote engineering best practices including quality, testing, and collaboration

Mandatory Requirements

Proven experience delivering high‑quality native iOS applications at scale

Strong programming skills in Swift and deep knowledge of the iOS ecosystem

Expertise with modern iOS development tools: Git, Xcode, XCTest, XCUITest, Jenkins

Solid understanding of iOS platform capabilities in enterprise environments

Experience mentoring or guiding junior engineers





Strong communication skills and ability to collaborate across teams

Passion for quality, applying practices such as Pair Programming, TDD, and BDD

Interest in cloud technologies, especially AWS

English C1

Nice to Have

Hands‑on experience with AWS/cloud environments

Experience working in complex or regulated environments

Strong problem‑solving mindset focused on real‑world challenges

Curiosity and willingness to learn new technologies, tools, and frameworks

Benefits

23 days of Annual Leave plus the 24th and 31st of December as discretionary days

Numerous benefits (Health Care Plan, Internet Connectivity, Life and Accident Insurances)

Retribution Adaptable Program: Meals, Kinder Garden, Transport, online English lessons, Health Care Plan, etc.

Free access to several training platforms

Professional stability and career plans

Referral compensation program

Option to pick between 12 or 14 payments along the year

Real Work‑Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summer)

UST Club Platform discounts and gym access discounts

Equal Opportunity Statement UST is committed to equal opportunities in our selection processes and does not discriminate based on race, gender, disability, age, religion, sexual orientation or nationality. We have a special commitment to disability & inclusion, so we are interested in hiring people with disability certificates.

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📌 Senior iOS Developer (Remote from Spain) (Madrid)
🏢 Ust
📍 Madrid