Docker Jobs in Johannesburg.
All active Docker roles based in Johannesburg.
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Meet Ozow
Ozow is a leading fintech company that's redefining digital payments in South Africa and beyond. We're dedicated to making payments more accessible, secure, and convenient for both businesses and consumers. As a fast-growing player in the financial technology sector, Ozow fosters a culture of innovation, diversity, and inclusivity. We believe in pushing the boundaries of what's possible and are committed to making a positive impact on the world through our payment solutions.
More about this Ozow fantastic position
Ozow is seeking a Software Engineer to join our talented development team. As a Software Engineer, you'll play a crucial role in designing, developing, and maintaining innovative solutions that power our digital payment platforms. This is an opportunity to work on cutting-edge technology, solve complex challenges, and contribute to the growth of the fintech industry.
Your role and responsibilities
Software Development
- Collaborate with cross-functional teams to design, develop, and maintain software solutions that meet high-quality standards and business requirements.
Coding
- Write clean, efficient, and maintainable code while following best practices and coding standards.
Technical Problem Solving
- Analyze and troubleshoot complex technical issues and implement effective solutions.
System Architecture
- Contribute to the design and architecture of software systems, ensuring scalability, security, and performance.
Code Reviews
- Participate in code reviews to ensure code quality and knowledge sharing within the team.
Agile Development
- Work in an Agile environment, participating in sprint planning, stand-ups, and retrospectives.
Documentation
- Create and maintain technical documentation for software and processes.
Mentoring
- Provide guidance and mentorship to junior team members as needed.
You are an ideal candidate if you have
- At least 4+ years of work-related experience as a Software Engineer or Software Developer
- Ideally have an IT Diploma or Degree
- Ability to develop software in .NET 8 C#, JavaScript, ReactJs, HTML, CSS and other programming languages (polyglots preferred)
- Excellent knowledge of Postgres, Mssql technologies (EF, NHibernate)
- Knowledge of NoSQL databases such as Redis, Riak, MongoDB, and others.
- Experience developing web applications, with a good understanding of how the web works
- Proven experience in high-scale applications and an understanding of the practices and approaches that are employed in scaling applications beneficial.
- Experience with unit testing, knowledge of applying test-driven development beneficial
- Understanding DevOps principals and how to apply them practically beneficial.
- Experience in cloud services preferred – AWS, Azure.
- Experience with containerisation (Docker/Kubernetes, TeamCity, Octopus Deploy) highly beneficial.
- Experience working with agile methodologies – a true believer
Your skills and competencies
- You eagerly embrace change, absorb cross-functional skills, and connect ideas across disciplines to drive fresh thinking and innovation.
- Ability to initiate, develop, maintain and leverage outstanding relationships to influence a wide network, both inside and outside the company.
- A trailblazer who steps up, takes charge, and creates meaningful impact—those driven by performance and purpose to lead from the front and make a real difference every day.
- You thrive in collaboration, embrace inclusion, and bring a genuine curiosity for global cultures—valuing collective success over individual credit.
- Demonstrate strategic foresight, sound judgement, and the ability to make confident decisions under uncertainty, always working toward the best possible outcomes.
- You challenge norms, champion innovation, and constantly seek growth—for themselves, their team, and the solutions they build.
- You are a decisive doer—those who take initiative, follow through with confidence, and ensure results through courageous, hands-on leadership.
- We value optimism, agility, and the strength to persevere under pressure—balancing performance with positivity, even in challenging environments.
- You are driven, proactive individuals who take ownership, face challenges with grit, and consistently push for excellence—not just as participants, but as catalysts for success.
Interview process
During the interview process you will meet with the People team, the hiring manager, and relevant CSuite. Be prepared to complete a technical assessment that will showcase your skills.
In office perks
- Healthy breakfast, lunches and snacks
- Monthly team connects
- On-site Barista
Perks for South African based employees
- Medical aid subsidy
- Group Risk Insurance
- Generous paid annual leave
- Birthday leave
- Learning and Development opportunities
- Mentorship programme
- Quarterly team building
- Community initiatives
- Access to cutting edge technology - Ozow Tech Stack
Our Employee Value Proposition
Join Ozow and become part of an elite force that challenges the ordinary and achieves the extraordinary. If you're driven to make an impact, embrace challenges, and seek unparalleled opportunities for growth, your journey starts here.
Compliance
As a fintech company, we prioritize data security, confidentiality, regulatory and compliance. Due to the sensitive nature of our work, we require individuals with a high level of integrity and trustworthiness to ensure adherence to financial regulations and industry standards. Given the sensitive nature of our work, all employees are expected to demonstrate professionalism, accountability, and a commitment to ethical conduct in line with financial regulations and industry standards
Ready to be exceptional? Apply now!
