Time zones: EST (UTC -5), SBT (UTC +11), GMT (UTC +0), MSK (UTC +3), CEST (UTC +2), BST (UTC +1), JST (UTC +9), CST (UTC +8), WIB (UTC +7), MMT (UTC +6:30), BST (UTC +6), NPT (UTC +5:45), IST (UTC +5:30), UZT (UTC +5), IRDT (UTC +4:30), GST (UTC +4)Lock23, Position DescriptionSenior Full-Stack Engineer: Next.js, Postgresql, SupabaseContract: Full time contract. Hiring will include a 3-month trial. You have to be registered as self-employed in your jurisdiction and do your own taxes. Compensation: Competitive salary and benefits ( 30k - 48k USD ).Where: The position is location independent and 100% remote, but requires 2 hours of daily availability for calls during UTC+7 business hours (Thailand) and 4h of availability for calls with UTC+1 business hours (Portugal)Overview:Lock23 is 3 year old start-up which seeks to solve an ubiquitous Scope 3 accounting issue for the large supply chains of this world. It is our aim to help large brands to effectively account and mitigate their energy footprint across their vast supply chains. If you want to learn about the energy markets and renewable energy certificates (RECs), are interested in the environment and solving complex problems but also want to work in a dynamic small team this position is for you.As Senior Full-Stack engineer you would be leading the design and implementation of the entire application. Data security is the first priority and not an afterthought. This is a senior role in which you will not be micro managed but work in tandem with one other developer.We offer competitive rates and considerable growth potential, flexible working hours/location, and the opportunity to become an expert in a major sustainability field. Expect rewarding work, on a team that enjoys doing it. The Role and Responsibilities:The Full stack engineer will focus on the following areas of work:(i) Designing, Implementation and Security: Much of your work will centre around designing implementing and maintaining our code base. You will take executive decisions and write highly secure, well documented and scalable code with best practises in mind. As we are are handling extremely sensitive supply chain data you need to in plain English - know what you are doing follow best practises laid out by OWASP.(ii) Third party API-integration: You are skilled in building API bridges and know how to integrate 3rd party data sources safely into an application.(iii) Exploring frontier markets. Lock23 is constantly involving and growing. We are interested in solving more and more highly complex supply chain problems in the future and we need your ability to conceptualise IT solutions to facilitate this. You should therefore have an interest to read technical documents about the REC market to thoroughly understand and discover problems that need solving.Minimum Qualifications: Academic degree in IT 5+ years of work experience Experience building and maintaining a complex full-stack application. You have worked on a large scale application before and know the ins and out of scaling an application to 10000+ daily users. Experience with third party API integration implementation. You can write unit tests, keep up to date on security and bring us on track to pass security audits such as SOC2 You have experience with tools such as ZAP or Burpsuite to look for vulnerabilities is the webapp Experience with the core stack (Postgres, Next.js, Supabase, Docker, Typescript, React) or similar technologies is essential Passport, visa, and/or applicable documents to allow you to work from where you are.Most Important Skills: You are proactive, and seek to identify and solve problems. We are a small team of highly independent people that does not want to micromanage each other. If you see a problem or you have an idea you can assume that you are responsible to solve it. Fast, self-guided learner. Web development and the REC markets are constantly evolving. This means that everyone on the team is learning and sharing, all the time. We feel better about someone who is excited to learn, adapt, and share than someone who knows all. Honest, dependable, and direct. In short, we need to be able to trust each other. You will be expected to handle confidential information with the utmost care and to deliver work on tight deadlines. This also means we will value your opinion highly, and expect you to be forthcoming when you think things can or should be done differently.Nice to Have: An understanding of corporate sustainability and how it is implemented. This may include familiarity with RECs, carbon credits, greenhouse gas accounting, or electricity markets Experience in data and statistical analysis, and/or new digital tools such as blockchain, artificial intelligence, and machine learning.How to Apply:Please send the following materials, in PDF format, to [emailprotected](i) Cover Letter describing your interest and qualifications for the position.(ii) Resume or CV that provides a clear overview of your recent work experience, and anyrelevant education/internships/research. This should be no longer than 3 pages.(iii) Supporting materials are highly welcomed. Please send us a link to your git-repository or previous work if possible.(iv) Shortlisted applicants will be invited to an interview, and to share references from previous employers. A second round of interviews may be requested.Notes to Applicants:Welcome to try. We understand that the perfect human might not be perfect on paper. If you know yourea great fit for the job, but perhaps lack some relevant work or educational experience, we encourage youto apply anyway. In doing so, please be transparent in your cover letterindicating where you might needextra help, and how your positive traits will help balance out anything you feel is missing on your CV.Equal opportunity. Lock23 is an equal opportunity employer. Your age, race, ethnicity, religion, gender,sexual preferences, political views, and other personal attributes will not impact our hiring process, norwill they impact how youre treated as a member of the team. We expect all staff to treat each other, andany clients they interact with, with the same level of respect and tolerance.