Keen to know more?
Interested in joining our rocket ship?
To find out more about life at Ozow, head over to our Careers Page here!
Ready to apply?
Apply to Ozow
Software Engineer, Data Infrastructure & Acquisition - Johannesburg, South Africa
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The mission of Speechify is to make sure that reading is never a barrier to learning.
Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.
Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.
Overview
We're looking to hire for our Data side of our AI team at Speechify. This role is responsible for all aspects of data collection to support our model training operations. We are able to build high-quality datasets at petabyte-scale and low cost through a tight integration of infrastructure, engineering, and research work. We are looking for a skilled Software Engineer to join us.
What You’ll Do
- Be scrappy to find new sources of audio data and bring it into our ingestion pipeline
- Operate and extend the cloud infrastructure for our ingestion pipeline, currently running on GCP and managed with Terraform.
- Collaborate closely with our Scientists to shift the cost/throughput/quality frontier, delivering richer data at bigger scale and lower cost to power our next-generation models.
- Collaborate with others on the AI Team and Speechify Leadership to craft the AI Team’s dataset roadmap to power Speechify’s next-generation consumer and enterprise products.
An Ideal Candidate Should Have
- BS/MS/PhD in Computer Science or a related field.
- 5+ years of industry experience in software development.
- Proficiency with bash/Python scripting in Linux environments
- Proficiency in Docker and Infrastructure-as-Code concepts and professional experience with at least one major Cloud Provider (we use GCP)
- Experience with web crawlers, large-scale data processing workflows is a plus
- Ability to handle multiple tasks and adapt to changing priorities.
- Strong communication skills, both written and verbal.
What we offer
- A fast-growing environment where you can help shape the company and product.
- An entrepreneurial-minded team that supports risk, intuition, and hustle.
- A hands-off management approach so you can focus and do your best work.
- An opportunity to make a big impact in a transformative industry.
- Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
- Opportunity to work on a life-changing product that millions of people use.
- Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
- Work in one of the fastest-growing sectors of tech, the intersection of artificial intelligence and audio.
Think you’re a good fit for this job?
Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.
Not looking but know someone who would make a great fit?
Refer them!
Speechify is committed to a diverse and inclusive workplace.
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.
Ready to apply?
Apply to Speechify
About us:
Luno is the crypto investment app you can rely on, enabling you to buy, store and explore crypto securely. We’re committed to putting the power of cryptocurrency in everyone's hands sensibly and responsibly.
Since 2013, we’ve helped millions of people around the world invest safely in crypto. We do this by cutting through the hype and supporting customers at every step of the way. All products and cryptocurrencies on our platform must first meet stringent legal, risk and technical security standards.
Transparency is key for us. Luno stores all crypto on a 1:1 basis and we have rigorous processes in place so you can be confident your investment is secure. We’re available in more than 40 countries around the world and we work closely with respective regulators in all of these markets to be fully compliant, as we believe this is the best way to help everyone, everywhere, invest safely.
The role in a nutshell:
We're building teams to help us succeed in our mission to upgrade the world to a better financial system. As an intermediate engineer, you’ll be joining a group of highly motivated software engineers who you’ll work collaboratively with across our pods.
As a fast-growing company with offices around the world, you’ll immediately see how your contributions directly impact both our internal users and client experience. Many of the problems we are solving result in trail blazing solutions which can’t be found on Stack Overflow; so we’re looking for engineers who flourish working in a complex domain.
Your mission will be:
- Build distributed microservices that are accessed by 10m customers from across the globe.
- Design, build and maintain advanced applications services.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Write testable, maintainable code for robustness and reliability.
- Work on bug fixing and improving application performance.
- Write code that directly affects users, the company and the Bitcoin ecosystem.
A little about you:
- Background in computer science in areas such as algorithms, data structures, and software design.
- Proven experience leading development efforts and guiding engineering teams through end-to-end project delivery.
- Extensive programming experience in Backend based technologies. Go(lang) is preferable.
- A continuous improvement mindset.
- BSc/MSc/PhD in computer science or other technical discipline, or equivalent working experience.
- To be friendly, transparent, articulate and driven to succeed.
Don’t be put off if you don’t tick all of the boxes – they’re a guide based on what we’d love to see
What stack we work on:
- Kotlin, Swift & Angular
- Go(lang), gRPC
- Kubernetes (EKS), Docker
- CloudFlare, CloudFront, nginx
- MySQL (RDS), Redis (ElastiCache), etc
- Prometheus, Grafana, CloudWatch, Jenkins
Life at Luno:
- Remote but reachable work policy gives you the freedom to choose between working from home or the office.
- Plus the option to buy and sell up to 5 days leave
- Improve body and mind, with excellent private medical insurance
- Access to Learnably and our additional learning platforms for your personal and professional development
- 6 months primary care-giver leave
- Paw-ternity leave for your furry friend
- Annual Inspiration Day in addition to your annual leave which increases based on your length of service!
- A collaborative, friendly work community, with regular social events and virtual cooking, dancing, drawing and house planting classes hosted by our Lunauts
- 0 fees up to a certain amount with Luno from the day you start.*
*Offer only available on Luno Instant Buy, not Luno Exchange
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Ready to apply?
Apply to Luno
About us:
Luno is the crypto investment app you can rely on, enabling you to buy, store and explore crypto securely. We’re committed to putting the power of cryptocurrency in everyone's hands sensibly and responsibly.
Since 2013, we’ve helped millions of people around the world invest safely in crypto. We do this by cutting through the hype and supporting customers at every step of the way. All products and cryptocurrencies on our platform must first meet stringent legal, risk and technical security standards.
Transparency is key for us. Luno stores all crypto on a 1:1 basis and we have rigorous processes in place so you can be confident your investment is secure. We’re available in more than 40 countries around the world and we work closely with respective regulators in all of these markets to be fully compliant, as we believe this is the best way to help everyone, everywhere, invest safely.
The role in a nutshell:
As a Quantitative Software Engineer (Quant Dev) at Luno, you will design, build, and operate the high-performance systems and mathematical models that underpin our trading, pricing, and market-making capabilities.
You will sit at the intersection of quantitative research and production engineering, translating quantitative ideas, models, and strategies into robust, low-latency, production-grade systems that operate reliably in a 24/7 global market. Your work will directly impact liquidity, pricing quality, risk management, and customer outcomes.
Your mission will be:
Quantitative Strategy Engineering
- Partner closely with quantitative researchers to implement, optimise, and productionise trading and pricing models.
- Translate mathematical models, research prototypes, and proofs-of-concept into scalable, reliable production systems.
- Validate assumptions, edge cases, and numerical stability when moving models from research to live environments.
Trading & Market Systems
- Build and evolve market-making, pricing, and execution logic across crypto markets.
- Develop automated internal transfer, rebalancing, and hedging mechanisms.
- Configuration: Add and refine console parameters to optimise for volume, spread, profit, or rebalancing.
Performance, Quality & Risk
- Profile, benchmark, and optimise code paths critical to trading performance.
- Implement regression testing, simulation, and backtesting frameworks to ensure correctness and risk controls.
- Ensure strategies and systems meet governance, auditability, and compliance requirements.
Ownership & Delivery
- Own initiatives end-to-end: design, implementation, testing, deployment, and monitoring.
- Align technical delivery with OKRs and broader Treasury / Trading objectives.
- Work closely with Product and Engineering Managers to shape realistic priorities and timelines.
Collaboration & Coaching
- Act as a bridge between quantitative research and engineering teams.
- Mentor engineers on quantitative systems, numerical correctness, and best practices in trading system design.
- Contribute to raising the overall bar for engineering excellence within the team.
A little about you
Experience
- Proven experience as a software engineer, with exposure to or strong interest in quantitative finance, trading systems, or financial infrastructure.
- Experience working with trading models, pricing systems, or data-driven decision engines is a strong advantage.
Technical Strength
- Strong programming skills, particularly in Python, with solid foundations in data structures, algorithms, and system design.
- Experience writing production-grade, performance-sensitive systems.
- Familiarity with numerical computing, modelling, or statistical techniques is beneficial.
Quantitative Mindset
- Comfortable working with mathematical models and translating them into software.
- Able to reason about trade-offs between model sophistication, performance, and operational risk.
Don’t be put off if you don’t tick all of the boxes – they’re a guide based on what we’d love to see
What stack we work on:
- Kotlin, Swift & Angular
- Go(lang), gRPC
- Kubernetes (EKS), Docker
- CloudFlare, CloudFront, nginx
- MySQL (RDS), Redis (ElastiCache), etc
- Prometheus, Grafana, CloudWatch, Jenkins
Life at Luno:
- Remote but reachable work policy gives you the freedom to choose between working from home or the office.
- Plus the option to buy and sell up to 5 days leave
- Improve body and mind, with excellent private medical insurance
- Access to Learnably and our additional learning platforms for your personal and professional development
- 6 months primary care-giver leave
- Paw-ternity leave for your furry friend
- Annual Inspiration Day in addition to your annual leave which increases based on your length of service!
- A collaborative, friendly work community, with regular social events.
- 0 fees up to a certain amount with Luno from the day you start.*
*Offer only available on Luno Instant Buy, not Luno Exchange
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
#LI-DNI
Ready to apply?
Apply to Luno